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Self bows with horn bow stats

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BowEd:
Two bows looking alike at brace and full draw does not mean they will have the same amount of stored energy.It's what the tension is on that string throughout the draw from the get go that's the difference in stored energy.It begins with the design and unbraced profile and integrity of materials used.Not paying attention to mass per draw weight is a mistake also when going against horn bows.
Comparing KE between bows using different weight arrows on each bow is not an accurate or true test of 2 bows.

sleek:
Well, reckon ima need mass specs too then.

sleek:
Biggest problem will be availability of data. I dont think im going to make mass a goal, but will be happy to measure it when done for comparison. I do plan on shooting similar arrows in weight to compare KE. I dont want efficiency of one bow to skew the results of another by not comparing grain weight arrows. Of course, that limits me to basically k owing a person with a horn bow to get that info from.

As to your point on brace and full draw profile, I know the unbraced is 1/3 the equation. But that will be the only variable I work with to make the brace and full draw effective profiles for these bows. Add to the variable, frontal profile as well. I want to recreate horn and sinew with wood only and allow myself the variables I have based on only " Thats how I wanna do it."

mikekeswick:
The amount of energy per mass that the materials can store and their elastic limits are the factors that will determine what shape bow you can make.
Bear in mind that 48 inch is overly long for a Turkish bow. 42 - 44 inch being the average and the limbs only bend over a 12 inch section...My 48 incher could be drawn to 30 with no ill effects.
When I say that you can't make a wooden bow the same or really even close to a Turkish bow I not guessing! The materials are not capable of it. It could be proved with numbers but....that isn't necessary! If (and i'm sure you can with sinew to stop splinters lifting) you manage to get one to stay together it will be a heavily overstrained bow that will not perform well....there is no way around it.
Don't you think that IF it could be done it would have been done?!? How long have people been making bows? How long have people known the properties of wood through experience of working with it? If it was possible to make a comparible bow out of wood why did the Asiatic peoples even bother to make hornbows?
I suggest you try to make some broadhead flight bows. I made a whole batch of them a few years ago and they taught me a lot about what you can get out of a wooden bow. The best performers are always the ones that get to full draw with low set and haven't ever been overstrained. Making a great wooden bow is about learning to finesse your way upto full draw and keeping the wood 'fresh' along the way. My best wooden bow was a b.locust r/d recurve. Nothing extreme apart from short , sharp recurves, about 2 inch overall reflex and that thing is smoking fast and it looks nothing like a hornbow.....because the materials used are totally different....they can't look the same. Material properties are what determine design and you simply can't separate the two. Think about the analogy I made above regarding the bridges.....;)

DC:
I was just reading Tim Bakers "Bow design" chapter(around page 50) last night and I think he claims that the side profile of the "used and unbraced" bow will determine the energy storage. Doesn't matter whether it's all wood or sinew or horn, as long as the unbraced shape and draw weight are the same and the bow actually survives the bend, the energy storage will be the same. Are we disputing that?

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