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Author Topic: How do you tiller critique this thing.  (Read 5227 times)

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Offline JoJoDapyro

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Re: How do you tiller critique this thing.
« Reply #15 on: August 01, 2014, 12:38:18 am »
The first time I looked at this I thought you were crazy, and then I realized its a Yumi, and It is beautiful.
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Offline DuBois

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Re: How do you tiller critique this thing.
« Reply #16 on: August 01, 2014, 02:02:22 am »
Hey man, that is awesome.

You better be careful though, next time the kids might get into your tools and not just the paint supplies  :P

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Offline Peacebow_Coos

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Re: How do you tiller critique this thing.
« Reply #17 on: August 01, 2014, 02:40:32 am »
Dang!  I like your style man most folks would have just burned 'em!
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Offline sleek

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Re: How do you tiller critique this thing.
« Reply #18 on: August 01, 2014, 02:47:21 am »
I would check tiller at brace based on tip deflection.  Measure the distance each limb tip moves from unbraced to braced. If both rips deflect the same ammount then you know both limbs are at least each taking half the draw weightload. If one deflects less than the other that limb is too strong and needs a few scrapes. Tiller each limb according to its shape its designed to have. But based on your report of performance, id leave it alone, other than checking tip deflection out of curiosity.  Nice job. I like it.
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mikekeswick

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Re: How do you tiller critique this thing.
« Reply #19 on: August 01, 2014, 02:57:50 am »
Quote from: sleek on August 01, 2014, 02:47:21 am
I would check tiller at brace based on tip deflection.  Measure the distance each limb tip moves from unbraced to braced. If both rips deflect the same ammount then you know both limbs are at least each taking half the draw weightload. If one deflects less than the other that limb is too strong and needs a few scrapes. Tiller each limb according to its shape its designed to have. But based on your report of performance, id leave it alone, other than checking tip deflection out of curiosity.  Nice job. I like it.

That would hold if they were the same profile and thickness as it is they aren't so non of that matters....
As George says by aware of what it does in your hand.
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Offline sleek

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Re: How do you tiller critique this thing.
« Reply #20 on: August 01, 2014, 03:05:33 am »
Well I defere to the more experienced than I.

But only because im confused I ask for clarity on my part.
Mike, why does the profile, thickness,  and such matter? Shouldnt the tips still deflect the same distance per inch of draw length assuming one limb isnt stronger than the other? Isnt each limb working toward a certain draw length at a set draw length, and as a result each limb must travel a certain distance to achieve that? And if one limb must travel farther than the other its off tiller because its needing to be stressed further? Unless the limbs of course are a different length. That changes everything.  Hoping you can tell me where im wrong?
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Tread softly and carry a bent stick.

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Offline sleek

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Re: How do you tiller critique this thing.
« Reply #21 on: August 01, 2014, 04:00:58 am »
Ok ignore me. I see where he said one limb was 3 inches longer. Im going back to my hole now...
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Tread softly and carry a bent stick.

Dont seek your happiness through the approval of others

Offline Del the cat

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Re: How do you tiller critique this thing.
« Reply #22 on: August 01, 2014, 04:37:01 am »
Like has been said... don't over think it (it'll just do your head in) If it feels right it is right.
I love this sort of experimentation it's how we learn. Makes a great conversation piece too. :laugh:
If you really want criticism, I'd say get it on a tiller where it is supported at a single curved surface so it can rock, you will get a better idea of how it moves when you pull it back... (IMO of course)
Or better still get some video of it shooting... maybe with Sandra Bullock drawing it?  :laugh:
(love the paint job :) )
Del
« Last Edit: August 01, 2014, 04:41:56 am by Del the cat »
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Offline PatM

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Re: How do you tiller critique this thing.
« Reply #23 on: August 01, 2014, 12:36:27 pm »
If it's already drawing a shooting smoothly there is no need to check the balance etc.
 The limb length doesn't make that much difference as to tip travel distance.
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Offline bow101

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Re: How do you tiller critique this thing.
« Reply #24 on: August 01, 2014, 12:39:04 pm »
Thanks for all the comments guys.   :)


 A few things inspired me to build it;  I had a couple broken bows sitting in the corner, Ryan built a cable backed bow sometime ago that was very obscure.  And the Yumi design gave me some inspiration.  Like I said the easy part was that the limbs were previously tillered. I had to tweak them a little which took no time and having said that they also took set before the glue up.   I got lucky on some points.  I did not shorten the top limb and cut in the arrow shelf in the right spot and first time lucky on placing the arrow string nock.     All Fluke    ;)
On my next project I hope to build a 2 piece from a broken Hawthorn...



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Offline Buckeye Guy

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Re: How do you tiller critique this thing.
« Reply #25 on: August 01, 2014, 12:47:26 pm »
My mind went back to Ryoons bow right away when I saw this
Good job 
I like it !!
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Offline Bearded bowyer

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Re: How do you tiller critique this thing.
« Reply #26 on: August 01, 2014, 02:12:00 pm »
Really nice job, I have a couple of broken ash bows I will try the same thing with  ;D
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Offline Josh Shuck

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Re: How do you tiller critique this thing.
« Reply #27 on: August 01, 2014, 03:50:05 pm »
It's so Frankenstein it's beautiful.
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Offline autologus

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Re: How do you tiller critique this thing.
« Reply #28 on: August 01, 2014, 04:16:35 pm »
I remember Ryan's bow that thing is a thing of beauty.

Grady
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Offline Ron Wright

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Re: How do you tiller critique this thing.
« Reply #29 on: August 01, 2014, 07:28:45 pm »
That's inspiring!
Now I know what to do with my collection of broken ones...
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