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Author Topic: Ferret Friendship Bow: Finessing a Tiller  (Read 6548 times)

Offline Dano

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #20 on: January 21, 2006, 07:00:00 PM »
Must be the lighting in the pictures, the right limb looks stiffer, full draw the right looks stiffer as well.
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Offline AZStickman

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #21 on: January 21, 2006, 07:03:00 PM »
You're seeing it right Dano.... Terry
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Offline Dano

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #22 on: January 21, 2006, 07:09:00 PM »
Now I'm confused   :D  If the right limb is the upper, how can you have positive tiller? I'm missing something.
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Offline George Tsoukalas

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #23 on: January 21, 2006, 07:11:00 PM »
Dano's right. Mid limb out right limb or make it the bottom limb. Looks good. jawge
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Offline AZStickman

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #24 on: January 21, 2006, 08:04:00 PM »
Quote
Top limb is reading 5 3/8", 4" out from the fades and the bottom limb is at 5 7/8".....  
Bottom limb is positive not the top....   ;)    I've got some room to make adjustments but not much... I may wind up flipping them we'll see tomorrow...... Terry
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Offline Dano

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #25 on: January 21, 2006, 08:10:00 PM »
Gotcha Terry  :D
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Offline the Ferret

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #26 on: January 22, 2006, 10:17:00 AM »
Terry real tough to not pick up follow on a 59" bow pulling 27" that started out basically flat. Should be a smooth drawer and shoote though. Gosh that's making wood bend   :scared:   (btw that's only 1" longer than the Torges bow challenge bow requirement)
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Offline AZStickman

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #27 on: January 22, 2006, 12:21:00 PM »
Here's our starting profile for session 4 My goal this session is to get our tiller evened out and hopefully still make weight:

     

After some careful scraping on the top limb (right)I have a 3/16 negative tiller. The string alignment seems to favor the bottom limb up and the tiller is leaning the same direction so I'm going to go with it. the left limb is now officially my top limb... Just when I got Dano unconfused....Sorry Dano      :D      :

     

Here she is pulling 38#@26". Looks like I missed weight by a little. She kind of hits a wall at full draw due to the string angle:

     

And here's our finished session 4 profile:

     

   


Lessons learned:
For an Osage bow this short with a low target draw weight I'd make the limbs a little narrower next time. On a heavier bow you would still have enough thickness to keep the tillering relatively easy. With this bow my limbs finished out much thinner than I'm used to. The rule is twice as wide twice as strong but twice as thick 8 times as strong. So when you have thin limbs just a few shavings make a bigger difference.

Bow limbs run out of bend when the string angle hits around 90 degrees.... If you want to hit 27 or 28" on a short bow like this you need to flip the tips to keep the string angle down.
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Offline mike hall

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #28 on: January 22, 2006, 01:34:00 PM »
Thanks for sharing Terry. Good stuff Bro.  :)
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Offline NorthShoreLB

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #29 on: January 22, 2006, 01:42:00 PM »
I lost trak,... where's the upper limb?  :scared:  


Nice !!


        manny
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Offline AZStickman

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #30 on: January 22, 2006, 03:10:00 PM »
LOL.... Quit it Manny now I'm getting confused...and Thank You Mike.... BTW I just took a trick from Davids book and added the Limb on Limb combo pic to the session 4 post... Terry
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Offline the Ferret

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #31 on: January 22, 2006, 04:04:00 PM »
ok Terry ..only one way to get the weight back up..elk sinew    :bigsmyl:
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Offline AZStickman

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #32 on: January 22, 2006, 04:40:00 PM »
Mickey ya know me too well.... I've got some of the prettiest stripped Elk sinew you've ever seen that I've been saving for a special project... It might look familiar to you...    :D    I'm gonna go ahead and get the handle shaped and then get her backed .... This is my last Osage stave I've got to make it work.... Terry
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Offline Linc

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #33 on: January 22, 2006, 04:41:00 PM »
WOW Terry.Looking good.Sure making those limbs bend.  :thumbsup:
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Offline Dano

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #34 on: January 22, 2006, 05:36:00 PM »
:bigsmyl:  Cool another builalong to look forward to. I'm cornfused all the time Terry it ain't your fault. BTW tiller looks great, too bad you missed wieght. Good lessons learned tho.
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Offline George Tsoukalas

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #35 on: January 22, 2006, 05:47:00 PM »
Terry, you got a beautyful tiller. Well done.  Set happens.  :)  Jawge
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Offline '46

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #36 on: January 22, 2006, 05:56:00 PM »
Terry, she's looking really fine bud. A little sinew will work it's magic and bring her up in weight. Nice bow and a fine tiller.

Was that stave one that I might know?    :)
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Offline AZStickman

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #37 on: January 22, 2006, 06:15:00 PM »
George I was drawing a blank on where I got it... I think my memory was just jogged....  :D  Thanks Bud..... Terry
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Offline NorthShoreLB

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Re: Ferret Friendship Bow: Finessing a Tiller
« Reply #38 on: January 22, 2006, 11:49:00 PM »
Sinew now ??

     Looking forward to this.

   Manny
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