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Draw weight Quandary

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Archeress:
thanks Wills...yes the early stack is damned hard and i agree that my progress was slow because i coouldnt get the elbow back sufficiently to give the rest of it a yank.  Was like trying to push over a brick wall.  Though i did have the stratton bow back to eye level..that was ll i coould muster.  a couple weeks and the bow will come out to play...lets see what video tells us then.

toomanyknots:
I am totally confused here, what is "early stack"?  ;D The stacking I know refers to the dramatic increase in draw weight near the full draw, making a bow that is not pleasant to draw. A bow with no stack usually has higher early draw weight, but a smoother force draw curve out toward the end, making an easier bow to draw. Haven't read to much, I will go back and re-read the thread though...

Del the cat:

--- Quote from: toomanyknots on December 27, 2013, 05:07:59 pm ---I am totally confused here, what is "early stack"?  ;D The stacking I know refers to the dramatic increase in draw weight near the full draw, making a bow that is not pleasant to draw. A bow with no stack usually has higher early draw weight, but a smoother force draw curve out toward the end, making an easier bow to draw. Haven't read to much, I will go back and re-read the thread though...

--- End quote ---
I'm glad it's not just me...
Often with a warbow it's the archer who is 'stacking' not the bow!
I plotted a force draw curve for the 130# Self Yew warbow I just made and it was remarkably linear, which is how it should be on a long bow with long working limbs.
Del

WillS:
Basically, you get two types (bear with me, because I don't know the physics/mechanics behind this, just the feel!)

Type A ) Feels incredibly hard to pull to begin with, and really makes it difficult to get a full warbow draw, as it relies heavily on wrist tendons and arm strength to get the string back far enough for the back and shoulder muscles to start working as the elbow comes down.  At this point, the weight softens and the roll-back to full 32" comes relatively easily

Type B ) Basically the opposite, more well-known as "stacking" - nice and soft and linear to begin with, easy to get to around 20" or so of draw, but starts to stiffen up and feel heavier and heavier as you get towards the end, where the elbow comes down.

I think B ) is actually "stacking" whereas A ) is just... high performance warbow, I guess.  With bow A ) you get a HUGE surge and kick of power as the string gets to brace height, but with bow B ) you feel it all at the beginning, and it softens as it comes back to brace height.  Bow A ) is better for flight and distance stuff, and is the "holy grail" of a big bow. 

toomanyknots:

--- Quote from: WillS on December 27, 2013, 05:29:59 pm ---Basically, you get two types (bear with me, because I don't know the physics/mechanics behind this, just the feel!)

Type A ) Feels incredibly hard to pull to begin with, and really makes it difficult to get a full warbow draw, as it relies heavily on wrist tendons and arm strength to get the string back far enough for the back and shoulder muscles to start working as the elbow comes down.  At this point, the weight softens and the roll-back to full 32" comes relatively easily

Type B ) Basically the opposite, more well-known as "stacking" - nice and soft and linear to begin with, easy to get to around 20" or so of draw, but starts to stiffen up and feel heavier and heavier as you get towards the end, where the elbow comes down.

I think B ) is actually "stacking" whereas A ) is just... high performance warbow, I guess.  With bow A ) you get a HUGE surge and kick of power as the string gets to brace height, but with bow B ) you feel it all at the beginning, and it softens as it comes back to brace height.  Bow A ) is better for flight and distance stuff, and is the "holy grail" of a big bow.

--- End quote ---

Okee dokey, I gotcha now. In my opinion, I think the holy grail of bows shoots like a compound bow, with hella early draw weight, and then randomly drops weight or so at fulldraw so it is easy to hold drawn. I have made some manchu style bows that feel like that when you draw them when the string comes off the string bridges at full draw, although I know it can't possibly be lowering in draw weight, I mean it just feels like that. And then rockets an arrow upon release, :).

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