Primitive Archer

Main Discussion Area => Bows => Topic started by: aznboi3644 on February 04, 2022, 08:33:18 pm

Title: Roller coasters and whoop dee doos why!!!!!!
Post by: aznboi3644 on February 04, 2022, 08:33:18 pm
Man oh man these things are the death of me.  I feel like I have a good eye for a tiller on a nice clean straight stave either split or board.  But dang do the roller coasters and whoop dee doos are the death of me.

I have a couple staves with a very pronounced roller coaster on one limb.  Two deflected areas and two reflexes areas all about 6-7” long transition between one to the other.  I already don’t have the best eyesight even with glasses.  People ask me if I’m near sighted or far sighted but I’m more no sighted.  I can’t see my glasses if they fall off my face LMFAO. I have to get on my hands and knees to find my glasses. 

Anywho are there any tips or tricks for these characters?  I have one stave I’ve been staring at for months.
Title: Re: Roller coasters and whoop dee doos why!!!!!!
Post by: RyanY on February 04, 2022, 08:58:22 pm
I use my fingers a lot, feeling the thickness taper. There’s a level of trust knowing that an even taper result in a good bend.
Title: Re: Roller coasters and whoop dee doos why!!!!!!
Post by: Hamish on February 04, 2022, 09:24:34 pm
Calipers to check the thickness tape,r to avoid weak spots are essential for high character staves.

Patience, and having photo's of the stave before you started tillering are pretty important too.
Title: Re: Roller coasters and whoop dee doos why!!!!!!
Post by: Selfbowman on February 04, 2022, 10:54:46 pm
I’m with Ryan. If your vision is not good . Feel the bow from end to end as soon as you knock the edges down a bit so as to not get splinters in your hands. Use your fingers as if they were calibers . It takes practice but you can get real good at it. You will feel the high spots same as Eric’s gizmo in the tiller process. Get your back finished first and work toward the belly. Feeling the high spots thru the whole process. I take rough out measurements and from then on its feeling for diminishing mass for me . Especially with a pyramid. Arvin
Title: Re: Roller coasters and whoop dee doos why!!!!!!
Post by: stuckinthemud on February 05, 2022, 05:45:03 am
You can feel high spots more easily while the bow is bent
Title: Re: Roller coasters and whoop dee doos why!!!!!!
Post by: bradsmith2010 on February 05, 2022, 03:52:48 pm
just start learning to tiller them no easy way,,, ,, It just takes practice to get the taper even,, because the bend wont look right,,
Title: Re: Roller coasters and whoop dee doos why!!!!!!
Post by: Selfbowman on February 05, 2022, 09:34:27 pm
just start learning to tiller them no easy way,,, ,, It just takes practice to get the taper even,, because the bend wont look right,,

All true Brad.
Title: Re: Roller coasters and whoop dee doos why!!!!!!
Post by: George Tsoukalas on February 05, 2022, 09:47:07 pm
With your eyes imagine  a line through the stave on both limbs.
Remember that deflexed areas needs to bend the same amount as reflexed areas.
Title: Re: Roller coasters and whoop dee doos why!!!!!!
Post by: bownarra on February 06, 2022, 01:34:10 am
With your eyes imagine  a line through the stave on both limbs.
Remember that deflexed areas needs to bend the same amount as reflexed areas.

Yes but you also need to realize that a concentrated area of deflex made with a constant thickness taper will hinge....you see a deflexed area acts like a stress riser (of sorts).
Title: Re: Roller coasters and whoop dee doos why!!!!!!
Post by: Selfbowman on February 06, 2022, 10:03:30 am
True bowanrra. I suggest working a few straight grain and limb bows till you get the feel of it down. Like Brad said practice practice and more practice.
Title: Re: Roller coasters and whoop dee doos why!!!!!!
Post by: Del the cat on February 06, 2022, 02:54:40 pm
Here's a video showing something I tried to help see the curve on a wonky bow:-
https://www.youtube.com/watch?v=j0cyp4g9Noc (https://www.youtube.com/watch?v=j0cyp4g9Noc)
Del
Title: Re: Roller coasters and whoop dee doos why!!!!!!
Post by: Selfbowman on February 07, 2022, 09:45:34 pm
Interesting Del . I lot of work with those cards but I can see how that would make for a good tiller. Arvin
Title: Re: Roller coasters and whoop dee doos why!!!!!!
Post by: bjrogg on February 07, 2022, 10:37:27 pm
That’s a cool idea Del. Thanks for sharing that. I agree left limb is a little stiff yet.

It’s funny switching back in forth between looking at the paper and looking at the wonky limb. Sure does take a lot of the confusion out of it looking at the paper.

Bjrogg
Title: Re: Roller coasters and whoop dee doos why!!!!!!
Post by: aznboi3644 on February 07, 2022, 10:38:54 pm
Thanks for the tips guys I’ll take all of this and move it to my character bow.  I really appreciate all of the help
Title: Re: Roller coasters and whoop dee doos why!!!!!!
Post by: George Tsoukalas on February 08, 2022, 11:54:56 am
bownarra, I think it will appear to hinge but a deflexed  still needs to do its share of the work.
If one wants a picture perfect tiller then don's use a character stave.
Jawge
Title: Re: Roller coasters and whoop dee doos why!!!!!!
Post by: Mo_coon-catcher on February 10, 2022, 12:14:38 pm
I trace the profile onto a piece of lumber or paper so I can refer back to it and see where the set is occurring and just how much. Some of those highly characteres ones are hard to tell they’re taking set until it’s too much if you don’t have a reference to where it started.  I do a lot of the tillering with my hands on the wood to feel areas flexing while I’m working it on the tiller tree. If you place you hand different areas of the limb while flexing it you can feel if it’s working or not. I’ll watch it work for quite a few more pulls than a clean profile and if I question if it’s working I’ll feel the wood to get a better idea of what it’s doing.

Kyle