Author Topic: Gotta love limb opposite profiles  (Read 3828 times)

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Offline joachimM

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Re: Gotta love limb opposite profiles
« Reply #15 on: December 15, 2017, 08:01:28 am »
As for the last picture, relative to the unbraced profile, your right limb is bending quite a few cm further than the left limb.
there seems to be a hinge near the tip in the right limb (pretty clear now in a graph program), and a little less pronounced in the left one too.
May be a photographic effect, but have a good look at it.

J




Offline simson

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Re: Gotta love limb opposite profiles
« Reply #16 on: December 17, 2017, 02:12:18 am »
In my opinion a perfect tiller would be asymmetrical with the left limb becoming the top of the bow and the bottom bending a little less.

exactly like Chuck said. I personally would never leave the profile like you did. It is easy to bring the two limbs into balance and the tiller is much more comfortable to do. I'm curious what comes finally out.
Simon
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Offline Mo_coon-catcher

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Re: Gotta love limb opposite profiles
« Reply #17 on: December 17, 2017, 12:15:32 pm »
I'm gonna have most of the day tomorrow to work on it. I'm already starting to like this two on two off work schedule. I may go ahead and even out the limbs. Any idea of the best way to bend black cherry, dry heat or steam? It does have a layer of paper glued in the back with TB3. Because of this I'm leaning towards dry heat.

Kyle

Offline willie

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Re: Gotta love limb opposite profiles
« Reply #18 on: December 17, 2017, 02:20:56 pm »
Quote
I may go ahead and even out the limbs. Any idea of the best way to bend black cherry, dry heat or steam?
But now you be changing horses mid stream, just when I thought someone might offer some actual hints as to how to help doing it the "hard" way.

They're not really any more difficult than others. When you tiller bows with regard to dynamic balance, you tiller those the same as any other bow.

DWS, being that the two limbs are different, I guess you do not compare the limbs visually. Do you compare each limb to a mental image of what you preconcieve it should look like?

clamp your handle, watch your tips?

let your handle rock, watch your nockpoint?

I have some new wood drying and wish to learn more about the materiel, really do not want to preshape the stave, so any method to the madness of doing it the hard way will be appreciated.

Offline bradsmith2010

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Re: Gotta love limb opposite profiles
« Reply #19 on: December 17, 2017, 02:50:25 pm »
  ok I agree with Simson that if you start with even profile it is easier to tiller,,
that being said, if you want to shoot the bow"the hard way",, that can be done as well, and still shoot well,,
make the limbs bend evenly ,,,which ever limb you want up,, and have the bow with a bit of positive tiller at full draw,,
it will shoot well,, the braced profile should be secondary to the full draw dynamic,,and the whay the bow shoots trumps all,,,
   I can not tiller as well as some of the guys here, ,but ,,, I can tell when a bow is shooting well and getting perfect arrow flight,, that is key on a bow where the limbs do not match,,

   I agree with Chuck too,, but I have tillered some bows and put the reflexed limb on the top and deflex on the bottom,, and they will shoot well,, sometimes a bit of the reflex will come out,,,like your stave,, and then you still have positive tiller,,,

   since I dont know how the string is lining up on that bow,, I would consider that as well on which limb is up,, that being said you could not go wrong with the advise above from Chuck and Simson,,,, (SH) )P( (-S
« Last Edit: December 18, 2017, 01:33:20 pm by bradsmith2010 »

Offline Pappy

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Re: Gotta love limb opposite profiles
« Reply #20 on: December 18, 2017, 05:47:47 am »
I guess you can call it doing it the hard way buy leaving the profile uneven, and i have done that in years passed just because I didn't know how to change it, now I do and straighten the profile before I start tillering. As was said above it is very doable, just keep the limbs bending the same and it should turn out a good shooter. Looking forward to seeing the finished product. ;)
 Pappy
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