tillering osage limb twist/ its a bow (photos added)

[Lost Arra]

I am tillering an osage stave that has about a 30-45degree prop twist in the outer one half of one limb. It seems to be a consensus that if the tips and handle line up, which they do, then a little twist should not be a problem.

Now on the tillering tree the twisted part looks like a paddle and makes it a little hard to see the bending.

My question: Do I scrape my facets in the usual manner in the twisted area or does one side of the limb get more than the other? If the limb is twisted to the right, do I scrape a little more on the left side?

I hope to get some pics up tomorrow to help with my question.

Thanks

[Luke Vander Vennen]

Just my opinion, but if the limb is twisted that much, I would get a heat gun working on it. It makes it easier to see the tiller and, in my opinion, makes it just that much safer.

My two cents

[NorthShoreLB]

I would do the same as Luke.

In the long run I belive is less work, and less room for mistakes        

  Manny

[Hun]

Arra, just outer one half is hard to envision. Probably it's the whole limb twisting  right? Look down the limb and see if the twist starts in a certain part of the limb and than stays flat but twisted the rest of the way. You can get a heat gun or use steam to heat the area say 6 or 8" at the place where the twist begins. Use a vise to hold the bow and take a padded wrench and straighten the twist a little past flat.
If the whole limb is gradualy twisting you cuold just move the tip. You will still have the tillering hassle though. Good luck, Ferret posted some pics of the method recently.

[Lost Arra]

Well it looks like there is not a consensus on leaving a twist in a limb.

I guess I'll get the heat gun out tonight.

[T Folts]

You can also make a reflex form to induce reflex, straighten twist and line up the tips all at the same time.

Terry

[Ted Fry]

Lost arra , I would leave it as is , keep both sides equall thickness . Temptation is to thin one side, however that will put more stress on that one side . If you keep it the same you will notice that even though the twist is there it will pull straight with the axis of the bend.
To make it a bit easier to tiller measure every six inches from the string grooves and check each measurement from the center of the belly to the string to the same measurement on the opposite limb .
The measurements wont lie like the eye will

[George Tsoukalas]

...and sometimes you need to turn it around and look at the other side. Take a peak at Aerobow on my site. jawge

[Lost Arra]

George: I did look at Aerobow and that's why I didn't heat gun this stave yet. I will post pics in the morning but I think it can be done without heating/wrenching.

[Lost Arra]

This shows the twist  at the end of the stave.
I think I'll take another photo with it on the tillering tree. It might show better. It is a little more twisted than this photo shows.

 

[Slim Buttes]

You call that a twist?

[Lost Arra]

It's really more exaggerated than that photo but then again, maybe its not twisted that much. It's on the tree that it is giving me a problem:

Both of the following photos are with the twisted limb on the right side. :

 

 

[Ted Fry]

I hope the rest of only get wood with that much twist

[Lost Arra]

Here it is with the twist on the left side.
I had planned to not heat correct it but I didn't want to get too far along and wish I had..

 

 

[Lost Arra]

All right,  all right...... maybe I've just been spoiled with the other bodark I've used in my novice bow building.

Ted: I took your recommendation with the measurements and things are starting to come together much better.  I will have it on a short string soon as it is getting easier to ignore the twist, especially since you and slim are making a joke of it.    

[George Tsoukalas]

Your doing a fine job. Don't think of it as twist. Think of it as character.    Jawge

[Lost Arra]

George: sometimes I do better if I don't think at all!    
Someone here (I think it was Stan) called it "paralysis by analysis".

This afternoon after looking again at your Aerobow and with Ted's encouragement to skip the heat gun I just jumped in with both feet and now she's done. 62" and a little over 60#@28 right now but I've only shot about 20 arrows and I'm not finished sanding so I'm hoping for about 55#. I really need some advice on shaping limb tips. Mine always look like "thumbs".

 

 

[the Ferret]

Dang Bob you are getting good at this game. Nice looking bow. I have a thing on my website about shaping tips and overlays that may help.

 http://groups.msn.com/ferretsarcherywebpage/installingtipoverlays.msnw

[rocdoc]

Nice job Bob!!!

I knew I should have given you some 'trashwood' at McAlaster....then you wouldn't have know any better.  That's not a twisted limbed bow, it's just Osage ;-)

[rocdoc]

You wouldn't have knowN any better either ;-)