ok everybody this is to answer a few of my buddies questions and doubts about brace ht and forgivness--concerning accuracy.why cant a short draw archer with a 27 to 28 in draw length with a brace ht of between 53/4 to 63/4 be as accurate and consistant as someone with a draw between 29 and 30 in with a brace ht between 63/4 to 73/4.also due to draw length why cant a short draw archer shot a short bow axle to axle of 31 to 34 with the same accuracy of longer draw archers.i thought this was possible due to not as much string pinch on the shorter draw compared to the longer draw.any feed back would be appreciated ! i have told them a short draw archer really has a few added bonuses except for top of the line speed
I don't call those draw lengths particularly short, so you are comparing a 3.7 percent change in draw length, to a 17% decrease in brace height.
Also, you don't get the same bow often in the short draw length model. It isn't going to necesarily be a bow redrawn in every proportion to simply scale down the "forgiving" bow.
If however you scaled down the bow in a forgiving way, I buy your basic proportions theory, but it would probably only justify a change of about 1/4".
I think the critical factor is how well anybody shoots. If you have a great grip and bow arm position/performance, then I think that you will probably shoot a low BH bow with little difficulty. If a person is a bit of a hack, they are looking for further problems.
Because no matter how short or long your draw length - a shorter brace bow still releases the arrow closer to the rest than a longer brace bow (one of the reasons an over draw is harder to shoot)
The closer an arrow is release to its pivot point (rest) the more exagerated any deviations form center have on the arrow flight.
this is one reason it is believed drop aways may lessen the effect of a short brace (because that "pivot" is gone)
I also agree with Ossage in that the % difference is not the same
With that said - short brace bows can still be shot rather well, and it depends on your form and how "well' you want to shoot.
I don't care what your DL is a 5-1/2 Brace is going to much harder to hammer a 60x game than a 8" brace - because the margin of error is so small.
Now throw in a broadhead and the forgiveness factor of a short brace can really expose bad form.
Then add the clothing factor and problems can mount.
But if your good - you can shoot em pretty darn well.
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The longer the brace height the quicker the arrow gets off the string. Hence the forgiveness of the string imparting more or less torque (movement) on the arrow.
A bow with a 30 inch draw and a 8 inch brace height will be equally as forgiving as a bow with a 25 inch draw and a 3 inch brace height.
That is assuming that the bows are equal in every way except for the brace height. Of course you have to keep your arm out of the way with a 3 inch brace height.
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The longer the brace height the quicker the arrow gets off the string
I really do not believe this to be a major factor (if a factor at all in accuracy)
Some of the toughest to shoot - fasted bows around get the arrow off the string in 1/2 the time of the most forgiving target bows.
If this where the case IMO Top pros would not be shooting 500 to 600 grn arrows at slow mo speeds. They would all be shooting the lightest fastest arrows they could.
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Everyone always asks me what am I on?...........
What am I on???????
I am on my Bike 6 hours a day, Busting my A**...thats what I am on.
You're right, it is but one small factor of a long list of factors that add to or detract from forgiveness of a bow. However, all other things being exactly the same the shorter brace height bow will be less forgiving than the bow with the longer brace height because the bow will move just a little bit more before the arrow leaves the string.
I know this would be virtually impossible to achieve but that's the theory. The quicker an arrow gets off the string the less a person can move the arrow around.
Riser design, riser material, limb pocket desicn, limb material, split or solid limbs, length of limbs, weight of the bow, string material, cam design, draw force curve, arrows used, head weight, total arrow weight etc...etc...etc... all play a part in how forgiving a bow is.
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"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency........... Blaming the prince of the fools should not blind anyone to the vast confederacy of fools that made him their prince. The Republic can survive a Barack Obama, who is, after all, merely a fool. It is less likely to survive a multitude of fools such as those who made him their president."
also due to draw length why cant a short draw archer shot a short bow axle to axle of 31 to 34 with the same accuracy of longer draw archers.
The draw length generally doesnt make the 31 - 34 inch bow less accurate.
What makes the 31" bow less accurate is the fact that it is less stable. ie- an object at rest will remain at rest unless acted upon by an outside force. The shorter bow is easier to torque and cant because it is a smaller/lighter object and therefore easier to enact that outside force. (your hand, follow through)
And I will agree with Rack about the brace height not being so much to do with the power stroke, but the closer it is to the rest. I beleive when the arrow is being propelled by the string, it is far harder to "cushion" itself against the rest than if it was off the string beforehand.
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You are right to some degree with your theory.You are getting into power stroke.A person with a shorter draw can shoot a bow with less brace than someone with more brace and a longer draw and have the same power stroke.This will make the bows have the same "forgiveness factor" in both hands but in a perfect world with a perfect shot, it isn't a factor.
What gets overlooked is reflex and a bow can have an 8" brace and a 2" reflex and would be no more forgiving than a bow with 7" brace and a 1" reflex.
Something else to ponder over while b.s. ing with your friends.
Taking the general agreement between you guys that a very short bow is less accurate.......then why are mfgs. selling them and many archers wanting them? It absolutely makes no sense to use a less accurate bow for hunting.
Taking the general agreement between you guys that a very short bow is less accurate.......then why are mfgs. selling them and many archers wanting them?
Maneuverability. Also, the bow may not be any less accurate, however, it will be less stable. You put a 31" bow and a 40" bow in a shooting machine, chances are they will be the same accuracy wise.
Also take into consideration that many of the bows with parralel limbs are much more stable than the short bows of just 2 years ago. The longer riser definitly adds stability.
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Proud member of the Quality Deer Mis-Management Association
brace ht--myth or fact!
