The ULTIMATE Reason CROSSBOW LIMBS BREAK! (Breaking Limbs, Ep 2)

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  • Опубліковано 17 лис 2024

КОМЕНТАРІ • 167

  • @jocooutdoors8784
    @jocooutdoors8784 2 роки тому

    May I ask, how are you calculating the outgoing KN? The input make perfect sense, but I can't see how to determine the goes outcha,

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому

      I should have mentioned that better here but I did other videos on that...It's 1/2 m*v squared...or m*v squared / 450,240 to translate into ft lbs... some online calculators use a different figure to translate to account for sea level I think so their numbers might be very slightly different but really really close. The calculators on deathbybunjie.com will do a pretty good job of calculating it for you, too. Hope that helps!

    • @jocooutdoors8784
      @jocooutdoors8784 2 роки тому

      @@Deathbybunjie thank you. I found it. A bit disappointed with my results. I am shooting a Barnett Whitetail Hunter STR. After entering all the data, I came in about 45% efficient. I was hoping for a bit better. Thank you for your videos and the great info you provide. Look forward to seeing the next one on bolts.

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому +1

      Don't be disappointed! Crossbows are just inefficient, some more than others but next 2 episodes will offer suggestions to make your crossbow more efficient!

  • @oldgrumpyhunter
    @oldgrumpyhunter 2 роки тому +19

    Besides Bunjie not being built to the edge of technology back in the day, it had MORE MASS to absorb the excess energy.

    • @jamesmartin7282
      @jamesmartin7282 2 роки тому

      You beat me to it. I should read the comments first. 😁

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому

      Lol

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому +1

      Well, Bunjie is 5.8 pounds advertised mass weight. Bunjie, Jr., is 5.6 advertised mass weight. Not much difference, really. Both have added extra sized stirrups, too. Also, Bunjie, Jr., was all decked out with rubber, maybe making up the difference in mass.

    • @boomerrangerron
      @boomerrangerron 2 роки тому

      Yes, it indeed has more mass for sure! It's a MONSTER bow!

  • @OfftheHookOutdoors99
    @OfftheHookOutdoors99 2 роки тому +10

    I always like to use a heavy arrow. I think it helps absorb the energy and don’t in words dry fire the crossbow. The energy is transferred into the arrow. So the lighter the arrow the more you are in terms dry firing the bow.

    • @danarichards6517
      @danarichards6517 Рік тому +1

      I have heard that I'm trying a 50 gr increase in my arrow head's

  • @BackyardBroadheads
    @BackyardBroadheads 2 роки тому +8

    Another helpful calculator would be an arrow drop calculator that starts at 0 yards and shows not only 20 to 100 yards but 1 yard to 20 yards so when you have a 3 yard shot you will see how many inches high that you need to aim because the scope is mounted above the arrow. Your bolt will hit low at very close range. Being prepared for that will give you more ethical shots when you have to finish an animal off.

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому

      Interesting!

    • @boomerrangerron
      @boomerrangerron 2 роки тому

      I didn't know that as a rifle and slug gun hunter, I'm used to having the trajectory fly high before it hits the target at say 50 yards. Very interesting analysis!

    • @tracyhaynes5404
      @tracyhaynes5404 2 роки тому

      @@boomerrangerron the same applies to firearms. From 0 to somewhere around 20 yards your projectile will hit low. Bullets and arrows alike actually cross the line of sight twice during flight

  • @twooldguyswithcrossbows5170
    @twooldguyswithcrossbows5170 2 роки тому +5

    The questions I ask myself are:
    Do we really need the extra speed?
    Is it so I can shoot farther to target?
    Do I need to increase my shooting distance?
    My answer to myself is no I am being successful. Why would I wish to risk making a poor shot placement? I love the challenge of the hunt and bringing the game into an optimal range. If I want to shoot farther distances I have my rifles.

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому +1

      I do agree...BUT this year watch my 2 shots on deer at 20 and 30 yards...both through those deer before they could react...hard to slow down after seeing that. But I'm not looking at long shots either.

    • @chrisruzsa2798
      @chrisruzsa2798 2 роки тому

      The speed is for what Rich is doing staying in that ethical range of 50 yards in and yes it matters because a deer and its reaction is a problem having a bolt that is fast and heavy to go through the toughest parts of animals with 💯 through and through is what we should achieve not being able to shoot 100 yards or more and wound deer or worse.

    • @twooldguyswithcrossbows5170
      @twooldguyswithcrossbows5170 2 роки тому

      @@Deathbybunjie Yes true and my Assassin is 360 fps and a smaller compact head which is very nice, same width as Bunjie jr and as you know gives the advantages of hanging out the blind window to shoot lol ! But that is why I wanted the Assassin for the compact design not really the speed because I do have a Crosman Sniper 370 fps so speed is nice but not a necessity for myself. I do understand tho since Jason is still shooting the Axium and ya slow with big arch lol 😝

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому

      @Two Old Guys with Crossbows hang out of blind haha not recommended lol...you guys are having fun, love the videos...that's #1 haha

  • @one-eyedarcher
    @one-eyedarcher 2 роки тому +3

    Another great video Rich! I'm gonna have to get the numbers for my bows and visit this calculator of yours and see how inefficient my bows are. 🤔

  • @danielpollard3969
    @danielpollard3969 2 роки тому +1

    Rich, I just know that my Horton Legend XL 175 I bought in 06 and I never (thank god) had a problem with her. My babygirl has taken numerous deer and has gone through three strings and hundreds of shots. I just changed this year from a red dot to a scope. Even though it’s old and heavy and slower,I would not change it for the world. “ALL HAIL BUNJIE” Your friend Dan from Jersey.🗽🦅🇺🇸👍

  • @ronlongwellphoto
    @ronlongwellphoto 2 роки тому +1

    This is a very illuminating series. My Tenpoint Titan M1, shooting a 504 gr. arrow at a chronographed 325 fps, is roughly 56% efficient. Not a barn burner, but farther away from the bleeding side of the cutting edge. 😄 Can’t wait to see the remaining videos in this series. Keep up the great work, Rich!

  • @jamesmartin7282
    @jamesmartin7282 2 роки тому +3

    Bunjie (OB) may have had a couple things going for it. (1) being older, Excalibur may not have known yet how to cheaply make a crossbow so they over-designed it some (beefier limbs?). (2) The extra mass weight of OB helps to absorb energy the way a heavier gun reduces felt recoil.

  • @raymondcava4669
    @raymondcava4669 2 роки тому +1

    Rich thank you for the video I really like the amount efficiency versus what is wasted angle. That would explain all the noise that Crossbow makes.

  • @charlesoleary3066
    @charlesoleary3066 2 роки тому +2

    Very interesting, now for the heavy arrow set ups 😁
    This will be interesting as I should receive my extra weights from black eagle next week .
    Excalibur 360TD micro series

  • @lstownley
    @lstownley 2 роки тому

    Another well done and informative video! Thanks Rich.

  • @davez3887
    @davez3887 2 роки тому +1

    I went 2 seasons in a row where my limbs broke on my Excalibur Mad Max. Has anti dry fire, so no issues there. I shoot heavy arrows/broadheads. De-string after season is over and make sure things are snug and tight. But they told me they had some QC issues with manufacturing of limbs. Unfortunately there were still some being distributed, and my replacements were defective as well. All was good this season. Excalibur customer service was top notch and replaced both times after I contacted and sent pictures. Still have two Excalibur’s in my arsenal. No bad feelings.

  • @JohnSmith-gv3nq
    @JohnSmith-gv3nq 2 роки тому +2

    Keep up the good work

  • @michaelherrell5381
    @michaelherrell5381 2 роки тому

    Great info. Good show. Thanks for sharing

  • @theamputeehunter4051
    @theamputeehunter4051 2 роки тому

    Nice video like this series so far can’t wait to see more thanks keep up the good work

  • @chucksmith5002
    @chucksmith5002 2 роки тому

    Very interesting I have already Broke a limb on my Killer Instinct Target shooting in the Back yard and the Arrow was seated all the way back. Enjoyed it

  • @rongarofalo3482
    @rongarofalo3482 2 роки тому

    More great tech info Rich. Very interesting.

  • @rextex4222
    @rextex4222 2 роки тому

    I may learn something yet. Keep 'em coming, Rich.

  • @leveraction767
    @leveraction767 2 роки тому +1

    Very good #2. I liked this one very much.
    Looking forward to the arrow mass video.
    As I have pointed out (many times) a heavier arrow results in lower lost energy, to the limbs. If you have a 280# draw weight and use a 270# arrow...Pull the trigger and all you will get is a moving arrow. No sound, once the string comes to rest. Nearly 100% efficient. Nothing lost to the bow. No damage to the string. Nothing at all in negative, in terms of damages. Now taking this insane example to realistic end.... The heavier the arrow...The less damages that can be inflicted on the bow.
    Compounds (anything using a pulley system) such as B3 are far more efficient due to the fact that they use leverage to create additional speed, beyond the limb weights, to which they are attached. Fulcrum principle, simply stated. The total load is always less than total travel. This is what makes traditional bows like the O.G. so inefficient, as they need full travel to match the compounds 80/90% travel.
    Anyways...
    The shorter limbs are the larger issue. As was said (1st video) you are attempting to spread the greater load over a shorter distance. Anyone who wants to break something can envision that it's going to be easier to break a short stick with 2X the force exerted as compared to a longer stick with 1/2 that weight.
    Just spec'd my Scorpyd off the Bunjie Calculator. 82% efficient with my current arrows. :)

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому

      You like heavier arrows? Lol...agree on the shorter limbs...that = shorter power stroke and less time to impart energy into arrow. But if you pull em back too far they break...seems Excalibur is going route of shortening power strokes it seems though

    • @leveraction767
      @leveraction767 2 роки тому

      Excal is shortening the stroke but increasing the weight. Thats net neutral IMO and you still end up with a short limb which is going to fail faster than a long limb. Excal is attempting to make the blanket longer by cutting a foot off the bottom and sewing that piece to the top. Its funny sad and very stupid. What they need is a new blanket, all together. Carbon laminate and all will be well. Thats my view.

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому

      @Lever Action new limbs have new design, we'll see how that works. Fibers entire length. The new 380 has them, same as the assassins. But I think the 380 is the real test...it'll be in more people's hands

  • @kingrider75
    @kingrider75 2 роки тому +3

    I won’t lump all manufactures into this but I believe some are riding the ragged edge on arrow spine/weight. Crossbows limbs aren’t any different than compound limbs as far as excess energy being transferred back into the bow with arrows that aren’t properly spined. Heavy arrows for me

  • @dennisbittiker7167
    @dennisbittiker7167 2 роки тому +2

    So the true question is.... how well manufacturers stand behind their products. Excalibur A+

  • @MichaelCartwright-h9b
    @MichaelCartwright-h9b 9 місяців тому

    Interesting information thanks

  • @countryboyreviews
    @countryboyreviews 2 роки тому

    Just had to comment and say that is a really cool intro on the “ Breaking Limbs “ series. 👍

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому +1

      Well thanks for that! I appreciate it.

  • @neilboggess9190
    @neilboggess9190 2 роки тому

    I just hope my wicked ridge m370 limbs don't break for awhile. Keep making great videos neil from West Virginia

  • @stevenhicks815
    @stevenhicks815 2 роки тому +1

    Great video. Thanks for information, man that’s crazy the scorpyd is so much more efficient on stored energy.

    • @stevenhicks815
      @stevenhicks815 2 роки тому

      Wish I had money I would buy one lol

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому +1

      Time will tell but don't forget 1. There are other xbows out there that are pretty efficient and 2. There are some things we can do to make each xbow a little more efficient...that's coming up soon

    • @stevenhicks815
      @stevenhicks815 2 роки тому

      @@Deathbybunjie I agree I can’t wait for the videos you are putting out amazing information love it! Thanks!

  • @bfoster101
    @bfoster101 8 місяців тому

    I watched a shooting test on crossbows. The recurve vs. compound. The compounds made 150 to 300 shots the cams started to fail. And the recurve was up in the thousand shots. And still shooting with accuracy. What I like about my recurve is I can change toe bowstring out in the field.

    • @Deathbybunjie
      @Deathbybunjie  8 місяців тому

      They're all different. I did a podcast with a Friend of Bunjie who got 20,000 shots out of his Compound crossbow on the same set of limbs. Genevieve didn't make 750 on her recurve. Those are just examples but they certainly don't speak for all crossbows of course. They're all different.

  • @carloscotto937
    @carloscotto937 2 роки тому

    Very impressed on your videos. I've been looking at them for quite a while. I've been thinking of going with a crossbow this year well your videos are very impressed keep it up my friend.

  • @jrd8640
    @jrd8640 2 роки тому +1

    Basically we need a crossbow that super fast, short power stroke, and low draw weight.

  • @OfftheHookOutdoors99
    @OfftheHookOutdoors99 2 роки тому

    Thank you for this info!👍

  • @SuperChloeGymnast
    @SuperChloeGymnast 2 роки тому

    Very interesting video Rich! Can hardly wait to see the next in the series! One thing that Bunjie Jr has going for it over the others is less arrow time on the string or the shorter the power stroke, the more forgiving the bow will be which helps out with accuracy. Very much like a higher brace height in a compound bow vs a lower brace height is generally more forgiving. Keep up the great work man!

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому

      BUT shorter power stroke = less time for string to impart energy to arrow, which unfortunately makes it far less efficient. Good video topic here thanks!

  • @dwaynephilpot6154
    @dwaynephilpot6154 Рік тому +1

    My Barnett whitetail pro it’s not super narrow not like the new ones it shoots a little under 400fps. I have had no limb problems. But my Excalibur micro 380 I have had limb problems.

    • @Deathbybunjie
      @Deathbybunjie  Рік тому

      Man, that stinks, and that's like a new model too!

  • @chickimac1
    @chickimac1 2 роки тому +1

    The Mathews no cam bow that came out a few years ago, claimed to be 90% efficient

  • @pauloehmen1665
    @pauloehmen1665 2 роки тому

    You should be working at a crossbow manufacturer as chief engineer with all the specs you just pumped in my head 😁. It made a lot of sense with the excess energy going back in the crossbow

  • @BackyardBroadheads
    @BackyardBroadheads 2 роки тому

    I used your calculator, my Ravin R29 is 55.54% efficient. I'm glad it's above 50%!! That is with 400 grain bolt and 427 fps. Not sure of it's efficiency with my heavier bolts. Thanks for adding the calculator.

  • @stephenhall5430
    @stephenhall5430 Рік тому

    Hey man I just got a axion on ebay for 190..CAnt wait to get it outfitted and go hunting. Where I live has huge mule deer and elk.

  • @georgebruce695
    @georgebruce695 10 місяців тому

    Thanks!

  • @BackyardBroadheads
    @BackyardBroadheads 2 роки тому

    Awesome video

  • @darrindecker6836
    @darrindecker6836 2 роки тому

    very educational video!!! i love the information and in depth research on these crossbows... my very question i was going to ask you about how we can make them more efficient is a subject your going to cover... love it!!! but, I'm still curious about the locations of limb failures? design flaw? weak point at the yoke of the limbs? limb bolts?? Is Reverse draw limbs better compared to traditional compound draw limbs?? very interesting stuff.. keep up the good work and i look forward to the other upcoming videos on this subject..

  • @BackyardBroadheads
    @BackyardBroadheads 2 роки тому

    Ok. That explains why kinetic energy goes up as arrow weight goes up, the efficiency and the amount of time that the arrow is in contact with the string increases. Right?

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому +1

      100% it's slower, more time to impart energy

  • @boomerrangerron
    @boomerrangerron 2 роки тому

    This was great Rich! You always do such a thorough job of researching your topics! And of course you brought the jury to the courtroom as well! I'd love to see your opinion of the new Bungie and it's reverse draw setup?

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому

      Love it will do a video looking back on it what I like and don't like after a year

  • @locksbog4270
    @locksbog4270 2 роки тому

    Good stuff Rich! I believe the vixen was the slowest at the time with a 13 1/2 power stroke. I’m pretty sure In the beginning Excalibur used the same limbs on all their models and just increased the barrel lengths from a 13 1/2 stroke to a 16 1/2 in one inch incriminates to achieve 350fps on their top model at the time.👍😃✌️🇺🇸

  • @kevindonahue7355
    @kevindonahue7355 2 роки тому

    All hial bunjie keep the good things going very interesting information almost makes me want to shoot alot heavier bolts to save wear on the limbs and a heavier swacker at the end

    • @kevindonahue7355
      @kevindonahue7355 2 роки тому

      Hurry up turkey season want to try crossbow on one I really want to get a elk with it

  • @justinsidervag8008
    @justinsidervag8008 2 роки тому

    Had my GRZ 2 5yrs now.
    12 deer , 3 coyotes , who knows how many shots , even a dry fire once.
    Never an issue .

  • @draggindeeroutdoors
    @draggindeeroutdoors 2 роки тому

    Rich, fantastic video! This may not be possible....but is there a way (or do any of your contacts have a way) to measure or determine how "close to the edge" a crossbow design is?
    Or some way to establish a baseline (with today's bows) for bow efficiency vs. limb life? If so, factory advertised speeds, bolt weights, draw weights and power stroke could all be used to gauge bow/limb life before even purchasing a bow. Very interested/intrigued by this. Great job!!!!!

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому +1

      Man I think that's great...up for consideration! I think overall efficiency is a close start. Having a lot of overall leftover energy stresses everything. Second thing to consider would be buying an older model from a manufacturer, not their latest and greatest. The latest and greatest is most likely as close to the edge as they can get. This is a great idea though will think on it!

  • @beorbeorian150
    @beorbeorian150 2 роки тому

    Wonder if they can or will build in some kind of force absorbing system to take the stress off.

  • @chrisruzsa2798
    @chrisruzsa2798 2 роки тому

    Very good video yet again. Comparing vertical bows to crossbows is really hard to do. Its also just as hard to compare crossbows to reverse draws.
    You will notice that there is a major words used in crossbow thats “pulling” the projectile. Reverse draw pushes the projectile this allows for the energy to dissipate away from the limbs. Your shock absorbers also move they are free floating that absorbs probably over 50% of the unspent energy. Many may disagree with me but there is a difference in pushing and pulling. Bunjie 3.0 shouldn’t have any issues. Bunjie 1 the original well lots to consider on that. Wider limbs can take more energy the heavy dacron string could take more as well so dry firing with that string was okay to do. You couldn’t dry fire with the flemish though. Materials and how limbs are made is a huge issue. Composite limbs have a hard time handling this pressure. The mostly fibre glass with carbon fibre, this gives them the reduce weight bit does it ever affect the overall life. Anyways great video cant wait for next week to get the arrow conversation. Great job.

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому +1

      I've dry fired flemish and fast flight strings both...difference was fast flight string came clean off the limbs haha

    • @chrisruzsa2798
      @chrisruzsa2798 2 роки тому

      @@Deathbybunjie wow i am really surprised by that. I know if i use the flemish it will destroy my whole front end. The Dacron came clean off every time I dry fired. Maybe OB is the best lol

  • @exrezcnm
    @exrezcnm 2 роки тому

    Remember that the longer the length of the limbs (and mass) the greater area the energy is dissipated/dispersed.

  • @americocoppola773
    @americocoppola773 Рік тому

    Hi, I have a question: when you are calculating kinetic energy that you put in the crossbow you use the formula draw weight x powerstroke but draw weight isn’t constant, you use peak draw weight. Peak draw weight is hold for a few inches in compound crossbows generally at the half of powerstroke and even at max draw weight entering the let off which decreases draw weight.
    So if you calculate kin incoming and use data about real draw weight for different powerstroke and not peak draw weight
    then efficiency is slithly higher
    Thanks in advantage for the help, love this channel ❤

    • @Deathbybunjie
      @Deathbybunjie  Рік тому +1

      Yep, I mentioned that in the video, and without testing each crossbow and measuring it independently there is no way to calculate those numbers really, but given that they're all on a even playing field we can still calculate the difference between one model to another and that is quite impressive

    • @americocoppola773
      @americocoppola773 Рік тому

      Thanks for the answer Rich !

  • @andrewwhittaker2908
    @andrewwhittaker2908 2 роки тому

    Gotta love the sledding. 🤣🤣🤣

  • @alishagoble1920
    @alishagoble1920 2 роки тому

    I had a crossbow bust on my foot just a couple days ago , my arm snapped the support arm shot down through the foot bar and pinned my foot. My foot now is doing alright. Key word alright

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому

      Man, that is crazy! I hope all is good. Best wishes.

  • @williammunny9206
    @williammunny9206 2 роки тому +1

    wuz going to order my new crossbow . . . now am a thinking🤔

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому +1

      Watch the next 2 vids too then order away lol

  • @Kurtdog63
    @Kurtdog63 2 роки тому

    The science guy mentioned the energy not imparted to the arrow goes back into the bow, either in the form of heat, or sound. For many years archers have noticed, all bows and crossbows were definitely louder, the lighter the arrow was that was shot out of them. As arrows get lighter and lighter, the bow/crossbow is getting closer and closer to simulating a dryfire and expending more and more of its energy into itself. I am no scientist, but, a heavier arrow, does not seem to show KINETIC ENERGY numbers that are much different than lighter arrows shot out of the same bow/crossbow. What does show a greater significance, is MOMENTUM. Which in terms (for my level of understanding), is a moving object's ability to maintain its velocity, when it meets resistance (heavy bone, for example). This appears to me, is a shift of focus on the efficiency of the bow/crossbow, and moves the efficiency focus to the arrow itself. My guess is, that the heavier the arrow, the higher the momentum, and the more energy that is transferred to the arrow, and as a result, less energy transferred back into the weapon itself.

  • @douglasborgaro6801
    @douglasborgaro6801 2 роки тому

    You know I’ve noticed with all things being equal the reverse draw crossbows are often quieter and have less vibration. Have you noticed the same?

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому

      I haven't shot every crossbow out there but it's a smooth shooter for sure

  • @charleschamberlain53
    @charleschamberlain53 Рік тому

    24 years ago I purchased the excalibur exomag the one with the carved limbs not the mag limbs that came out right after I purchased mine but to this day its still in perfect working order even a after a couple dry fires
    Just picked up a mag air and a mag 340
    1 dry fire destroyed the poor mag air 😢
    Excalibur sorted me out

    • @Deathbybunjie
      @Deathbybunjie  Рік тому +1

      Man, they sure don't build them like they used to! That is really neat though that you have one with the carved limbs, as long as you can buy strings you can probably hunt with that crossbow LOL

  • @troyeaster7244
    @troyeaster7244 2 роки тому

    Will it make more sense to shoot a heavier arrow to put more energy into the arrow instead of the limbs?

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому

      Short answer is yes, but theres a lot to it. That "Breaking Limbs" series of videos I did attempts to answer that question. Keep watching those. Some real good discussion of that in Talking woth Bunjie podcast, too. Hope that helps!

  • @jonathanmills9070
    @jonathanmills9070 2 роки тому

    What do you think about the killer instinct crossbows? Hear alot about their limbs breaking. I've got a new one, the fierce 405 but refuse to shoot it until I get some heavier bolts and broadheads.

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому

      They all have limb issues it seems but I do like KI, some neat stuff

  • @jasonscott5043
    @jasonscott5043 2 роки тому

    Most likely, you left the bow strung in a hot car or in direct sunlight long enough to exceed the temperature of which the epoxy can withstand. 99% of delaminating are temperature related. This temperature is usually in the range of 140-180 *f. Eli eve it or not, you can subject a limb to this temp simply by laying the bow in direct sunlight for 15 minutes. Or in a car on a sunny day.

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому

      That would be a category 2 breakage for sure... where did you get this 99% figure?

  • @MichaelCartwright-h9b
    @MichaelCartwright-h9b 9 місяців тому

    Interesting info thanks. Monk man

  • @ericciaramella1768
    @ericciaramella1768 2 роки тому +1

    My flatbow will take a pig with a 100 grain broadhead flying at 150 FPS, so a bolt flying at "just" 300 FPS is PLENTY fast enough.
    I think a 300 FPS crossbow is about the sweet spot between penetration, accuracy and reliability - generally speaking.

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому +1

      I thought same thing but man this year, 400 is the new 300 for me. Not 500 mind you, but 400. So you and I agree in concept but differ on the number.

    • @ericciaramella1768
      @ericciaramella1768 2 роки тому

      @@Deathbybunjie I think so. Would you say 300 FPS is about the sweet spot for a recurve (broadly speaking)?
      Be interesting to learn how far they can push compounds before running into a reliability issue.
      Lastly, while I have you, would you say the additional speed of your compound crossbow has resulted in any changes the in way you hunt?

  • @jeffhays1968
    @jeffhays1968 2 роки тому

    + 500 grain bolts are the answer (somewhat) for this issue.

  • @markpack1111
    @markpack1111 5 місяців тому

    Took a Cow Elk with a grz2 cross bow ..15 yards shot...435 Gr bolt.. Elk went 40 yards...

  • @garyadams2061
    @garyadams2061 2 роки тому

    very nice sir. off topic but ive often wonder why they cant make rope cocker that reduces pull weight more than 50 percent.

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому

      Dr stirrup claims theirs does...two sets of pulleys. It did not seem to help me cock bunjie jr. Lol.

    • @garyadams2061
      @garyadams2061 2 роки тому

      @@Deathbybunjie thank u rich

  • @DrJamesAshfield
    @DrJamesAshfield 3 місяці тому

    8.36 Is this formula correct? the KE is the area under draw force graph so its max draw x draw length / 2 (its halved because its a triangle)

    • @Deathbybunjie
      @Deathbybunjie  3 місяці тому

      At 8:36 it is showing the energy put into the bow. It's not the same as the kinetic energy at launch.

    • @DrJamesAshfield
      @DrJamesAshfield 3 місяці тому

      @@Deathbybunjie I understand that the curve will be a hysteresis curve ie the load curve differs to the unload curve however it is fairly linear and therefore for the purposes of simple calculation- triangular.the formula therefore must be Max Draw x extension x 0.5. To be totally correct its technically the integral of the curve or simply put the area under the draw force curve. The released energy is the area under the unload curve which is transferred to the arrow and bow system.

    • @parapunter
      @parapunter Місяць тому

      @@Deathbybunjie Yes, but you calculated that the energy you put into drawing Bunjie was 211 ft lb. This is out by a factor of two ie. it should be 105.5 ft lb. That would make the efficiency 78.7% which might explain its longevity.

  • @Twinhit
    @Twinhit 9 місяців тому

    String Shock Absorbing string stop/rests instead of hard bar string stop/rests???

    • @Deathbybunjie
      @Deathbybunjie  9 місяців тому

      Might be a good idea but the designs are all different from one model to the next

  • @beorbeorian150
    @beorbeorian150 2 роки тому

    So when kids say they will never use math- well how you going to figure out the efficiency of your crossbow

  • @the-all-american1016
    @the-all-american1016 2 роки тому

    I just bought my first compound X-Bow and I am nervous and scared if something fails

    • @BackyardBroadheads
      @BackyardBroadheads 2 роки тому +1

      Which one did you get?

    • @the-all-american1016
      @the-all-american1016 2 роки тому

      @@BackyardBroadheads the barnett 380 stalker and I am playing with deathbybunjie's calculator and this X-Bow is retaining alot of energy explaining why when I shoot it, it appears to have a recoil a bit

    • @the-all-american1016
      @the-all-american1016 2 роки тому

      @@BackyardBroadheads I would have to shoot a 500 grain bolt to get the left over engery down past 50ft lbs of left over energy

  • @BackyardBroadheads
    @BackyardBroadheads 2 роки тому +1

    62% nice 👍👍👍

  • @douglasborgaro6801
    @douglasborgaro6801 2 роки тому

    Isn’t it true that reverse draw is more efficient?

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому +1

      I don't think it is always, but it does transfer more energy with longer power stroke as opposed to greater draw weight. That's a plus. But there are reverse draws that have really high draw weights too, and that changes the efficiency numbers of course. Good question for sure!

  • @aaronrogers8946
    @aaronrogers8946 2 роки тому

    Which Excalibur do you shoot?

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому +1

      Bunjie is a 2010 Excaliber Axiom. Genevieve's crossbow, Bunjie, Jr., is a Micro Suppressor 355. Thanks for watching!

    • @aaronrogers8946
      @aaronrogers8946 2 роки тому

      @@Deathbybunjie awesome. I just got a matrix 405. Not sure what year it was made in

  • @JohnBruno-yi1ex
    @JohnBruno-yi1ex 2 місяці тому

    Dry fire?

  • @troybizeau5979
    @troybizeau5979 2 роки тому

    i think if they added tear tuff plastic they would not have any more ish with limbs

  • @spidertazzfb47
    @spidertazzfb47 2 роки тому

    Do they have a cross bow, that has a dual power, option? Some times i don't want to kill the target, or a small animal injury ? It's against the law to shoot a gun in the city.

  • @georgeASD
    @georgeASD Рік тому

    I have to point out something about efficiency, l have an old Barnett Commando which by today standards is very slow, but it can achieve around 210fps with a 125lb prod or bow using 355 grain bolts, more than enough to hunt with, it can achieve the same penetration as my recurve 45lb bow. So really beyond that, the speed gain is minimal compared to the stress and noice increase as you go up in draw weight. So lets say 210fps-125lb - 305fps-280lb make the math about speed gains vs wasted energy, My point: there is a limit to what the gear can do, and the public need to understand that, no matter how heavy you get, after around 150lb you are just wasting energy, a lot of it, and it often turns into vibration/noice, is it worthy to get all that extra stress and noice for just a few fps? thats up to you to decide, for me it isnt, my crossbow is very quiet since there is very little wasted energy.

    • @Deathbybunjie
      @Deathbybunjie  Рік тому +1

      Run the calculator, and I bet there's more wasted energy there than you think. Keep in mind, also, that with my deathstalker and it's 150 lb draw weight I can get 400 ft per second with a 400 grain arrow. I'm around 380 with a 442 grain arrow, and well over 60% efficiency. I'm not telling you that to brag or anything, but just a tell you that it can be done. My next video talks about this. Crossbow designs have come an awful long way, and I can also tell you from personal experience that there is a world of difference between 260 ft per second on the Original Bunjie with heavy arrows and 400 ft per second with stock arrows on a more modern crossbow. There's no comparison. One of them is through the deer at 30 yards before they can blink. For all intents and purposes it turns 20 yards into 30. It means a pass through as opposed to a deer running off with an arrow half the time, or a spine shot. For me, that's a big deal!

    • @georgeASD
      @georgeASD Рік тому

      @@Deathbybunjie indeed, l play airsoft, not archery related, but l see the difference between 280fps entry guns and the 350-420fps pro guns. My point is that not everything is draw weight, there is also a matter of limb geometry and materials used to get the best out of your set up, but even then, there is a limit to what the gear can do and those 400+fps comes at the expense of wear on the limbs, thats why faster crossbows tend to have more limb snaping issues. Hunting with slower setups is possible but it requires more patience and closer ranges, there is a world of difference between 210 fps and 400 indeed.

    • @Deathbybunjie
      @Deathbybunjie  Рік тому

      @@georgeASD yes, you do make a point that I totally agree with, and that is certainly it can be done with slower equipment, keep in mind this channel is named after my 2010 excaliber axiom, a crossbow that went with me to Maryland this year and killed four deer, at 260 ft per second LOL. So I totally get it!

  • @jasontsang2232
    @jasontsang2232 4 місяці тому

    I find crossbows are overbuilt and are not as efficient as laminated regular bow limbs. I think I can produce the same amount of energy as a 150 pound recurve crossbow with a 55 pound laminate bow drawing 30 inches

    • @Deathbybunjie
      @Deathbybunjie  4 місяці тому

      A 150 lb recurve is not a modern crossbow 😆 you can't touch modern crossbow energy with a vertical bow. But I agree crossbows are generally inefficient in comparison. We did a whole series on that 2 or 3 years ago. Some are better than others, but they not as efficient as compounds for sure.

  • @oldgrumpyhunter
    @oldgrumpyhunter 2 роки тому +1

    The Very First!

  • @GrumpyGenXGramps
    @GrumpyGenXGramps 2 роки тому

    Chinese manufacturing! Outsourcing parts or even complete bows over in China is a big reason also!

  • @neabowhunters8107
    @neabowhunters8107 2 роки тому

    Mag 340
    405 grain arrow 327fps 32.88% efficient

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому +1

      Yeah Bunjie hears ya...but next 2 videos should help up that a bit haha

    • @neabowhunters8107
      @neabowhunters8107 2 роки тому

      @@Deathbybunjie
      I’m seeing where compound crossbows are more efficient. I also tried it with a 500gr arrow at 302fps and the efficiency went down to 31%

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому +1

      @NEA Bow Hunters yeah...you're touching on next week's video lol...added weight improves efficiency but has its limits. But I'm surprised that early, I figured 500 be good still

    • @neabowhunters8107
      @neabowhunters8107 2 роки тому

      @@Deathbybunjie
      Yes sir that’s actual speed from a fellow Excalibur member. So I’m really ready to see what arrow weight is good

    • @neabowhunters8107
      @neabowhunters8107 2 роки тому

      @@Deathbybunjie great video as always

  • @Koopwins
    @Koopwins Рік тому

    Good thing it happened in the yard and not in Maryland

  • @douglasborgaro6801
    @douglasborgaro6801 Рік тому

    Interesting issue!
    I have an early model Ravin R10. You know how narrow that can be. It of course is conventional draw, not reverse.
    I believe the draw weight is over 250 lbs. that R10 has not had a single issue in 5 years. I’ve taken deer with it and it is in like new condition.
    I hear stories of people having the blown limbs, strings and cables. Never even the slightest concern of wear on the R10.
    What to make of this?

    • @Deathbybunjie
      @Deathbybunjie  Рік тому

      That is definitely one of their top models, that's for sure! Apparently it is able to handle any leftover energy, shot after shot!

  • @donwilson350
    @donwilson350 2 роки тому

    You know what I don't believe the fatigue thing really for 1 minute Rick because they shoot the crossbow limbs hundreds and hundreds and hundreds of times before they even put them out on the market for us to buy and I know your daughter hadn't Shot Heard hundreds and hundreds and hundreds of times so I just think it all boils down to is how well the live is made some Lim might have more glue than others some companies go with cheaper products and they just break

    • @Deathbybunjie
      @Deathbybunjie  2 роки тому

      A great point...the # of shots thing will be a BIG part of the final episode...ep 4 in two weeks, you'll love it!

  • @danarichards6517
    @danarichards6517 Рік тому

    I have had 4 limbs break on my Excalibur micro Excalibur limbs will break.

    • @Deathbybunjie
      @Deathbybunjie  Рік тому

      That's crazy, I'm not a big fan of that that's for sure

  • @ronaldmaranto368
    @ronaldmaranto368 Рік тому

    My Excalibur Exomag and Exomax last forever.They can't improve on these 2.

    • @Deathbybunjie
      @Deathbybunjie  Рік тому

      I hear that, Ol' Bunjie, too, is a perfect crossbow!