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Author Topic: Should I remove the twist or not? -FD update  (Read 4142 times)

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Offline bubbles

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Should I remove the twist or not? -FD update
« on: February 22, 2019, 09:44:08 am »
I realize i'm coming at this a little late, as I'm getting ready to start shooting this one. There is some twist in the bottom limb.  Near the fades, the limb twists clockwise.  Near the tip, the limb twists back counter clockwise.  I've been pretty diligent about keeping the wood removal on each side very even.  I'm basically at my target draw weight and length.   
Here's the thing, the statics line up fine, come back nice and straight when drawn,  and are not torquing at all.  String lines up great.   So the bow seems fine as is, but would you guys take care of that twist?  I'm thinking of longevity,  and if the twist will eventually lead to failure.  It's somewhat overbuilt as it is.  65", 1.5" wide 60#@27" right now.

Also, after shooting in and making sure the tiller has settled, would any of you wrap the pins with sinew? As an extra measure of caution?
Thanks,
Mike.   




Here are some links to the photos without the photobucket banner.
<img>https://www.dropbox.com/s/ulheqlydqb0gp55/Screenshot_2019-02-19-11-48-14.png?dl=0<img>
https://www.dropbox.com/s/d689gr4p6bglb7c/20190222_114655.jpg?dl=0
<img>https://imgur.com/a/TXEQnqS<img>
« Last Edit: March 28, 2019, 06:10:09 pm by bubbles »
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Offline DC

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Re: Should I remove the twist or not?
« Reply #1 on: February 22, 2019, 09:53:36 am »
If it ain't broke, don't fix it ;D When you have recurves if you try to take the twist out of one area you will just mess up somewhere else. If the string alignment is good through the whole draw then it's right. :D
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Offline PEARL DRUMS

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Re: Should I remove the twist or not?
« Reply #2 on: February 22, 2019, 10:33:51 am »
Like Don said, if aint broke don't fix it. Statics will throw the string when they aren't happy with your alignment job. You may think its over built, but its not. Consider that a 57" bow when you eliminate 8" of limb becoming static. Even a straight 6" tip contributes on a straight bow.
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Offline Sidewinder

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Re: Should I remove the twist or not?
« Reply #3 on: February 22, 2019, 11:57:37 am »
Its looks great from your full draw pic, I would leave it alone at this point.
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Offline bjrogg

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Re: Should I remove the twist or not?
« Reply #4 on: February 22, 2019, 12:47:16 pm »
Once again I totally agree with Pearl and D.C.  That bow is really bending. I'm thinking you got about all your gonna get out of that one. Nice job. I'm guessing it's pretty snappy.
Bjrogg
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Offline Pat B

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Re: Should I remove the twist or not?
« Reply #5 on: February 22, 2019, 01:14:16 pm »
I wouldn't mess with the twist. Just shoot it. And I wouldn't worry about the pins unless they have been violated. A drop of super glue on the ones with the knot showing might help you sleep better at night.
 Your bend looks good.
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Make the most of all that comes and the least of all that goes!    Pat Brennan  Brevard, NC

Offline bubbles

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Re: Should I remove the twist or not?
« Reply #6 on: February 22, 2019, 02:37:04 pm »
Sweet.  Thanks for the advice.
A bit of a follow up, if any of you were starting out with a stave with this amount of twist, would you have removed it after you got the bow bending a bit?  Basically, in the future, should I be removing the twist? (It would probably make tillering easier)
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Offline DC

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Re: Should I remove the twist or not?
« Reply #7 on: February 22, 2019, 02:56:13 pm »
In a highly recurved bow like this where there is a a high probability of having to reheat sections to get the string alignment right it probably not a good idea to heat bend things any more than you have to. I have worked a few bows where I had to steam out some sideways bends. Later in the tillering I had to heat that section again for string alignment. Well the original sideways bend started to come back and the whole thing went west. You end up having to do fifteen heating sessions to get it right. If you are a good planner maybe you can arrange your bends/twists so that you don't have to reheat a section. I'm not a good planner. Maybe we should make straight bows out of crooked staves and crooked(recurved) bows out of straight staves. :D
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Offline bubbles

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Re: Should I remove the twist or not?
« Reply #8 on: February 22, 2019, 07:20:18 pm »
Haha. Good point.  :)
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Offline Pat B

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Re: Should I remove the twist or not?
« Reply #9 on: February 22, 2019, 08:47:35 pm »
If I'm gonna take twist out I do it early in the process, as soon as it is thin enough, after floor tiller stage.
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Make the most of all that comes and the least of all that goes!    Pat Brennan  Brevard, NC

Offline bubbles

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Re: Should I remove the twist or not? -FD update.
« Reply #10 on: February 27, 2019, 12:55:38 pm »
Hit the old FD point and am shooting her in. How is it looking so far?  I'm debating whether or not the limb balance needs tweaking. Any advice? Is the top limb working too much?  Feels okay in the hand. I find I really can't tell how a bow shoots until I make an actual string for it. I find my tillering strings always make a bow seem more hand shockey than they actually are.
Pics without watermark:
https://www.dropbox.com/s/yh6wtzwi80lcxk4/Screenshot_2019-02-27-15-03-08.png?dl=0
https://www.dropbox.com/s/k6uk5g78xejcama/Screenshot_2019-02-27-15-05-11.png?dl=0
https://www.dropbox.com/s/gwfx1ygdzzb40vo/Screenshot_2019-02-27-15-05-28.png?dl=0




Thanks!!
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Offline Pat B

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Re: Should I remove the twist or not? -FD update
« Reply #11 on: February 27, 2019, 01:02:02 pm »
I think the bend looks good and in the bottom limb one twist counters the other. As long as the twist doesn't cause the string to come off the nock you should be fine. Nice looking bow.  :OK
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Make the most of all that comes and the least of all that goes!    Pat Brennan  Brevard, NC

Offline Knoll

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Re: Should I remove the twist or not? -FD update
« Reply #12 on: February 28, 2019, 01:37:25 am »
Good lookin' weapon. Congrats.
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Offline bjrogg

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Re: Should I remove the twist or not? -FD update
« Reply #13 on: February 28, 2019, 05:12:09 am »
Nicely done sir. I'm thinking you got about all that one is willing to give.
Bjrogg
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Offline DC

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Re: Should I remove the twist or not? -FD update
« Reply #14 on: February 28, 2019, 08:10:13 am »
It looks real nice. You might be able to lose a little weight off your statics, they look a little bulky but I can't see it that well from here. ;) What kind of wood is it?
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