So, here's the thing... Well, first off, I was (and am no longer, but was) the director of engineering at a major bow manufacturer a few years ago. To meet our spec, we would design our bows to 100 dry fires. The goal is and always will be strength vs weight of the bow components. So, we would dry fire and see what broke, cracked, yielded, bent whatever and then "beef up" that component and dry fire again etc. So, once we got to where we could 100 times out of 100, get NO breaks, cracks, yields, bends, in anything with dryfires, that would be our final design for the year/series etc. Strings break, risers bend, limb pockets twist, limbs crack and delaminate (a lot), etc. Another thing is that we would test at IBO standard of 80lbs of draw weight and 30 inches of draw. That is the criteria that we would design our bows to. You can, and we did, build some custom bows for some really tall archers, ie 36-38" draw length, and some Africa hunts we would design bows to 120lbs of draw weight. These were custom built monsters. And, of course we would "play around" in the shop with these prototypes basicially, and when you get really long draw lengths, you can get some really good speed. But, the goal was to get a 5 grain arrow at 30inches of draw to as fast as possible of course w our speed bows. 5grain/lb arrow is the IBO standard, meaning at 80lbs of draw weight, we would shoot 400gr arrows. The biggest limitation, and it's the one that EVERY manufacturer runs into is the limbs. There are VERY FEW limb manufacturers, like VERY FEW, like... one, lol. There may be more now, but I doubt it. Anyway, basically the manufacturer would send us the spec sheet on all of their materials. We would work with the spec sheet and try and design the max load per the geometry for different matrices (layers) of materials that we had available. There is only so much you can do, before you load the limbs too much and they basically just crack and delaminate in catastrophic failure. So, again we would design and push the geometry to the max tensile (top of the limb) and compression (bottom of the limb) loads possible. Then once we designed the limbs and the geometry and the cam loading profile, we would test on the dry fire machine. 9 times out of 10 the manufacturer would be very, lets say lenient, on his spec sheet, and we would delam almost always from our first design. So then we would back off on our limb geometry until we could get the 100 dryfires wo LIMB failure. Then would would check everything else. Another common failure mode was the cam axle. It would bend, and of course we want the lightest bows possible, so then the limb pockets would twist as well. So, then we would do that for every design for the year, and we would shoot 10 shots with a "normal" arrow setup (3, 3 inch fletches, proper FOC etc), and send all of that data to the marketing group. Then the marketing group would have us cut off the fletches, use the pointiest field tips, use our machine to draw and shoot 10 shots (rather than hand held releasing) to get their speed numbers for the season, and take the fastest ONE (Usually about 10-15fps faster than hand held, normal arrow) shot and use that as their number for the marketing materials. No peep, no nock, bare string, unless we could play around with some crimp on nocks and different placement on the strings to get faster numbers. Sometimes we could, sometimes we couldn't, there would be a lot of trial and error. But, anyway, the moral of the story is, don't do what these guys did. Anything less than a 5grain arrow, and its only a matter of time before your bow explodes. Based upon what these guys were doing, I would say that the string/cables would be their first failure. They are not designed to be twisted that much. Better to just use shorter cables to begin with. The next failure would probably be the a tension crack on the top layer of the limb glass. As far as cable twisting and all of that, when you push things to the limit like this, sometimes its best to just get a custom cable made with fewer strands. What you want is a little "give" in the cable/string system. With a higher number of strands, its really a hard "shock" on the entire assembly upon release. What you want is just a little "give" to help reduce the shock once the bow becomes unloaded upon release. The limbs and the cam and the draw length are all a "system." You can (in essence) make the limbs thicker to get a higher poundage ( our African bows), and you can lengthen the limbs when you add draw length etc. So this "system" is designed to put the maximum load on the limbs at every point during the draw cycle, and change any one thing, ie cable length (cable twists), and it messes up the whole system. The next thing is the spine on the arrows. We would use high speed photography and see actually how far the arrows "bowed/bent" upon release. And, the "effective" spine is very dependent on the weight of the tip. So when these guys lightened the tip (75gr) they actually stiffened the effective spine of the arrow system. You can go down to a 4gr arrow, usually, with a light tip, and get some really amazing speed. In this case when these guys were shooting 95lbs, that would equate to about a 380 grain arrow. And, you SHOULD be safe for about 200-300 (maybe as many as 500) shots, depending upon the bow manufacturers own internal design criteria. But, anything less than 4gr and you are really, really pushing it, and it's just a matter of time. So, wear safety glasses, and a heavy coat, because that thing WILL explode on you. Also, these guys, even at what they were doing, I would completely disassemble the bow, look at the axles, spin them and see that they have ZERO wobble, and also the cam bearings may "hog out" and become a little egg shaped. So, just be careful out there guys.
If you're referring to Bowtech - Thanks for the research.... My RPM360 has been doing awesome since new in 2015 & the local Hoyt & Mathews dealers still can't believe how well it shoots & how fast it is... But that gawd awful factory plastic handle piece - That had to go !
Just curious mate. I dryfired my bow this year 🤦🏻. The only damage was the cams. They bent slightly and collapsed on themselves. The bow didn’t even derail. But was definitely unshootable. Your comment of 100 dry fires seems amazingly excessive given my experience. It was a flagship bow and not some cheapie. Do you know if most bow manufacturers do this type of testing? I paid to repair mine.
Two tips for the chronograph. It works by checking the time between 2 "shadows" cast by a projectile going over the top - the first at the first light gate and the second at the second light gate. So, 1: You are right about your indoor lights. They flicker 60 times a second so both gates see a shadow 60 times every second. It can't tell if that shadow is the projectile or not. The sunlight is constant so no confusing flicker. and 2: You are standing too close to it. The front gate is being triggered by the arrow but the string is still pushing it so it is still speeding up. You would see a higher and truer speed if you stood a couple feet further back from the chronograph, give the arrow time to be off the bow before you trigger the first light gate.
@@conradspear4241 aka common sense and understanding the operating process behind a device before use… pro tip read the manual the company spent ALOT of money producing it for a reason!
Another thing to consider that can throw off the speed by little bit is the angle the projectile is passing through the chronograph. The distance between the eyes is 1 foot, but at any angle other than parallel to the top, there is a cosine error and the distance travelled is slightly longer than 1 foot, so the time to pass from the two points is slightly longer, which will result in a slower than actual velocity. A 10 degree error will result in a 0.33% error which will show 295 ft/s on an arrow that's actually going 300 ft/s. The chrono will never show a velocity that is higher than the actual velocity, but it will show a slower one. This same phenomenon can happen with stationary police radar if the cruiser is too far off the highway. You will be clocked at a slower than actual speed.
Fun video! The set up was 3.3 grains per pound roughly in a short amount of time the limbs will give. IBO is 5 G per pound and was set a long time ago, a person would think tec advances would allow us to drop to maybe 4 to get greater speeds but ive pushed it and it doesent last long. Also, 44 years old now and use to shoot 83 lbs black night and a 80 lbs PSE for a short while and if you LOVE shooting now you will when your my age too...take care of them shoulders, no good repair surgery really available.
I built numerous bows in the 1980's that were in the 100-135# range. They were all round wheel bows back then. I was shooting 620-1200 grain arrows out of them. Still have the 135# bow, but can't pull it anymore. Fun to watch young guys with good shoulders mess around. I really enjoyed those days. Thanks for the video Chris!
I have a 1980s round wheel compound bow with metal cables that was a recent gift and has been sitting in a case for 3 decades. It looks so new I cleaned it up and have been learning to shoot with it. Its a Golden Eagle Hawk. Would you happen to know anything about it?
@@devinbreeding5412 nope but my 1980’s PSE Fireflight express with custom 6/65 wheels 42 ata @ 70lbs, 31inch draw and steel cables is still one of the smoothest draws I’ve ever shot, like butter to pull, felt more like a 60lb bow ;) I still miss that bow…
A 80s model Browning mirage cranked to 80lbs with max draw length and an overdraw is smoking fast. However probably half or better of those that were made the limbs shattered on them.
You need natural light for that chrono, the frequency of indoor lighting in Hz is basically flickering. Therefore the projectile is passing during an absence of full light, the sun doesnt flicker, it's a constant source.
At my local archery shop the owner has a bow with 120 pound draw weight and he gives prizes to people who can pull it back and he tested it and it was pushing 410 feet per second
Back in the 90’s I was in a shop that had a bow the company put the wrong deflection limbs on and was was supposed to be a 70lb peak was actually a 125lb peak. He hands me the bow and said I bet you can’t pull it back. I pulled it back and he told me I was only the second person to be able to do it. As I let it down it slipped off my fingers and I am expecting that I am going to have to but it. He said don’t worry about it.
LOL 😂 I pull effortlessly pull and 80 on bow and I’m a stick, you don’t need to have crazy muscles to pull a bow like this, if you practice every day to every other day, weekly crank your bow up 2.5 to 5 lbs. that’s what I did worked like a charm 👌
@@J_thelightskin 👍 what’s your bow setup I am always interested to what other people shoot, bows, arrows, release etc. I personally shoot a Hoyt Carbon RX3 with Easton FMJs with a four fletch, it’s worked great for me the past few years slayed my first 200 inch deer with it last year at 60 yards, The extra poundage, heavy arrow and four fletch really helped that day because there were 25 mph winds 😂
If you want more, try the Mathews Monster Safari, 85 pounds and 350 fps out of the box If you pump it at 95# and use a lighter, shorter arrow, May be you can up to 400fps
bob foulkrod used to have a signature series bow that went to 90lbs. it wasn't fast but it slung a heavy aluminum arrow with authority!!! i drew a custom high country set up for an African hunt that was 107lbs, but that was forever ago!!! man i am old LOL
@@ChrisFunktheFeralOne lol 33 years ago there was a local bow shop owner that his custom recurve was close to 120 pounds. lol at the time i could only safely shoot it twice.
@Tim brown that was for a huge dude wack'em & stack'em i think his forum name was he could draw that bow like most draw a 40lb it was nothing to him, been looking for the videos of it but haven't had much luck sadly, it was a PSE i think they called it "franken bow" or something like that
@@tbrown91241 yeah i've spoken them both on archerytalk and archeryaddix both very nice people, yes i know but i think they were among the first to use the term for the bow before and the bow you mentioned, it's been used for every bow ever since, wish i could find the videos of it that bow was a beast!
I'm old enough to remember when Beeman started making carbon arrows. My dad was a very avid bow hunter. I remember the day he picked up his new Beeman carbon hunters.After shooting Easton XX75's for years seeing the speed and penatration of those carbons was unbelievable. It was crazy the lazer beams that Onieda Eagle would shoot lol. Blast from the past. Back when overdraws for shorter faster arrows were a thing
That is crazy lol. I am so ready to get just one Mathews. I bought an Elite Ritual 33 to use until I get one. Much love Chris! I have learned all I know about archery from you.
Need to play with letoff adjustment , lower let off will give you higher speeds at same poundage. I also recall reading a article in the early 2000 about bows that did 400 FPS , but they did say they where specific built bows that would basically shoot a round and then needed to be rebuilt.
My understanding about bows shooting 400+ speeds like a crossbow (which arrows are much shorter as you know) is that the arrow is technology is not there to handle higher speeds like this?????? I would imagine, carbon with titanium mixed together could solve the problem but I'm only guessing??????
My tx5 at 61lb 27.5 draw 340 grain arrow 308 fps has blown through every deer I've launched it at with a grim reaper mechanical. Heavy arrow not needed on whitetails. Thanks for the videos and God bless you all
My lightest arrow is 292 grains including 85 grain broadhead, but it's 500 spine. I don't know what the lightest arrow would be that you could build for a high poundage bow.
@@mitchellperry8809 Well I wasn't gunning for the fastest 80lb draw bow, instead I was looking for an 80lb draw bow that I can actually draw and not break myself. Seriously 80lb feels like a punch in the chest every time I draw and that's with a fairly comfy draw cycle/valley/let off %. I love my bows but everyone has a limit. Oh and speed isn't the most important, true. Which is why I went with a fairly heavy arrow, to get as much efficiency out of that bow and still have decent speed.
Just wondering what that dollar store book shelf bracket his bow scale is mounted to is weight rated for?? Would be terrible if that thing let go, or if the screws stripped out of wall. Instant stained underwear moment!!
Just started archery last week and the guy that runs my club said I should start at 40lb and work up to 50 so the idea of pulling double that seems insane!!! 40 feels easy but I guess it’s good while I learn the technique. Nearly did the macho thing and bought a 60 but the guy that told me 40 used to shoot for Great Britain (Olympic bows) now he’s moved to compound and it seemed wise to bow down to his wisdom.
He does this all the time. It just shows how immature the guy is. He doesnt care about taking care of his equipment. He knows UV will send him more. He gets the stuff for free. I bet if the guy had to work a 50 hour a week job to be able to afford it, he'd think twice about throwing a $270 release. But hes just worried about being a youtube star. Id be embarrassed if i were UltraView. They make great products. Too bad they cant find someone with some sense to advertise for them.
@@nickmaloney5928 stfu let him enjoy what he does. You sound jealous that someone else has more than you. He doesn't need to treat his things like they are diamonds if he doesn't want to
I'm 57. I was watching this and thinking he is probably gonna regret this video for the rest of his life. It's stuff like this that buggers shoulders for life.
@@d1grizz I'm 30 and dont like even going past 65 pounds I can pull 70 but why 65 is plenty for me ? I killed deer with 50 pounds and with today's technology 60 pounds will get anything in the USA I want to have a healthy shoulder when I'm older i see alot of guys go into bow shop saying the same things like i dont know today my shoulder aint feeling it or similar things and kids my age or younger trying to pull as heavy as they can comfortably and be done after 20 shots people need to learn gracefulness stealth alertness puts meat in 5th he fridge not being a macho man pull 75 pounds after sitting for hours in cold conditions lol no thanks
@@mustang268 I learned my lesson about a month ago I went on a 3D shoot with a bow I bought off a friend, said it was around 70lbs. But compared to my other bow, the draw feels different. As the new one is more compact, so after walking in the heat all day and 40 targets later I felt it for a few days after that. Only shot It enough to sight it in and called it good, the day before. But when I got home I pulled the other bow out and was like wow there around the same draw weight but my older bow just felt much easier to pull back, and I went on a back to back 3D shoot with it and felt almost nothing, and was also 40 targets both days with practicing at the camp site both nights. Nothing wrong with lowering weight.
High Country Archery had a bow, the X-12 I think, that advertised 400 fps with their super light speed pro arrows. I never saw it in person but I remember reading about them.
Maybe you should have a look at some of the "English Longbows" some of them were up to 200lbs, mines quite small at 110lds, I came down from 150lbs due to illness, these things are Awesome for penetration, I practice with arrows made from thick walled Aluminium tube because I was breaking Hardwood arrows at 70 meters, they are very heavy & they hit like a train so I do destroy targets at an alarming rate, but I don't have anywhere with more distance of my own to practice at. Some journals say that a good bowman could have 6 arrows in the air at the same time, I have managed 3 with my 150lbs & which was on my best day, these guys had massive upper body strength, I wonder what they would make of us with our D shaped/Recurve/Compound bows today? I get the feeling they would think us Pussy's then beat us in every comparison & then bring us dinner from out of the forest just to rub it in. Yet another excellent post thank you.
ELBs made of Yew are the best. Mike Loades of the History Channel had a custom one built with a lot of reflex. It was about 80 pound. I’d like to find more made with the upper limps reflexed
I have a Bear Carnage shadow. At 80# I'm getting 355 fps. I'm not sure what my arrows are setup as. I have a 31 draw, but i use a setback drop away rest, so my arrows are cut at 30". Weird thing is, It's not violent or anything on release, the Carnage has the string stops. I backed it off to 70#'s just to make it last longer, it's still my favorite bow and I still use it.
But what about the PSE Full Throttle? That bow has a rating for 370 fps untuned. I guess if you would twist some cables and use a stupidly light arrow, you could brake the 400 fps.
There are quite a number of bows from history that are much stronger in some cases but these are Traditional bows or Compound bows like the Mongolian/Turkish/Scythian bows around 100 to 166lbs draw, it seems the English Longbow is the heaviest at 200+lbs but I don't know what speed their arrows were, that said they are usually quite heavy due to the materials used & the job they were built to do, I don't see anything nowadays that would punch through SteelPlate, but having fun with bows today is probably much easier.
serious question, i have the v3 31 but i hate the shallow valley "jumpy" at full draw, by adding the twist in the cables did that help at all compared to the factory cable twist, & valley?
Had something like that happen pulling 70 lbs (release failed and d-loop slipped out). I hit myself so hard I didn't realize my arrow flew off the string and landed 10 feet away and I dry fired it on the next shot. Not a good moment.
Haha..i know that feeling. Punched in my face one time, cause my release opend accidently. I put the opening to low for it. And here comes the trick...i never pulled again direktly towards the face. I pull slighltly more to the right side, and after its pulled, go back to my normal angle point. That helps ^^
Twisting the cable up shortens the cable. And twisting the cable compromises the Integrity of it. I have a PSC fireflight LC I bought in 2000, with Beman IC 340's with fixed bear broadheads and 70# it's arrow speed is 328 fps. I have taken a lot of deer with it some out to 40 yards. I retired it 3 years ago when I tore my bicep up at 60 years old. I believe draw weight has a lot to do with fps but cam designed is what really makes the speed.
For sure on most of them. Archery talk shot all the new bows from every major company and PSE was the only bow that came in at the speed advertised. Most of them were 18-20 FPS under advertised speed
They only seem inflated because you're not using a 350 gr arrow at 70 pounds with 30 pound draw. Anything less than that drops speed, they aren't lying to you. The mathews V3 is 342 ibo at those specs. I did mine today with a 365 gr arrow, 28" draw at 72 pounds and it went 320. That extra weight and shorter draw is where it went. A 465 gr arrow went 290. All they're doing is telling you the maximum speed at a certain spec and using a heavier arrow is better for hunting anyway.
@@WCGwkf I don’t believe they would lie. I know from my own experience it’s rare a bow shoots up to spec from the manufacturer ratings. I’d never shoot a ibo spec set up. But I do like to play with seeing what a bow does at those specs.
M new to a compound bow i used a traditional bow up to last year. Im planning on go to the range my sight in. My yard has 2 spots 15 yards and 19 yards ill sight in at 15 yards and then hit the range for 25 yards most of my hunting is limited to 15 to 30 yard shots. Im using an iglow bow with walmart350 sline with 100 grain 3 blade broadheads. So i have some things things to try
Forgot to tell of the one dude from Tucson AZ shooting an "experimental bow" at a 3D it completely blow threw a brand new McKenzie deer at 30 yards. After that shot they gave his entry fee back and told him Che can't show that bow. Never got any info on the bow since it was an experimental bow. Lol..
Get your hands on an APA King Cobra TF2. They are rated up to 370. The new DG version is rated to 365. My TF2 is throwing a 448 grain finished arrow downrange at 309... imagine the possibilities with just a 70# bow...
I immediately knew you needed sunlight when there was a problem that's how mine is, if you have it under straight fluorescent tubes it reads the frequency of the lights and throws numbers up. Can only use it during the day, but the chronograph needs a white background for best readings. A cloudy day would work too. They make indoor self lit chronographs that cost more. I chronod my V3 today and have 290 fps with a 465 gr arrow at 72 lb. Also tried a 360gr arrow and had it at 320
PSE full throttle, is still the Ibo King and not at that kind of poundage, the Mathews monster safari will send a heavier arrow faster than the full throttle
Try sticking one of those round under cabinet LED battery lights under each diffuser and your chronograph will become so much more reliable and you will be able to use it indoors !
I was actually wondering what those compound bows are capable of if one puts them through the stress you did . A really cool experiment I thought . I’ll leave the 100 pound stuff to my long bow though . A little safer lol Again cool experiment. Cheers
When I was going to school in Phoenix Az (1993) Randy Phillips (Archery headquarters) had a custom 100lb PSE made for him. Shot fast but was really LOUD!
@@PaceWC how much of that is factual and how much is just here say and people who simply don’t like their success, trying to bash them online? I’m generally curious not trying to argue
Can anyone answer this. I have a 45# max bow for my lady. when I adjusted her draw length, it drops to 35#. Can you safely twist the cables to get it back to 45# and safely use?
On chronographs the lighting is important. It use lite to make a shadow over the slots on top of the chrony to see the arrow or bullet pass over. As it passes it breaks the lite beam and it sees that and measure the break in the lite between the two slots and the light has to be almost 100% natural and unbroken. Inside lighting like any floresent light will mess with the chronograph.
Looks like you have a white ceiling in that shop, and as long as it's not really shiny, use one of those bright construction floodlights and aim it straight up at the ceiling above your chronograph. Make sure the ceiling area above the chrony is clear of anything, all white. The chrony needs a source of diffused light and the ceiling will provide that. Won't need the sunscreens. Use the sun screens outside on bright, cloudless days only. Best outdoor light for a chronograph are the full overcast days. No sunscreens needed.
Chris what's your opinion on the BowTech BTX-31? I picked one up and averaging 351-353fps with it set on the performance setting . It's a beast of a bow . You sacrifice the let off on the performance setting. Be cool see you review it even though it's a 2016 model.
Im shocked that shootimg 81 pounds at only 355 grains didnt damage the bow that is less that 5 grains per pound and 5 grains per pound is the minimum recommended weight
@@jeremywilson1299 I'm not sure if High Country Archery is still in business but they used to sell specific arrows with their bows that were ~3 grains per pound. The archery shop by me used to sell a bunch of them and they didn't have any more limb failures than any other company. At the time Bowtech was having a ton of limb failures with greater than 5 grains per pound. If the bow is well built, their shouldn't be an issue
Hey boss. You can use the chrono without the sun shade when in a darker area. Took me awhile to figure it out haha (I precision rifle shoot so it's a must that every shot counts on the chrono)
The light sensors on the chronograph are one foot apart and the chronograph simply sees the shadow of the bullet as it passes and clocks the amount of time it takes to travel 1 foot so you have 1 foot in parts of a second or a feet per second. The problem is when you have multiple white sources like multiple light bulbs inside of a building you have multiple shadows cast and the unit doesn't know what to do because it sees multiple shadows pass each eye so a single light source like the sun provides only one shadow. The sky screens can assist with this and they actually make a special lighting kit that you can use indoor that provides a direct source of light to each eye . I've owned one of these chronographs for about 30 years now and I had the same issue when I first bought it along with a pellet gun that I bought at the same time and it simply would not work inside the house.
Factory stock 1991 McPherson Eliminator 30" draw 95# with the cables tied down. Shooting a 26" ACC318 (remember 1991) before the 5gr per pound ruling. 515 FPS . Full length 2419 with 150 gr head 294 FPS. I used to shoot the IBO with 95# with a 330 ACH @ 345 FPS
i did the maths he needed 470 grain arrows and probably a 150 spine arrow. that 330 @ 311 grains was way underweight and underspined on that last shot.
I built a 90# Bowtech 82nd Airborne a while ago. She was and still is some kinda nasty. I'm starting to approach the big 50 and realize I'm not 25 anymore so, although I can still shoot the beast I stepped down to a 70# bow to hunt with.
Ok, so why not get Wake limbs, which will get you to almost 90lbs without twisting cables, and keep everything in time. Especially if you put them the 27. Good luck
You’re playing with the wrong kind of fire on this, 1. If the arrow is too light you’re essentially dry firing the bow. 2. Limbs have a lb rating for a reason, increasing poundage this way past 10% of the rated lb capacity can over stress the limbs and blow up the bow. If I’m not mistaken the libs on any of the Mathews bows that are switch weight bows is 80lbs so essentially taking it past 88 lbs took it pretty far into the danger zone on top of shooting arrows too light for the draw weight
They make a light kit that replaces those white arcs and simulates natural light with no flicker. The chronograph doesn't work with fluorescent lighting, but works great with incandescent light bulbs overhead, because they don't flicker.
Bound by brand PSE and APA are the kings of speed Josh Bowmar just built a 95lb PSE that he pulls like a toy he got 305 with a 571 grain arrow I thought that was pretty good
One day a couple of bulked up weight lifters from the gym next door came into the archery shop. They could not pull a 90# bow back with all those bulging muscles. The kid that ran the shop was thin and about 140 lbs. He could pull it back with one finger!
Hello Chris, I've been following your great videos for a long time and now I'm wondering why you have to pull with brute force to get good speed? I shoot the PSE Xpedite with the LL modules, draw 66 pounds, draw lenght 30" and my arrows weigh 474 grains and they fly at 295 ft/sec, the 385 grain arrow flies at 328 ft/sec... and all that at 66 pounds ;- )
Still shooting my ten year old Z7 extreme @ 72lb. Draw weight with a 350gr. arrow going about 315ish. Drove my Rage broadhead right through the heart of the last Elk i shot.
There's a video of an English long bow archer testing a bow against French armor from the 1400s, to see if they can punch an arrow through a chest plate. It's a 160Ib bow and he mentions firing a 200lb.
So, here's the thing...
Well, first off, I was (and am no longer, but was) the director of engineering at a major bow manufacturer a few years ago.
To meet our spec, we would design our bows to 100 dry fires. The goal is and always will be strength vs weight of the bow components. So, we would dry fire and see what broke, cracked, yielded, bent whatever and then "beef up" that component and dry fire again etc.
So, once we got to where we could 100 times out of 100, get NO breaks, cracks, yields, bends, in anything with dryfires, that would be our final design for the year/series etc.
Strings break, risers bend, limb pockets twist, limbs crack and delaminate (a lot), etc.
Another thing is that we would test at IBO standard of 80lbs of draw weight and 30 inches of draw. That is the criteria that we would design our bows to.
You can, and we did, build some custom bows for some really tall archers, ie 36-38" draw length, and some Africa hunts we would design bows to 120lbs of draw weight. These were custom built monsters. And, of course we would "play around" in the shop with these prototypes basicially, and when you get really long draw lengths, you can get some really good speed.
But, the goal was to get a 5 grain arrow at 30inches of draw to as fast as possible of course w our speed bows. 5grain/lb arrow is the IBO standard, meaning at 80lbs of draw weight, we would shoot 400gr arrows.
The biggest limitation, and it's the one that EVERY manufacturer runs into is the limbs.
There are VERY FEW limb manufacturers, like VERY FEW, like... one, lol. There may be more now, but I doubt it. Anyway, basically the manufacturer would send us the spec sheet on all of their materials. We would work with the spec sheet and try and design the max load per the geometry for different matrices (layers) of materials that we had available.
There is only so much you can do, before you load the limbs too much and they basically just crack and delaminate in catastrophic failure. So, again we would design and push the geometry to the max tensile (top of the limb) and compression (bottom of the limb) loads possible. Then once we designed the limbs and the geometry and the cam loading profile, we would test on the dry fire machine. 9 times out of 10 the manufacturer would be very, lets say lenient, on his spec sheet, and we would delam almost always from our first design.
So then we would back off on our limb geometry until we could get the 100 dryfires wo LIMB failure.
Then would would check everything else. Another common failure mode was the cam axle. It would bend, and of course we want the lightest bows possible, so then the limb pockets would twist as well.
So, then we would do that for every design for the year, and we would shoot 10 shots with a "normal" arrow setup (3, 3 inch fletches, proper FOC etc), and send all of that data to the marketing group. Then the marketing group would have us cut off the fletches, use the pointiest field tips, use our machine to draw and shoot 10 shots (rather than hand held releasing) to get their speed numbers for the season, and take the fastest ONE (Usually about 10-15fps faster than hand held, normal arrow) shot and use that as their number for the marketing materials. No peep, no nock, bare string, unless we could play around with some crimp on nocks and different placement on the strings to get faster numbers. Sometimes we could, sometimes we couldn't, there would be a lot of trial and error.
But, anyway, the moral of the story is, don't do what these guys did.
Anything less than a 5grain arrow, and its only a matter of time before your bow explodes. Based upon what these guys were doing, I would say that the string/cables would be their first failure. They are not designed to be twisted that much. Better to just use shorter cables to begin with. The next failure would probably be the a tension crack on the top layer of the limb glass.
As far as cable twisting and all of that, when you push things to the limit like this, sometimes its best to just get a custom cable made with fewer strands. What you want is a little "give" in the cable/string system. With a higher number of strands, its really a hard "shock" on the entire assembly upon release. What you want is just a little "give" to help reduce the shock once the bow becomes unloaded upon release.
The limbs and the cam and the draw length are all a "system." You can (in essence) make the limbs thicker to get a higher poundage ( our African bows), and you can lengthen the limbs when you add draw length etc. So this "system" is designed to put the maximum load on the limbs at every point during the draw cycle, and change any one thing, ie cable length (cable twists), and it messes up the whole system.
The next thing is the spine on the arrows.
We would use high speed photography and see actually how far the arrows "bowed/bent" upon release. And, the "effective" spine is very dependent on the weight of the tip. So when these guys lightened the tip (75gr) they actually stiffened the effective spine of the arrow system.
You can go down to a 4gr arrow, usually, with a light tip, and get some really amazing speed. In this case when these guys were shooting 95lbs, that would equate to about a 380 grain arrow. And, you SHOULD be safe for about 200-300 (maybe as many as 500) shots, depending upon the bow manufacturers own internal design criteria. But, anything less than 4gr and you are really, really pushing it, and it's just a matter of time. So, wear safety glasses, and a heavy coat, because that thing WILL explode on you.
Also, these guys, even at what they were doing, I would completely disassemble the bow, look at the axles, spin them and see that they have ZERO wobble, and also the cam bearings may "hog out" and become a little egg shaped.
So, just be careful out there guys.
If you're referring to Bowtech - Thanks for the research.... My RPM360 has been doing awesome since new in 2015 & the local Hoyt & Mathews dealers still can't believe how well it shoots & how fast it is... But that gawd awful factory plastic handle piece - That had to go !
Any chance you could say what company it was? Just curious.
@@reaganriddle Sorry, probably best that I don't...
@@cary7721 fair enough
Just curious mate. I dryfired my bow this year 🤦🏻. The only damage was the cams. They bent slightly and collapsed on themselves. The bow didn’t even derail. But was definitely unshootable. Your comment of 100 dry fires seems amazingly excessive given my experience. It was a flagship bow and not some cheapie. Do you know if most bow manufacturers do this type of testing?
I paid to repair mine.
Chris bee: 90 is so heavy
Cam Hanes: 90 is a warmup
If anyone was wondering that arrow at 17 minutes when he upped the poundage to 90 was off camera in under one frame lol
I’m confused?
What are you saying 😂😂😂
It means that the arrow was so fast that it went off camera in 1 60th of a second
"I don't read the instructions, because I'm a man..."
"Well everyone, it's a couple days afterwords. And we figured it out."
Yep, checks out.
Two tips for the chronograph. It works by checking the time between 2 "shadows" cast by a projectile going over the top - the first at the first light gate and the second at the second light gate.
So, 1: You are right about your indoor lights. They flicker 60 times a second so both gates see a shadow 60 times every second. It can't tell if that shadow is the projectile or not. The sunlight is constant so no confusing flicker.
and 2: You are standing too close to it. The front gate is being triggered by the arrow but the string is still pushing it so it is still speeding up. You would see a higher and truer speed if you stood a couple feet further back from the chronograph, give the arrow time to be off the bow before you trigger the first light gate.
Impressive knowledge bro
@@conradspear4241 aka common sense and understanding the operating process behind a device before use… pro tip read the manual the company spent ALOT of money producing it for a reason!
Yep.
great explanation.
Another thing to consider that can throw off the speed by little bit is the angle the projectile is passing through the chronograph. The distance between the eyes is 1 foot, but at any angle other than parallel to the top, there is a cosine error and the distance travelled is slightly longer than 1 foot, so the time to pass from the two points is slightly longer, which will result in a slower than actual velocity. A 10 degree error will result in a 0.33% error which will show 295 ft/s on an arrow that's actually going 300 ft/s. The chrono will never show a velocity that is higher than the actual velocity, but it will show a slower one. This same phenomenon can happen with stationary police radar if the cruiser is too far off the highway. You will be clocked at a slower than actual speed.
Fun video!
The set up was 3.3 grains per pound roughly in a short amount of time the limbs will give. IBO is 5 G per pound and was set a long time ago, a person would think tec advances would allow us to drop to maybe 4 to get greater speeds but ive pushed it and it doesent last long. Also, 44 years old now and use to shoot 83 lbs black night and a 80 lbs PSE for a short while and if you LOVE shooting now you will when your my age too...take care of them shoulders, no good repair surgery really available.
I built numerous bows in the 1980's that were in the 100-135# range. They were all round wheel bows back then. I was shooting 620-1200 grain arrows out of them. Still have the 135# bow, but can't pull it anymore. Fun to watch young guys with good shoulders mess around. I really enjoyed those days. Thanks for the video Chris!
I have a 1980s round wheel compound bow with metal cables that was a recent gift and has been sitting in a case for 3 decades. It looks so new I cleaned it up and have been learning to shoot with it. Its a Golden Eagle Hawk. Would you happen to know anything about it?
@@devinbreeding5412 nope but my 1980’s PSE Fireflight express with custom 6/65 wheels 42 ata @ 70lbs, 31inch draw and steel cables is still one of the smoothest draws I’ve ever shot, like butter to pull, felt more like a 60lb bow ;) I still miss that bow…
135 pound I'm only 12 mine is only at 40 pounds
My V3x 33 was a little long ATA so when I took turns on my cables so it measured back to 33” it had no valley.
Not sure why.
i love how he says its "almost" dangerous
In part this was "we found the lightest arrow ever" and I guess that explains the "almost"
Lol I disliked the video because of the stupid ass title
A 80s model Browning mirage cranked to 80lbs with max draw length and an overdraw is smoking fast. However probably half or better of those that were made the limbs shattered on them.
You need to try APA king cobra bow it will be faster than that at that poundage by far
You need natural light for that chrono, the frequency of indoor lighting in Hz is basically flickering. Therefore the projectile is passing during an absence of full light, the sun doesnt flicker, it's a constant source.
Yeah LEDs are super bad for them too I noticed
Which is strange because leds work off of dc power. Which doesn’t pulse.
he literally said that shit in the video
Now that's my kinda bow :)
I can just see the Mathews engineers cringing when you loaded them limbs!! Your a brave man
Go find a Pse full throttle and set that to 90lbs, it was shooting 362 to 370 at 70lbs. and didn't have to go bat shit crazy to do it.
I have the full Throttle with 60lbs limbs. Its at 62lbs and 28in draw and I get 265 shooting a 567g arrow. It can easily get stupid fast.
a PSE xpedite at 80lbs with the fast mod
@@maverick7873 shooting one of those right now. Haven’t put it through a chrono but it is noticeably quick and so smooth.
Just pick up a Mathews safari 100lb bow and tinker with that
How many grain arrow?
At my local archery shop the owner has a bow with 120 pound draw weight and he gives prizes to people who can pull it back and he tested it and it was pushing 410 feet per second
Back in the 90’s I was in a shop that had a bow the company put the wrong deflection limbs on and was was supposed to be a 70lb peak was actually a 125lb peak. He hands me the bow and said I bet you can’t pull it back. I pulled it back and he told me I was only the second person to be able to do it. As I let it down it slipped off my fingers and I am expecting that I am going to have to but it. He said don’t worry about it.
id like to go to the shop and pull it
POV watching Chris and wishing u could pull 70😂
LOL 😂 I pull effortlessly pull and 80 on bow and I’m a stick, you don’t need to have crazy muscles to pull a bow like this, if you practice every day to every other day, weekly crank your bow up 2.5 to 5 lbs. that’s what I did worked like a charm 👌
@@lewishofmann184 yea I can’t shoot a lot rn I’m in a rental but I’m about 2 months I’ll be shooting every day i will try that though
He pulls 80 like it’s 20 😂
@@J_thelightskin I shoot in my house all the time! Just send it!
@@J_thelightskin 👍 what’s your bow setup I am always interested to what other people shoot, bows, arrows, release etc. I personally shoot a Hoyt Carbon RX3 with Easton FMJs with a four fletch, it’s worked great for me the past few years slayed my first 200 inch deer with it last year at 60 yards, The extra poundage, heavy arrow and four fletch really helped that day because there were 25 mph winds 😂
Jim Burnworth is on video like, 10 years ago shooting an arrow over 400fps out of a Bowtech... and he didn't even "soup up" the bow to do it.
Did he do a video?
If you want more, try the Mathews Monster Safari, 85 pounds and 350 fps out of the box
If you pump it at 95# and use a lighter, shorter arrow, May be you can up to 400fps
A guy in VA named John Moser built a pse over 10 years ago that was 148lb draw that shot a 650gr + arrow over 340 fps
bob foulkrod used to have a signature series bow that went to 90lbs. it wasn't fast but it slung a heavy aluminum arrow with authority!!! i drew a custom high country set up for an African hunt that was 107lbs, but that was forever ago!!! man i am old LOL
@@ChrisFunktheFeralOne lol 33 years ago there was a local bow shop owner that his custom recurve was close to 120 pounds. lol at the time i could only safely shoot it twice.
@Tim brown that was for a huge dude wack'em & stack'em i think his forum name was he could draw that bow like most draw a 40lb it was nothing to him, been looking for the videos of it but haven't had much luck sadly, it was a PSE i think they called it "franken bow" or something like that
Yes I know of them both very well john builds all my strings, anytime you make a bow with different cams it is referred to as a "frankenbow"
@@tbrown91241 yeah i've spoken them both on archerytalk and archeryaddix both very nice people, yes i know but i think they were among the first to use the term for the bow before and the bow you mentioned, it's been used for every bow ever since, wish i could find the videos of it that bow was a beast!
I'm old enough to remember when Beeman started making carbon arrows. My dad was a very avid bow hunter. I remember the day he picked up his new Beeman carbon hunters.After shooting Easton XX75's for years seeing the speed and penatration of those carbons was unbelievable. It was crazy the lazer beams that Onieda Eagle would shoot lol. Blast from the past. Back when overdraws for shorter faster arrows were a thing
A Bodoodle rest would shred the vanes on an 85# bow with the Beemans. I went back to XX75 & 78s and ACC 3-71s.
Twisted up compound: "I just shot 380 fps"
Modern Recurve Crossbow: "hold my beer"
If you’re going to use your ProChrono inside, you’ll need a light kit for it to work properly. Great video! Thanks for sharing. 👍🏹👊
I think he said that at the end of the video.
Would be interested to see Chris do a bow build on a Mathews Safari
It’s probably the only cam system on the market that are engineered for that kind of repeated abuse.
Wish they made it in a 24” draw length.
@@talisikid1618 jeez dude how tall r u
the brace height also increased which resulted in less time of the string pushing the arrow that's why the speed not jumping up so much
I can't believe you have never heard of the PSE full throttle that came out in 2014. It shoots 370 ft per second..
Momentum>speed.
Heavy arrows>>>light arrows.
There's a happy medium in there that's determined by your setup
That is crazy lol. I am so ready to get just one Mathews. I bought an Elite Ritual 33 to use until I get one. Much love Chris! I have learned all I know about archery from you.
Need to play with letoff adjustment , lower let off will give you higher speeds at same poundage. I also recall reading a article in the early 2000 about bows that did 400 FPS , but they did say they where specific built bows that would basically shoot a round and then needed to be rebuilt.
My understanding about bows shooting 400+ speeds like a crossbow (which arrows are much shorter as you know) is that the arrow is technology is not there to handle higher speeds like this?????? I would imagine, carbon with titanium mixed together could solve the problem but I'm only guessing??????
My tx5 at 61lb 27.5 draw 340 grain arrow 308 fps has blown through every deer I've launched it at with a grim reaper mechanical. Heavy arrow not needed on whitetails. Thanks for the videos and God bless you all
Put a string of White LED’son top of those skyscreens. I will work everywhere.
^ yup , this 🤙🏼
My lightest arrow is 292 grains including 85 grain broadhead, but it's 500 spine. I don't know what the lightest arrow would be that you could build for a high poundage bow.
At 74lbs I’m slinging a 600 spine gold tip velocity and 75g vortex broadhead
Please wear safety glasses next time, in case something explodes.
Lol would just smash apart the safety glasses on it's way to destroyer your eyes
@@Kryynism not if they are msa approved. you should read a book
@@kiritimatiswan1986 you should catch a joke noob. Do you even shoot 😂
@@Kryynism you sound rather thick, your joke wasn't funny and just stupid
Lol all you dumbasses should check Kentucky Ballistics, safety glasses saved his eye from a .50 bmg blowing up in his face.
Im shooting 82.5lbs on a APA King Cobra, 585gr arrows and hitting 297 fps
That's sweet. I have a 80lbs Hoyt Axius Alpha shooting 550gr arrow at 288 fps, slightly slower due to more comfortable draw cycle.
@@NoName-bg2om speed doesnt mean anything tbh thats a good set up tho with your grains no doubt.. apa is by far the fastest bows on the market
@@mitchellperry8809 Well I wasn't gunning for the fastest 80lb draw bow, instead I was looking for an 80lb draw bow that I can actually draw and not break myself. Seriously 80lb feels like a punch in the chest every time I draw and that's with a fairly comfy draw cycle/valley/let off %. I love my bows but everyone has a limit. Oh and speed isn't the most important, true. Which is why I went with a fairly heavy arrow, to get as much efficiency out of that bow and still have decent speed.
Got a 90lb apa cobra mt 30in draw length. I get 360fps with a 500grain arrow
Just wondering what that dollar store book shelf bracket his bow scale is mounted to is weight rated for?? Would be terrible if that thing let go, or if the screws stripped out of wall. Instant stained underwear moment!!
That, or the fact that the scale is held to said bracket with a bunch of zip ties.
Was thinking the exact same thing.
@@johningersoll3931 My car is used. I want to know where he gets these zip ties.
Just started archery last week and the guy that runs my club said I should start at 40lb and work up to 50 so the idea of pulling double that seems insane!!! 40 feels easy but I guess it’s good while I learn the technique.
Nearly did the macho thing and bought a 60 but the guy that told me 40 used to shoot for Great Britain (Olympic bows) now he’s moved to compound and it seemed wise to bow down to his wisdom.
only guy i know that would test a chronograph with a 200$ release
I don't understand what the issue is?
@@godukebb137 he was throwing it in the beginning of the vid I think that’s what they are talking about
He does this all the time. It just shows how immature the guy is. He doesnt care about taking care of his equipment. He knows UV will send him more. He gets the stuff for free. I bet if the guy had to work a 50 hour a week job to be able to afford it, he'd think twice about throwing a $270 release. But hes just worried about being a youtube star. Id be embarrassed if i were UltraView. They make great products. Too bad they cant find someone with some sense to advertise for them.
@@nickmaloney5928 stfu let him enjoy what he does. You sound jealous that someone else has more than you. He doesn't need to treat his things like they are diamonds if he doesn't want to
@@nickmaloney5928 quit crying.
That's why the xbow was invented. You can get one that shoots 500 fps,and you don't need arms like Arnold.
You should do a follow-up on how your shoulder feels a few days later.
I'm 57. I was watching this and thinking he is probably gonna regret this video for the rest of his life. It's stuff like this that buggers shoulders for life.
@@d1grizz I'm 30 and dont like even going past 65 pounds I can pull 70 but why 65 is plenty for me ? I killed deer with 50 pounds and with today's technology 60 pounds will get anything in the USA I want to have a healthy shoulder when I'm older i see alot of guys go into bow shop saying the same things like i dont know today my shoulder aint feeling it or similar things and kids my age or younger trying to pull as heavy as they can comfortably and be done after 20 shots people need to learn gracefulness stealth alertness puts meat in 5th he fridge not being a macho man pull 75 pounds after sitting for hours in cold conditions lol no thanks
@@mustang268 I learned my lesson about a month ago I went on a 3D shoot with a bow I bought off a friend, said it was around 70lbs. But compared to my other bow, the draw feels different. As the new one is more compact, so after walking in the heat all day and 40 targets later I felt it for a few days after that. Only shot It enough to sight it in and called it good, the day before. But when I got home I pulled the other bow out and was like wow there around the same draw weight but my older bow just felt much easier to pull back, and I went on a back to back 3D shoot with it and felt almost nothing, and was also 40 targets both days with practicing at the camp site both nights. Nothing wrong with lowering weight.
High Country Archery had a bow, the X-12 I think, that advertised 400 fps with their super light speed pro arrows. I never saw it in person but I remember reading about them.
Maybe you should have a look at some of the "English Longbows" some of them were up to 200lbs, mines quite small at 110lds, I came down from 150lbs due to illness, these things are Awesome for penetration, I practice with arrows made from thick walled Aluminium tube because I was breaking Hardwood arrows at 70 meters, they are very heavy & they hit like a train so I do destroy targets at an alarming rate, but I don't have anywhere with more distance of my own to practice at. Some journals say that a good bowman could have 6 arrows in the air at the same time, I have managed 3 with my 150lbs & which was on my best day, these guys had massive upper body strength, I wonder what they would make of us with our D shaped/Recurve/Compound bows today? I get the feeling they would think us Pussy's then beat us in every comparison & then bring us dinner from out of the forest just to rub it in.
Yet another excellent post thank you.
Well I think we’re safe they all died young many moons ago!!!
ELBs made of Yew are the best. Mike Loades of the History Channel had a custom one built with a lot of reflex. It was about 80 pound. I’d like to find more made with the upper limps reflexed
I have a Bear Carnage shadow. At 80# I'm getting 355 fps. I'm not sure what my arrows are setup as. I have a 31 draw, but i use a setback drop away rest, so my arrows are cut at 30". Weird thing is, It's not violent or anything on release, the Carnage has the string stops. I backed it off to 70#'s just to make it last longer, it's still my favorite bow and I still use it.
But what about the PSE Full Throttle? That bow has a rating for 370 fps untuned. I guess if you would twist some cables and use a stupidly light arrow, you could brake the 400 fps.
There are quite a number of bows from history that are much stronger in some cases but these are Traditional bows or Compound bows like the Mongolian/Turkish/Scythian bows around 100 to 166lbs draw, it seems the English Longbow is the heaviest at 200+lbs but I don't know what speed their arrows were, that said they are usually quite heavy due to the materials used & the job they were built to do, I don't see anything nowadays that would punch through SteelPlate, but having fun with bows today is probably much easier.
Can you make a 100 lbs compound bow in lever action? That would be awesome to see
Presenting such a thing requires an introduction concluded by "let me show you its features!"
serious question, i have the v3 31 but i hate the shallow valley "jumpy" at full draw, by adding the twist in the cables did that help at all compared to the factory cable twist, & valley?
Imagine the d-loop breaks and Chris punches himself with 98 lbs of pressure in the face.......that would suck
I had the d loop in mind the whole time lol
Had something like that happen pulling 70 lbs (release failed and d-loop slipped out). I hit myself so hard I didn't realize my arrow flew off the string and landed 10 feet away and I dry fired it on the next shot. Not a good moment.
I was shooting 70 pounds and my d loop broke and I punched myself in the face and my nose bleeded for 15 mins
@@suspect1015 lol sorry, I was messing with the sensitivity of my release and it couldn’t handle the weight and hit me in my eye😂
Haha..i know that feeling. Punched in my face one time, cause my release opend accidently. I put the opening to low for it. And here comes the trick...i never pulled again direktly towards the face. I pull slighltly more to the right side, and after its pulled, go back to my normal angle point. That helps ^^
Twisting the cable up shortens the cable. And twisting the cable compromises the Integrity of it. I have a PSC fireflight LC I bought in 2000, with Beman IC 340's with fixed bear broadheads and 70# it's arrow speed is 328 fps. I have taken a lot of deer with it some out to 40 yards. I retired it 3 years ago when I tore my bicep up at 60 years old. I believe draw weight has a lot to do with fps but cam designed is what really makes the speed.
Goes to show how inflated IBO speeds are on bows nowadays.
For sure on most of them. Archery talk shot all the new bows from every major company and PSE was the only bow that came in at the speed advertised. Most of them were 18-20 FPS under advertised speed
They only seem inflated because you're not using a 350 gr arrow at 70 pounds with 30 pound draw. Anything less than that drops speed, they aren't lying to you. The mathews V3 is 342 ibo at those specs. I did mine today with a 365 gr arrow, 28" draw at 72 pounds and it went 320. That extra weight and shorter draw is where it went. A 465 gr arrow went 290. All they're doing is telling you the maximum speed at a certain spec and using a heavier arrow is better for hunting anyway.
Not in the archery talk test. They tested them at ibo spec and that is the results they got. That is inflated specs.
@@hunteradamson5024 so are they being called out on it? They're using an organizations name and lying on it
@@WCGwkf I don’t believe they would lie. I know from my own experience it’s rare a bow shoots up to spec from the manufacturer ratings. I’d never shoot a ibo spec set up. But I do like to play with seeing what a bow does at those specs.
M new to a compound bow i used a traditional bow up to last year. Im planning on go to the range my sight in. My yard has 2 spots 15 yards and 19 yards ill sight in at 15 yards and then hit the range for 25 yards most of my hunting is limited to 15 to 30 yard shots. Im using an iglow bow with walmart350 sline with 100 grain 3 blade broadheads. So i have some things things to try
Forgot to tell of the one dude from Tucson AZ shooting an "experimental bow" at a 3D it completely blow threw a brand new McKenzie deer at 30 yards. After that shot they gave his entry fee back and told him Che can't show that bow. Never got any info on the bow since it was an experimental bow. Lol..
His name is Charlie. I shot a leg of the triple crown with him and he was shooting over 400fps
Charlie Swartz. Shot with him last week at Clints Well. His setup is now much slower lol
@@p23721 wow I haven't see the reply from my initial post. No I have a name for the story I've heard!
Get your hands on an APA King Cobra TF2. They are rated up to 370. The new DG version is rated to 365. My TF2 is throwing a 448 grain finished arrow downrange at 309... imagine the possibilities with just a 70# bow...
Chris, check out the APA King Cobra, they have had the option of 90lb limbs for a while now
I immediately knew you needed sunlight when there was a problem that's how mine is, if you have it under straight fluorescent tubes it reads the frequency of the lights and throws numbers up. Can only use it during the day, but the chronograph needs a white background for best readings. A cloudy day would work too. They make indoor self lit chronographs that cost more. I chronod my V3 today and have 290 fps with a 465 gr arrow at 72 lb. Also tried a 360gr arrow and had it at 320
A 105 grains difference in the wight and you only gained 30fps ?
PSE full throttle, is still the Ibo King and not at that kind of poundage, the Mathews monster safari will send a heavier arrow faster than the full throttle
Apa king cobra is the king of speed. Will actually hit advertised speeds and then some
Try sticking one of those round under cabinet LED battery lights under each diffuser and your chronograph will become so much more reliable and you will be able to use it indoors !
I was actually wondering what those compound bows are capable of if one puts them through the stress you did . A really cool experiment I thought . I’ll leave the 100 pound stuff to my long bow though . A little safer lol
Again cool experiment. Cheers
APA King Cobra is available with 100lb limbs from the Factory and has an IBO of 365fps. Would be interesting to see a comparison.
😰 Well that was nerve racking! 😰
When I was going to school in Phoenix Az (1993) Randy Phillips (Archery headquarters) had a custom 100lb PSE made for him. Shot fast but was really LOUD!
I’m convinced Chris has at least 25 bows 😂
He needs em' all to make his studio look cool!!JK!
My uncle uses 100lb draw on his bow. In his 60s. I couldn’t even move it.
josh bowmars new hunting bow being 90 lbs 😂
bet he can poach a lot of animals with that
@@jimmywallhanger8402 I haven't heard of this? How true is it?
@@timothylove8839 where have you been? Between poaching and false advertisement of their supps they’re all over the place.
@@PaceWC how much of that is factual and how much is just here say and people who simply don’t like their success, trying to bash them online? I’m generally curious not trying to argue
@@timothylove8839 All the filing against them are just a google search away
Can anyone answer this. I have a 45# max bow for my lady. when I adjusted her draw length, it drops to 35#. Can you safely twist the cables to get it back to 45# and safely use?
Joe Rogan and John Dudley watching this: "We gotta crank ours up now...damn it Chris"
Dont you mean Cam Hanes? 😂
@@RC_Berserker you throw him and the 91 pound hammer in there too.
On chronographs the lighting is important. It use lite to make a shadow over the slots on top of the chrony to see the arrow or bullet pass over. As it passes it breaks the lite beam and it sees that and measure the break in the lite between the two slots and the light has to be almost 100% natural and unbroken. Inside lighting like any floresent light will mess with the chronograph.
That’s cute my bow is 150lbs
Is it a compound bow. Or a traditional bow.
Mines 286 pounds 😊
@@Jtryan123 wow must be a trad bow..Wright. what grain does that shoot 2k grains
Bro y’all are weak I pulled 300 pounds
Big tough guy aye
Looks like you have a white ceiling in that shop, and as long as it's not really shiny, use one of those bright construction floodlights and aim it straight up at the ceiling above your chronograph. Make sure the ceiling area above the chrony is clear of anything, all white. The chrony needs a source of diffused light and the ceiling will provide that. Won't need the sunscreens. Use the sun screens outside on bright, cloudless days only. Best outdoor light for a chronograph are the full overcast days. No sunscreens needed.
That works out to 3.29 grains per inch. That’s crazy light even before there was a minimum GPI in the 90’s. What’s your draw length?
Chris what's your opinion on the BowTech BTX-31? I picked one up and averaging 351-353fps with it set on the performance setting . It's a beast of a bow . You sacrifice the let off on the performance setting. Be cool see you review it even though it's a 2016 model.
Im shocked that shootimg 81 pounds at only 355 grains didnt damage the bow that is less that 5 grains per pound and 5 grains per pound is the minimum recommended weight
My thoughts exactly. I was expecting a recipient of the Darwin award lol
5 grains per lb is the limit to keep your warranty intact. The bow won't implode at 4.9 gr/lb.
What about 94.70 lbs at 311.40 grain arrow
At 3.29 grains per lb. by my math.
@@jeremywilson1299 I'm not sure if High Country Archery is still in business but they used to sell specific arrows with their bows that were ~3 grains per pound. The archery shop by me used to sell a bunch of them and they didn't have any more limb failures than any other company. At the time Bowtech was having a ton of limb failures with greater than 5 grains per pound. If the bow is well built, their shouldn't be an issue
Geez,380 FPS is simply smokin' for a traditional bow!
I'm getting 349 fps with a 350 gr arrow 31 draw 70lb, revolt x.
Hey boss. You can use the chrono without the sun shade when in a darker area. Took me awhile to figure it out haha (I precision rifle shoot so it's a must that every shot counts on the chrono)
I chipped my tooth building the fastest bow, 20 years ago
"100lb draw weight compound bow"
Historical archery: would you like to try my 240lb English Longbow?
I sweat less after a run than i did during this video
The light sensors on the chronograph are one foot apart and the chronograph simply sees the shadow of the bullet as it passes and clocks the amount of time it takes to travel 1 foot so you have 1 foot in parts of a second or a feet per second. The problem is when you have multiple white sources like multiple light bulbs inside of a building you have multiple shadows cast and the unit doesn't know what to do because it sees multiple shadows pass each eye so a single light source like the sun provides only one shadow. The sky screens can assist with this and they actually make a special lighting kit that you can use indoor that provides a direct source of light to each eye . I've owned one of these chronographs for about 30 years now and I had the same issue when I first bought it along with a pellet gun that I bought at the same time and it simply would not work inside the house.
I felt my shoulder pop just watching 😂
He is by far the best UA-camr for you intrusive thoughts, also the best UA-camr on UA-cam
Chris, try maxing the draw length out!
Trying to figure out where the digital is helpfully other than show you distance? Cool sight...just missing the concept of electronic part of it?
Id be curious to see how much arrow diameter plays a part in arrow speed same arrow weights with different 4mm 5mm 6mm 6.5mm 🤔
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Florescent light flicker and mess up the readings ❤.
Use halogen and Incandescent bulbs only with chronographs.
I just got new strings and watching those strings get all twisted made me feel sooooo uncomfortable
Factory stock 1991 McPherson Eliminator 30" draw 95# with the cables tied down. Shooting a 26" ACC318 (remember 1991) before the 5gr per pound ruling. 515 FPS . Full length 2419 with 150 gr head 294 FPS. I used to shoot the IBO with 95# with a 330 ACH @ 345 FPS
Dude aren’t you pushing the limit since most bow mfg. want you to stay up at 5 grains per pound
i did the maths he needed 470 grain arrows and probably a 150 spine arrow. that 330 @ 311 grains was way underweight and underspined on that last shot.
I built a 90# Bowtech 82nd Airborne a while ago. She was and still is some kinda nasty. I'm starting to approach the big 50 and realize I'm not 25 anymore so, although I can still shoot the beast I stepped down to a 70# bow to hunt with.
That bracket you’re using for your bow scale is meant to hold plants. Get a stronger bracket before you hurt yourself
Can I take a 80# bow twist the string some to get it up close to 90# and tune it and shoot it yr around??
Love the video can’t wait for more! Best UA-cam out there Chris bee
3.3 grains per pound?🤔........ Send It! 👉😎👉 😂😂😂
Ok, so why not get Wake limbs, which will get you to almost 90lbs without twisting cables, and keep everything in time. Especially if you put them the 27. Good luck
I have an vxr 28 with wake limbs an it will go over 100lbs. I was shooting it at 94 but goin to hunt with it at 88
@@mark-gi7wo what are you hunting for? Cape Buffalo 🐃 or Elephant 🐘
@@HuntsT hahaha no I did it because nobody had done with an vxr
@@mark-gi7wo which wake limbs are you running? 70s or 80s? Did you have to sand anything on the pocket end of the limbs to make it work and lock in?
@@HuntsT 80 I used the wake pockets also
Your blogs just get better and better
vlogs**
You’re playing with the wrong kind of fire on this,
1. If the arrow is too light you’re essentially dry firing the bow.
2. Limbs have a lb rating for a reason, increasing poundage this way past 10% of the rated lb capacity can over stress the limbs and blow up the bow.
If I’m not mistaken the libs on any of the Mathews bows that are switch weight bows is 80lbs so essentially taking it past 88 lbs took it pretty far into the danger zone on top of shooting arrows too light for the draw weight
They make a light kit that replaces those white arcs and simulates natural light with no flicker. The chronograph doesn't work with fluorescent lighting, but works great with incandescent light bulbs overhead, because they don't flicker.
Bound by brand PSE and APA are the kings of speed Josh Bowmar just built a 95lb PSE that he pulls like a toy he got 305 with a 571 grain arrow I thought that was pretty good
One day a couple of bulked up weight lifters from the gym next door came into the archery shop.
They could not pull a 90# bow back with all those bulging muscles. The kid that ran the shop was thin and about 140 lbs. He could pull it back with one finger!
Hello Chris,
I've been following your great videos for a long time and now I'm wondering why you have to pull with brute force to get good speed? I shoot the PSE Xpedite with the LL modules, draw 66 pounds, draw lenght 30" and my arrows weigh 474 grains and they fly at 295 ft/sec, the 385 grain arrow flies at 328 ft/sec... and all that at 66 pounds ;- )
Still shooting my ten year old Z7 extreme @ 72lb. Draw weight with a 350gr. arrow going about 315ish. Drove my Rage broadhead right through the heart of the last Elk i shot.
If you put it on your tongue it just tingles or pinches a little bit depending on how much juice it has it doesn't hurt try it
There's a video of an English long bow archer testing a bow against French armor from the 1400s, to see if they can punch an arrow through a chest plate. It's a 160Ib bow and he mentions firing a 200lb.
You had to mighty swole to shoot those!