Siyahs=limb torque grrrrrr. 49" ntn strung ( 54 along the back ) fd chart PICS!!

[sleek]

 So i have bent in flat recurves.... aka... siyahs. They are 6.5 inches long and at brace they dont ley flat with the string but stick up 2 inches. I havent installed briges yet.the plan is to make a bridge and brush nock all in one. But every time it wants to twist one way or the other. Maybe I overcompensate when I correct it, idk, but this is driving me mad.

[Aaron H]

How wide are your limbs?  Wider limbs = more lateral stability

[sleek]

Inch and a hald at the fades tapering to 3/8 nocks.its osage btw....

[Aaron H]

How wide are the limbs at the base of recurves?  I imagine that is where they are getting torqued

[sleek]

7/8"

[DC]

I've only done a few recurve/siyah bows and they can be a PITA. I made a jig that holds the bow solid(basically a vise) and clamped a piece of wood by the tip. I marked where the tip is now on the piece of wood and a mark where I thought it should be. Then heated it at the base of the curve and twisted it to the "should be" mark. I was moving it 1/4" at a time with 5" of reflex. Don't count on sighting down an unbraced bow to decide if it's right. I based my guesses on which way the string moved when it lifted off the bridge.  Just keep at it until it works or you give up

[sleek]

Best advice ever.

[Onebowonder]

<snip>Just keep at it until it works or you give up

I think this needs to be on a refrigerator magnet somewhere!

OneBow

[simson]

Sleek, first measure how far the tip should travel.
Then clamp bow in the vise, add a weight and measure with a yard stick to the ground.
Heat and watch the recurve /siyah travelling, until you rech what you want.

Now way to do that adjustments just by eyeballing!
Somewhere here:http://primitive-bows.com/osage-static-build/
you can see the setup

[sleek]

Thanks for all the help guys. I got it but certainly went about it the hard way.

[sleek]

So i am at full draw now and have made an fd chart. Im 2 pounds shy of my 45 pound goal, I will heat the limbs a touch as they are untreated to get those pounds back.  Here is the chart.

10.    7

12.    12

14.    15

16.    18

18.    22

20.    26

22.    30

24.    35

26.    38

28.    43
 

The bow when strung is 49.5 ntn. But with its curves, measured along the back, is 57. ( correction, 54 inches along the back )The goal of this was long bow performance with short bow advantages... also with the limb mass closer to center it should allow a faster return of the tips on release. I hope this is a fast bow....

[sleek]

With having string bridges I am scared the string wont hit them on release and snap my tips. I got the tips aligned but still, its worrysome.

I think i just realised why they dont use slip nots on these bows..... LMAO

[Badger]

  How far behind the back of the bow are the tips when unbraced? how much set did it take?

[sleek]

Took one inch of set. After unbrace the tips are one inch above the back.

[bubby]

Took one inch of set. After unbrace the tips are one inch above the back.

I thought they were 2" above the back when braced😕