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Blacksmith's *s'Gretel* 78" Yew Warbow +125#@32"
Marc St Louis:
--- Quote from: bownarra on November 26, 2015, 04:26:06 am ---Marc - you said i've misquoted you and then you misquote me multiple times....its hard to compare apples and oranges ;)
You are wrong about the width part of what you are saying - width has nothing to do with how far a piece of wood can bend. Also ELB's don't have to made with any given width taper like you are suggesting, in fact that doesn't even make sense.
I spent quite a few years studying the equations and theory relating to these sorts of things. A beam that changes thickness (even if the width also changes proportionately) but is bent to an arc of a circle is NOT strained evenly I can assure you. Plenty of stress/strain analysis has been done on every conceivable shape of beam and the physics behind it isn't wrong! A little searching will back up what i'm saying here.
Ruddy - If you want to write remarks like that when somebody has taken their time to try and help you understand things which you appear to not really a have handle on that's totally fine but I won't be wasting my time again.
--- End quote ---
I guess you must know more than the hundreds of bowyers of the past. I have many, many years of experience that says differently.
At no point in my reply did I suggest making an ELB with any width taper ???
I recently received an e-mail from someone that purchased a bow tillered like this and it lost 20# in less than 200 shots and the second bow did the same thing. That is what happens to a bow that is whip tillered, they have a shorter lifespan of a bow stressed properly. That's not to say it won't survive but performance drops substantially, swiftly.
I made an ELB flightbow many years ago for the Nevada shoots and tillered it that way. I knew it would perform better but that it would have a shorter lifespan. It set a record that year
I know that there is a lot lost in this form of communication and that is part of the problem here.
We will just have to agree to disagree
ceolith:
What a thread... :o
Ok, same bow, same fulldraw-picture, but a different angle and helplines... ::)
Marc St Louis:
Tiller looks better in that picture. There's still what looks like outer limb set in the unbraced profile. Perhaps this was there before tillering the bow?
Looks like BA did not like this debate as he has requested his account be deleted. I'll give him a day to think it over.
poplar600:
--- Quote from: Marc St Louis on November 26, 2015, 06:53:45 pm ---Tiller looks better in that picture. There's still what looks like outer limb set in the unbraced profile. Perhaps this was there before tillering the bow?
Looks like BA did not like this debate as he has requested his account be deleted. I'll give him a day to think it over.
--- End quote ---
So Blacksmiths bow is whip tillered?
What is the best tiller shape for long livety and little set?
ceolith:
--- Quote from: poplar600 on November 29, 2015, 02:19:13 pm ---
So Blacksmiths bow is whip tillered?
What is the best tiller shape for long livety and little set?
--- End quote ---
...no he is not whip tillered...
This one is a typical whip-tillered bow:
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