This was fascinating and makes you think. Work smarter, not harder... if you can produce faster speeds with less mechanical effort, why wouldn’t you? Can this be taken further?
Definitely a conversation in the archery community that needs to be emphasized, more draw certainly doesn't always equal faster. Great lesson to all the other Boyer's and archer out there. Great content and a great lesson, thanks man 👍
Deflex from handle improves angles when combined to outer reflex. This is why for the same overall amount of reflex a rd bow is a little faster than a one only reflexed. Deflex together with a more aggressive reflex beats moderate reflex (with no deflex from handle; same overall reflex) just because there is a gain on the late draw, whereas the loss in the early draw is close to nothing. But for the same overall reflex I think the rd bow will win with only about 2% higher speed. On the other hand, of course that if you remove deflex from handle and keep the outer reflex you will get a little more speed. Just because overall reflex is significantly higher, so the advantage on early draw tends to beat the disadvantage on late draw. But just removing the deflex from handle makes a bow that is not anymore comparable to the previous. Because of materials fatique and ease of bracing I do think we should think in terms of same overall degree of reflex. Of course, rd works very well together with stiff, narrow outers (for the same overall degree of reflex, maybe even better compared to a simple reflexed bow).
This is the problem I've been working on for about a year now in my PVC bows. Why are some of my light draw bows so much faster than the heavy ones. I'm in my seventies, too, and I love shooting my light weight bows. This, indeed, addresses my current interests. It's encouraging to see this.
Mind-blowing. There are similar eccentricities to bodysurfing hand plane building. The fact most people don't care about weird ways to go faster rings a bell. I wonder how much faster that arrow would go if you stole ideas from the makers of supercavitating sub-surface rifle rounds? Apparently, an extension of sub-caliber diameter with a flight medium breaking tip can be tuned to turn the slipstream off the extension into a diameter just over the OD of whatever object is flying behind it. Kinda like some expanding broadheads, but with the plunger tuned in a wind tunnel. And also, I've never seen an arrow with surface stippling or other drag reducing efforts, like Tom Morey's "Swizzle" boards. Hope that trips you out Opa, your proof of design over draw weight is highly motivating.
Native stone points are effectively 'stippled'. I've used stippling on pistons and combustion chambers to control air movement for a more efficient flame front and thus more power. Golf balls are very obviously stippled for the same exact reason you'd want/need in archery. No reason you couldn't do so on the arrow shaft I'd guess. I do wonder though if the effort would be worth the speed gain. I mean, I'm sure there would be speed gain...but would it even be measurable? I bet for flight archery guys it might be...but for bow hunters? Probably not. Interesting concept.
Bow limbs can only return so fast . Asian archers figured out long long ago that shorter limbs were faster but could not transfer that energy to the arrow due to a very shallow string angle so they made short fast and very strong limbs and put ears called siyhas at the end of the bow limbs. Those limbs however can only return so fast so draw weight has little effect on arrow velocity however a heavier draw weight does allow you to cast a heavier arrow one which carries enough momentum to penetrate armor and bone .
For a senior guy with a full head of white hair(wisdom), you don't get any cooler than this. Opa is one cool dude for his age. I absolutely love watching him release those arrows. It's so clear amd crisp. Doesn't Opa have a channel where he does archery?
I don’t know if anyone else has said this, but these bow designs remind me of the holmgard (hope I’m spelling that right) style of bows, but with reflex added. Really awesome bows!
Actually, this would be closer to a Mollegabet. It is confusing because of their similar origins, but the bows with narrow and stiff lever tips are Mollegabet bows, whereas Holmegaard bows are more similar to a regular longbow with slightly stiff outers
Holy moly. Look at that arrow leave that bow. Wowzer. I love it. You guys are onto something. It makes sense. I also thought about this before. But I just let it go.
Adding deflex in the handle allows sinew backed and even selfbows to remain strung for a longer time without taking set. Also puts the limbs in a forward facing position making the bow more efficient. Gullwing bows of the Northern plains are the perfect example. They're much more efficient than any longbow. A good longbow will be able to shoot 172 fps at 28" with 10 gpp a gullwing bow can do that only drawn to 22"
Was in the final stages of making a bow with a piece of honey locust. Had the thing just about where I wanted it. Was steaming out a slight twist and got side tracked. Ran out of steam and totally dried the thing out. Sad day for me. Haven't had the opportunity to try my hand at it since.
Amazing! This is exactly what I've been thinking about. If you can get a fast arrow off the string, why make it harder to draw? Can't wait to start working on my own designs, thanks so much for the inspiration. One idea of how it's more efficient, could be that the ends of the stave being inflexible, mean the energy is being generated almost entirely by the near-handle part of the limbs. Making it more like a very short bow just with some 'extenders' that make the draw length reasonable. This makes the inertia and the distance to return to unbent lower, thus raising the efficiency? Perhaps.
That's what I'm thinking as well, the main design difference I saw was the thicker ends of the limbs from back to belly, and thinner from left to right when compared to the area between grip to about mid limb
I've been wanting to buy one of his bows for two years now. For the longest time there weren't any available on his website, and now his website is down every time I try to visit it. Any help on how and where to buy an Opa Speed Bow?
Hello dudes excellent video, and it's something I'm very interested in, i think those widened or thickened tips act like a weight foward hammer or an ancient Greek kopis sword or kukri. giving it more weight in it's power stroke. where can i purchase your books?
The stiffness allows it to be a lever but their is more to it than that as in proper angle of tip, length, etc..and each is different depending on what you want the bow to do..if building heavy bows than the design would be different....thank you for watching and thank you for the kind comment my friend. You can find the authors book on Amazon Lure of the lightdraw bow. Keep in mind its not a how to book but more a story or series of essays on achieving ultimate performance when making bows
Wow I'm watching and analyzing this video over and over and I'm intrigued. Imagine a khatra is added when releasing that arrow. That arrow will be thrown even faster. This is great work. I'm gonna try this design by doing a cheap build and see how well it does. The design makes sense for speed. That's why rhe Turkish bows are the best in the world because of how much it's recurved. Also I think the deflex is just to make the bow a bit forgiving. I think that's the only function it serves.
This was interesting. Been making longbows for a while and recently started making asiatic bows with siyhas and was thinking about a longbow with integral siyha just yesterday and your video pops up. Nothing new under the sun as the big book says
Here - I’m interested in same thing,, I am not a hunter and never would bow hunt, I like roving and general shooting , and had a shoulder injury which no means I can’t pull anything over 50 ever again - but let me say something, just the shape, just the pure shape and form of this bow tells me it is extremely efficient and probably tillered to within an inch of its life. If ever there was a case of form displaying function this is it, look at the bend distribution of those limbs, string angle and cast. Very interesting, I’m making a little maple sinew bow and while it is deflex/reflex at 40” long, I have enough sinew and wood left that I can now streamline it to get that shape and form I’m looking for, and have it where I can shoot it without huge physical strain. Dan
I get the idea behind all of this but local state laws require a minimum pull weight for large game (I think 40lbs) so I'm still stuck looking at that for hunting.
Beautiful bows❤, if I have to hunt i would definately use my 50pounder recurve with a 500gr arrow setup, but I also have a 70pounder for horses and such😂
Well this was quite fascinating. I wonder what it is about these bows as apposed to a normal bow that makes them faster. May have to check that book out. Now imagine adding an Instant legolas to this bow.... xD
what i want to know is if nobody looked at the captions after they typed them and saw that when you typw white text on white background it becomes a bit difficult to read.
nice drastic reflex/deflex..yup sold all my 50 and 55 pounds. now i shoot 30-35 and 40 0n a good day.excellent idea with lighter weight fast bows. about time..TU
What are his bows made of it? It kind of looks like a self bow inlayed with fiberglass. Thin tips and relfex make a fast shooting bow but I also think recurve bows with short static recurves do as well. But I am not sure which outperforms the other.
Super Super interesting. I've got some osage begging to be turned into a bow, but I decided to hold off the moment I discovered Mead Bows, and now this, to do more research on design.
Hello Opa, Loved to see your video about your bows. I'm interested in your kind of view so I hope I can enjoy your skills much more. Btw, Where are you from originally ?? I heard they call a grand dad Opa in the Netherlands ?? Is that correct ?
Bow efficiency can be measured in a mathematical way, you can provide a force-draw length curve for your bow and arrow weight+speed, then the efficiency can readily be calculated. Something like this www.atarn.org/islamic/Performance/Performance_of_Turkish_bows.htm.
I did years ago, but you can only take it so far before there is no return. I enjoyed it for a little while then moved on. I agree most heavy bows are inefficient.
How do I order a bow from u I have recurve bow 5o pounds two types I seen your video just now the long bow i live in Winnipeg Manitoba my name is Adolf
Oh man. I got some ideas. The typical bow has a draw length of 30 inch. To max speed and efficiency you would also need to extend the draw length. I thought of two ways to do this. Either a bow shot by feet ( which the world record of longest target shot was done) or by a rail or tube around the string and arrow that extends beyond 30 inches. Similar to crossbow. But cross bows usually only have 13 inch power stroke. Take that to its extreme.
my best advice from shooting bows from 1954 to today is,,, for each arrow you shoot,, pull your bow with the other arm,,, trust me,,, it will keep your back balanced and you will last longer with more power for the later years,,, ole fart jimmy
You can tell a lot about a bow when you hear how it sounds. I too have not found a partner in crime yet. I'm from Idaho and used woods from Oregon, Nevada, and Idaho.
This is fascinating, I love how you’re incorporating science into this. Perhaps speaking to a physicist would help you to build on your findings - if you already haven’t. Great video! Keep it up.
I’m. curious as to why you don’t compare apples to apples ... ie, same weight bows, length bows, same weight arrows, and use a shooting machine? Take the human factor out of the equation as much as possible... some guys are really good at shooting for a chronograph... don’t leave room for doubt...
Watch the whole video through please, we used a 38 lb Opa bow to shoot same weight (500 grains) arrow faster than a 51 lb bow. So in this case there is no need to shoot same weight bow..while there I did test a 50 lb Opa bow and it shot 500 grain arrow around 200 fps which is nearly 30 fps faster than the 51 lb bow. Machines dont test a race cars speed on the track or open road, a race car driver does. This proves what is possible in humans hands..My goal here is to demonstrate what the BOW is truly capable of…in capable hands. I am an advocate for the bow. Some people shoot with a terrible release and have slower speeds, some use machines and get certain speeds, and some people shoot with a real clean release and get higher speeds..bottom line is it's all the same bow....which speed result would you use to market to human archers wanting to know how fast the bow is? I've never had anyone ask me what's the speed out of a machine, or how slow is the bow. appreciate the comment Jason hopefully this opens your mind a little to how real speed testing should be done.
I'm interested in increasing efficiency of bows as well but one of the main reasons why it's become a rule of thumb that a heavier draw weight bow increases arrow speed, all other things being equal, is that the materials themselves are able to overcome their inertia much better at heavier draw weights. A 50# bow can overcome it's own inertia much better than a 20# bow as one example. A heavier bow is also a more stable bow.
I appreciate the comment but sorry that is wrong. I've tested this in all aspects over the last 6 years. If I could not make very efficient light draw bows I would still shoot, and hunt with a heavier bow. I have used under 40lbs successfully for all needs and many others have as well. It's simply all in the design and the use of the materials.
@@MeadLongbows It's not wrong. Compare a 55# bow shooting a 550 grain arrow to a 20# bow shooting a 550 grain arrow and get back to me with the results. The ability for a bow to overcome it's own weight efficiently is crucial. This is why heavy warbows can shoot arrows that weigh 10gpp over 200fps and these are selfbows of which the design and material of the bow (wood) has been used for thousands of years successfully.
@@MeadLongbows The reason why some of the bows you showed in your video are faster than others is because they have more preload due to having reflex and/or recurve in the tips which increases the strain placed on the bow prior to even drawing it. While such a bow will be more efficient, it will require more perceived muscular effort to draw it back and it will not have as smooth of a draw of a bow that has little to no preload up front. Howard Hill, one of the best archers of the modern era, even favored a bow with a little bit of strong follow because they are smoother to draw back from start to finish. This is why I favor flatbows and longbows with no reflex or recurve over bows with tons of reflex and/or recurves. They are smoother to draw and shoot, even if the draw weight is higher because the early draw is much smoother due to the lack of heavy preload.
@@johnbloom1109 I see what your trying to do here. Look dont take this out of context and plant seeds , it is clearly possible to build more efficient bows of lighter draw to accomplish same task as a heavier less efficient bow. People hunt with bows way under 40 all the time. Both he and I have also made longbows and flatbow just as fast. I just prefer the smaller bow with siyahs because of the advantages it offers me for my needs. And I do not have any issues with accuracy or it being any less smooth or whatever you mentioned. I have made close to 2000 bows more than 500 being self bows of different designs, if I didn't see an advantage in using the bows I make now I would not make them. Simple as that.
love shooting my bow nothing like it would love a bow like yours it looks super, unfortunately, have to wait a couple of more years for my pension to get a new bow that is a great bow been disabled I can shoot pretty good and I am on a real low benefit as my disability status was revoked now I don't get anything my wife treats me but i can't afford to take anything from her we just about have enough for the basics to live on lost it because the government needed money for immigrants that they brought in so they created a system to rob the disabled in the UK they turned us into criminals for claiming our benefits said we were not disabled enough it has been seven years since I had anything just have TWO YEARS before I can have a new car and a new bow looking forward to it i do have a couple of half-decent bows so I am ok did like what i saw from you would love to get a stalker stick bow as well have a good life bye
The composite bows of Middle East and Asia are the most advance machine of ancient times. English long bow are just as powerful; but, it’s “just a stick” while composite bow ended went a strange and interesting evolution. The results is a lamination of wood, sinew, horn and collagen glue. A reflex-deflex evolved of various aggressiveness were tested. A siyah of varying aggressiveness were tested The siyah help reduce stacking, efficiently converting more muscle into speed and power. Stacking waste energy....short bows with straight limbs are less efficient, which resulted in LONG bows. Reflex Deflex limbs is the only evolutionary path to make bows more efficient, specially shorter bows. If I may, you’re looking in the wrong social circles if you’re trying to research reflex deflex. You need to get into Asian archery. I know people who eat and sleep bows and especially Asian bows. Maybe it’s why all modern Olympic bows have the a profile of Asian bows. Good luck 👍🏼👍🏼👍🏼
This was fascinating and makes you think. Work smarter, not harder... if you can produce faster speeds with less mechanical effort, why wouldn’t you? Can this be taken further?
Thanks Mike! and yes it can stay tuned...
Definitely a conversation in the archery community that needs to be emphasized, more draw certainly doesn't always equal faster. Great lesson to all the other Boyer's and archer out there. Great content and a great lesson, thanks man 👍
Deflex from handle improves angles when combined to outer reflex. This is why for the same overall amount of reflex a rd bow is a little faster than a one only reflexed. Deflex together with a more aggressive reflex beats moderate reflex (with no deflex from handle; same overall reflex) just because there is a gain on the late draw, whereas the loss in the early draw is close to nothing. But for the same overall reflex I think the rd bow will win with only about 2% higher speed. On the other hand, of course that if you remove deflex from handle and keep the outer reflex you will get a little more speed. Just because overall reflex is significantly higher, so the advantage on early draw tends to beat the disadvantage on late draw. But just removing the deflex from handle makes a bow that is not anymore comparable to the previous. Because of materials fatique and ease of bracing I do think we should think in terms of same overall degree of reflex. Of course, rd works very well together with stiff, narrow outers (for the same overall degree of reflex, maybe even better compared to a simple reflexed bow).
Looks like a modern version of a 5000 year old mollegabet. beautiful!
This is the problem I've been working on for about a year now in my PVC bows. Why are some of my light draw bows so much faster than the heavy ones. I'm in my seventies, too, and I love shooting my light weight bows. This, indeed, addresses my current interests. It's encouraging to see this.
I’m very happy to be a part of your adventure let me know if I can help you in the future the guy at Mead bows is a nice guy I love his bamboo bows
Mind-blowing. There are similar eccentricities to bodysurfing hand plane building. The fact most people don't care about weird ways to go faster rings a bell. I wonder how much faster that arrow would go if you stole ideas from the makers of supercavitating sub-surface rifle rounds? Apparently, an extension of sub-caliber diameter with a flight medium breaking tip can be tuned to turn the slipstream off the extension into a diameter just over the OD of whatever object is flying behind it. Kinda like some expanding broadheads, but with the plunger tuned in a wind tunnel.
And also, I've never seen an arrow with surface stippling or other drag reducing efforts, like Tom Morey's "Swizzle" boards.
Hope that trips you out Opa, your proof of design over draw weight is highly motivating.
Native stone points are effectively 'stippled'. I've used stippling on pistons and combustion chambers to control air movement for a more efficient flame front and thus more power. Golf balls are very obviously stippled for the same exact reason you'd want/need in archery. No reason you couldn't do so on the arrow shaft I'd guess. I do wonder though if the effort would be worth the speed gain. I mean, I'm sure there would be speed gain...but would it even be measurable? I bet for flight archery guys it might be...but for bow hunters? Probably not.
Interesting concept.
Bow limbs can only return so fast . Asian archers figured out long long ago that shorter limbs were faster but could not transfer that energy to the arrow due to a very shallow string angle so they made short fast and very strong limbs and put ears called siyhas at the end of the bow limbs. Those limbs however can only return so fast so draw weight has little effect on arrow velocity however a heavier draw weight does allow you to cast a heavier arrow one which carries enough momentum to penetrate armor and bone .
For a senior guy with a full head of white hair(wisdom), you don't get any cooler than this. Opa is one cool dude for his age. I absolutely love watching him release those arrows. It's so clear amd crisp. Doesn't Opa have a channel where he does archery?
Please post more information from Opa on how to make those bows.
I don’t know if anyone else has said this, but these bow designs remind me of the holmgard (hope I’m spelling that right) style of bows, but with reflex added. Really awesome bows!
Holmegaard. Yes, I agree.
Actually, this would be closer to a Mollegabet. It is confusing because of their similar origins, but the bows with narrow and stiff lever tips are Mollegabet bows, whereas Holmegaard bows are more similar to a regular longbow with slightly stiff outers
Holy moly. Look at that arrow leave that bow. Wowzer. I love it. You guys are onto something. It makes sense. I also thought about this before. But I just let it go.
What a cool guy! Super interesting topic. Will defenetly check out the book, thanks for sharing!
Does arrow pass with have anything to do with arrow speed? Would a fat arrow pass slow down the arrow a tiny bit
Adding deflex in the handle allows sinew backed and even selfbows to remain strung for a longer time without taking set. Also puts the limbs in a forward facing position making the bow more efficient. Gullwing bows of the Northern plains are the perfect example. They're much more efficient than any longbow. A good longbow will be able to shoot 172 fps at 28" with 10 gpp a gullwing bow can do that only drawn to 22"
Hey Dave does ur “DIY bamboo bow kit already tillered” require a backing / come with backing
The website doesn't seem to work. It sends me to Amazon and not to an Opa bow. I would love to learn more.
Was in the final stages of making a bow with a piece of honey locust. Had the thing just about where I wanted it. Was steaming out a slight twist and got side tracked. Ran out of steam and totally dried the thing out. Sad day for me. Haven't had the opportunity to try my hand at it since.
Dave I see opa bows got inspiration from your bow design. And they are fast! Great video as always
Awesome video! its all about efficiency of design
Amazing! This is exactly what I've been thinking about. If you can get a fast arrow off the string, why make it harder to draw? Can't wait to start working on my own designs, thanks so much for the inspiration.
One idea of how it's more efficient, could be that the ends of the stave being inflexible, mean the energy is being generated almost entirely by the near-handle part of the limbs. Making it more like a very short bow just with some 'extenders' that make the draw length reasonable. This makes the inertia and the distance to return to unbent lower, thus raising the efficiency? Perhaps.
That's what I'm thinking as well, the main design difference I saw was the thicker ends of the limbs from back to belly, and thinner from left to right when compared to the area between grip to about mid limb
I've been wanting to buy one of his bows for two years now. For the longest time there weren't any available on his website, and now his website is down every time I try to visit it. Any help on how and where to buy an Opa Speed Bow?
This was super interesting! I tried to find "Mr. Opa", but couldn't find him anywhere. Is he still around? Thanks!
Thank you sorry he has passed on several years ago
@@MeadLongbows I thought so. Well, he seemed like such a great guy. Are you still pursuing the "low weight, fast arrow"?
Very interesting next step more efficient arrows !
Hello dudes excellent video, and it's something I'm very interested in, i think those widened or thickened tips act like a weight foward hammer or an ancient Greek kopis sword or kukri.
giving it more weight in it's power stroke.
where can i purchase your books?
The stiffness allows it to be a lever but their is more to it than that as in proper angle of tip, length, etc..and each is different depending on what you want the bow to do..if building heavy bows than the design would be different....thank you for watching and thank you for the kind comment my friend. You can find the authors book on Amazon Lure of the lightdraw bow. Keep in mind its not a how to book but more a story or series of essays on achieving ultimate performance when making bows
When will you have more available?
Soon. There is one left on meadlongbows.com if interested thank you
I want one of those bows maybe 2 how can I get them ?????
The perfect example that less is more 👍🏻.
Can this bows shoot heavy arrows?
Thx and of course that’s the main point of this video thanks for watching 👊
@@MeadLongbows Can they shoot like heavy medieval arrows (100 grams) at short distances?
nice bow i like the way how the bow recurve i wish have one of your bow sir, i only make bamboo bow but not quite good enough
Woah. I got goosebumps watching this video.
Wow I'm watching and analyzing this video over and over and I'm intrigued. Imagine a khatra is added when releasing that arrow. That arrow will be thrown even faster. This is great work. I'm gonna try this design by doing a cheap build and see how well it does. The design makes sense for speed. That's why rhe Turkish bows are the best in the world because of how much it's recurved. Also I think the deflex is just to make the bow a bit forgiving. I think that's the only function it serves.
This was interesting. Been making longbows for a while and recently started making asiatic bows with siyhas and was thinking about a longbow with integral siyha just yesterday and your video pops up. Nothing new under the sun as the big book says
Here - I’m interested in same thing,, I am not a hunter and never would bow hunt, I like roving and general shooting , and had a shoulder injury which no means I can’t pull anything over 50 ever again - but let me say something, just the shape, just the pure shape and form of this bow tells me it is extremely efficient and probably tillered to within an inch of its life. If ever there was a case of form displaying function this is it, look at the bend distribution of those limbs, string angle and cast. Very interesting, I’m making a little maple sinew bow and while it is deflex/reflex at 40” long, I have enough sinew and wood left that I can now streamline it to get that shape and form I’m looking for, and have it where I can shoot it without huge physical strain.
Dan
I like your dedication.
This is great. Something to think about it 👍
I get the idea behind all of this but local state laws require a minimum pull weight for large game (I think 40lbs) so I'm still stuck looking at that for hunting.
Well it dosnt hurt to have the fastest 40lb bow ; )
Beautiful bows❤, if I have to hunt i would definately use my 50pounder recurve with a 500gr arrow setup, but I also have a 70pounder for horses and such😂
Amazing work
It would be great to get these speeds out of a light weight selfbow.
Well this was quite fascinating. I wonder what it is about these bows as apposed to a normal bow that makes them faster. May have to check that book out.
Now imagine adding an Instant legolas to this bow.... xD
Ah! When Eastern meets Western bowmaking, some incredible things happen...
what i want to know is if nobody looked at the captions after they typed them and saw that when you typw white text on white background it becomes a bit difficult to read.
I just finished my first successful bow, it is over 50# and I noticed right away it shoots a bit slower than my 40# modern recurve
Yes I want your book
nice drastic reflex/deflex..yup sold all my 50 and 55 pounds. now i shoot 30-35 and 40 0n a good day.excellent idea with lighter weight fast bows. about time..TU
What are his bows made of it? It kind of looks like a self bow inlayed with fiberglass. Thin tips and relfex make a fast shooting bow but I also think recurve bows with short static recurves do as well. But I am not sure which outperforms the other.
How can i buy your bow..?
This is the video I've been looking for. The whole more power equals more speed never made sense to me.
How much the price?
Super Super interesting. I've got some osage begging to be turned into a bow, but I decided to hold off the moment I discovered Mead Bows, and now this, to do more research on design.
Hello Opa,
Loved to see your video about your bows.
I'm interested in your kind of view so I hope I can enjoy your skills much more.
Btw,
Where are you from originally ??
I heard they call a grand dad Opa in the Netherlands ??
Is that correct ?
Yes that's correct ;)
@@rubenv3026 is he Dutch ??
@@irishcoffee6894 if you're talking about the man in the video, I don't know. If you're talking about me, I'm from Belgium (Flanders) :)
Lovely bow♥️♥️♥️♥️♥️
Seu arco e muito rápido muito bom
Beatiful bow
Great video Dave. Excellent explanation of the "physics" of bow design.
Bow efficiency can be measured in a mathematical way, you can provide a force-draw length curve for your bow and arrow weight+speed, then the efficiency can readily be calculated. Something like this www.atarn.org/islamic/Performance/Performance_of_Turkish_bows.htm.
You should try making some efficient heavy bows. Many of the heavy traditional bows are terribly inefficient, these days.
I did years ago, but you can only take it so far before there is no return. I enjoyed it for a little while then moved on. I agree most heavy bows are inefficient.
All Sold Out?
Yes sorry
Great video!
Pure genius!
How do I order a bow from u I have recurve bow 5o pounds two types I seen your video just now the long bow i live in Winnipeg Manitoba my name is Adolf
Email me meadlongbows@gmail.com
As an over 60 guy with a heart condition this is an interesting topic.
Oh man. I got some ideas. The typical bow has a draw length of 30 inch.
To max speed and efficiency you would also need to extend the draw length. I thought of two ways to do this. Either a bow shot by feet ( which the world record of longest target shot was done) or by a rail or tube around the string and arrow that extends beyond 30 inches. Similar to crossbow. But cross bows usually only have 13 inch power stroke. Take that to its extreme.
BALLLIIISSSSTTTTTAAAAAAAA!!!!!!!!
1:34 imma guess aerodynamic tips?
OK 👍
Just cant believe it
I want a bow
I want one, but can’t help but see similarities in ancient asian bows
my best advice from shooting bows from 1954 to today is,,, for each arrow you shoot,, pull your bow with the other arm,,, trust me,,, it will keep your back balanced and you will last longer with more power for the later years,,, ole fart jimmy
Interesting, so your saying to work out the other side so you build muscle evenly?
yep
@@jake4194
This is some Grade A marketing
You can tell a lot about a bow when you hear how it sounds. I too have not found a partner in crime yet. I'm from Idaho and used woods from Oregon, Nevada, and Idaho.
يا حبيبي محمد عليه الصلاة والسلام باقي حي ينصف في جهدي الإيجابي هذا ؟؟؟
I'll help him.
i thought "Opa passed away
👍
This is fascinating, I love how you’re incorporating science into this. Perhaps speaking to a physicist would help you to build on your findings - if you already haven’t. Great video! Keep it up.
Me das un arcos 5 señor
I’m. curious as to why you don’t compare apples to apples ... ie, same weight bows, length bows, same weight arrows, and use a shooting machine?
Take the human factor out of the equation as much as possible... some guys are really good at shooting for a chronograph... don’t leave room for doubt...
Watch the whole video through please, we used a 38 lb Opa bow to shoot same weight (500 grains) arrow faster than a 51 lb bow. So in this case there is no need to shoot same weight bow..while there I did test a 50 lb Opa bow and it shot 500 grain arrow around 200 fps which is nearly 30 fps faster than the 51 lb bow. Machines dont test a race cars speed on the track or open road, a race car driver does. This proves what is possible in humans hands..My goal here is to demonstrate what the BOW is truly capable of…in capable hands. I am an advocate for the bow. Some people shoot with a terrible release and have slower speeds, some use machines and get certain speeds, and some people shoot with a real clean release and get higher speeds..bottom line is it's all the same bow....which speed result would you use to market to human archers wanting to know how fast the bow is? I've never had anyone ask me what's the speed out of a machine, or how slow is the bow. appreciate the comment Jason hopefully this opens your mind a little to how real speed testing should be done.
I'm interested in increasing efficiency of bows as well but one of the main reasons why it's become a rule of thumb that a heavier draw weight bow increases arrow speed, all other things being equal, is that the materials themselves are able to overcome their inertia much better at heavier draw weights. A 50# bow can overcome it's own inertia much better than a 20# bow as one example. A heavier bow is also a more stable bow.
I appreciate the comment but sorry that is wrong. I've tested this in all aspects over the last 6 years. If I could not make very efficient light draw bows I would still shoot, and hunt with a heavier bow. I have used under 40lbs successfully for all needs and many others have as well. It's simply all in the design and the use of the materials.
@@MeadLongbows It's not wrong. Compare a 55# bow shooting a 550 grain arrow to a 20# bow shooting a 550 grain arrow and get back to me with the results. The ability for a bow to overcome it's own weight efficiently is crucial. This is why heavy warbows can shoot arrows that weigh 10gpp over 200fps and these are selfbows of which the design and material of the bow (wood) has been used for thousands of years successfully.
@@johnbloom1109 haha come on man dont waste my time. Come with a real argument and I am happy to debate. Not this nonsense go bother someone else
@@MeadLongbows The reason why some of the bows you showed in your video are faster than others is because they have more preload due to having reflex and/or recurve in the tips which increases the strain placed on the bow prior to even drawing it. While such a bow will be more efficient, it will require more perceived muscular effort to draw it back and it will not have as smooth of a draw of a bow that has little to no preload up front.
Howard Hill, one of the best archers of the modern era, even favored a bow with a little bit of strong follow because they are smoother to draw back from start to finish. This is why I favor flatbows and longbows with no reflex or recurve over bows with tons of reflex and/or recurves. They are smoother to draw and shoot, even if the draw weight is higher because the early draw is much smoother due to the lack of heavy preload.
@@johnbloom1109 I see what your trying to do here. Look dont take this out of context and plant seeds , it is clearly possible to build more efficient bows of lighter draw to accomplish same task as a heavier less efficient bow. People hunt with bows way under 40 all the time. Both he and I have also made longbows and flatbow just as fast. I just prefer the smaller bow with siyahs because of the advantages it offers me for my needs. And I do not have any issues with accuracy or it being any less smooth or whatever you mentioned. I have made close to 2000 bows more than 500 being self bows of different designs, if I didn't see an advantage in using the bows I make now I would not make them. Simple as that.
Nice video but you didn't actually show us more in depth technical information how to actually make one .
I mean, that's what the book's for. Cheap ass
I just purchased and read the book. It doesn't show any more than this video
@@lawrencekalapus9566 Oh, well thank you for the warning I suppose.
@@todo9633 so who's the cheap ass now?
love shooting my bow nothing like it would love a bow like yours it looks super, unfortunately, have to wait a couple of more years for my pension to get a new bow that is a great bow been disabled I can shoot pretty good and I am on a real low benefit as my disability status was revoked now I don't get anything my wife treats me but i can't afford to take anything from her we just about have enough for the basics to live on lost it because the government needed money for immigrants that they brought in so they created a system to rob the disabled in the UK they turned us into criminals for claiming our benefits said we were not disabled enough it has been seven years since I had anything just have TWO YEARS before I can have a new car and a new bow looking forward to it i do have a couple of half-decent bows so I am ok did like what i saw from you would love to get a stalker stick bow as well have a good life bye
in short siyahs...
The composite bows of Middle East and Asia are the most advance machine of ancient times. English long bow are just as powerful; but, it’s “just a stick” while composite bow ended went a strange and interesting evolution. The results is a lamination of wood, sinew, horn and collagen glue. A reflex-deflex evolved of various aggressiveness were tested. A siyah of varying aggressiveness were tested
The siyah help reduce stacking, efficiently converting more muscle into speed and power. Stacking waste energy....short bows with straight limbs are less efficient, which resulted in LONG bows. Reflex Deflex limbs is the only evolutionary path to make bows more efficient, specially shorter bows.
If I may, you’re looking in the wrong social circles if you’re trying to research reflex deflex. You need to get into Asian archery. I know people who eat and sleep bows and especially Asian bows.
Maybe it’s why all modern Olympic bows have the a profile of Asian bows.
Good luck 👍🏼👍🏼👍🏼
It really is amazing how advanced those bows are, and they have had them since ancient times!
Old man: "What deos a deflects do for a bow?"
Me: many things, the first one is to make it look nice!