Author Topic: Yew billets belly drop build with sinew backing.  (Read 13346 times)

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Offline superdav95

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Re: Yew billets belly drop build with sinew backing.
« Reply #75 on: February 21, 2024, 04:58:06 pm »
Man they are looking very good, I love raw hide backing,especially when using my own from one I killed, don't do it much anymore but love the look and protection it gives, I don't do much competition but it dose take it out of the self bow class so I shy away from it unless I feel it's really necessary . :)
 Pappy

Thanks Pappy.  Yes a little protection goes a long way with yew. 
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Offline superdav95

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Re: Yew billets belly drop build with sinew backing.
« Reply #76 on: February 21, 2024, 04:58:53 pm »
Testing photo drop


Hopefully this works for better quality pics.  I finally got to get a little more done and just got this bow at low brace.  Figured I’d work on the heartwood one first as it’s the one I’m more suspect of.  It came out of floor tiller pretty good.  Still need some work on the outers I think and little scrape poss on the inner of the right limb.  I figured I’d post these pics and see how they turn out and get to work on this one. 

https://flic.kr/p/2pzvuxw


https://flic.kr/p/2pzp1gb



https://flic.kr/p/2pzp1gb

https://www.flickr.com/photos/193575471@N05/shares/3sLUjCz0D4
« Last Edit: February 21, 2024, 05:16:22 pm by superdav95 »
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Offline superdav95

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Re: Yew billets belly drop build with sinew backing.
« Reply #77 on: February 21, 2024, 07:02:18 pm »
This is unstrung after a couple hours braced and pulling to 21”.  My weight scale needs new battery so will have to update my draw weight.  I think if I were to guess it’s around 48-50lbs right now at 20”.  Bend looks pretty decent so far.  I lost about 2-2.5” of reflex.  I’m at about 2” reflex now.  Will likley loose little more yet.  Kinda what I was expecting to see with this one. 

https://photos.app.goo.gl/wQBFYyTVdmBN7S3k9
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Offline Hamish

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Re: Yew billets belly drop build with sinew backing.
« Reply #78 on: February 22, 2024, 06:11:18 pm »
Dave, these bows are turning out beautifully.

Offline superdav95

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Re: Yew billets belly drop build with sinew backing.
« Reply #79 on: February 23, 2024, 10:40:45 pm »
Thanks hamish!   Much appreciated. 
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Offline superdav95

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Re: Yew billets belly drop build with sinew backing.
« Reply #80 on: February 23, 2024, 11:15:00 pm »
I got an hour to work on getting the other sapwood stave bow floor tillered and braced up today in between my sap runs and boiling my syrup.  Lots of sap running here now.  Gotta get while the gettin is good.  Anyway.  The reflex of this wonky yew Bow ended up with about an inch more give or take then the heartwood only bow.  Both as you recall had the same amount of sinew apply 65-70grams.  The major difference with the way it was applied.  The heartwood version had its sinew put on with tb3 and the sapwood version with standard sinew glue which I made here.  I had back strung both for about 3 weeks monitoring the weight loss of each over this time.  The heartwood bow is a little heavier in mass which is no surprise as it’s got more heartwood relative to the other.  The interesting thing I’ve noticed about the two bows early on at brace is that after leaving both braced up for several hours to let thing settle nice the sapwood version retained more reflex.  Both bows have been pulled to about 20” approx.  both feel about the same weights.  No draw scale at moment.   As far as mass of both bows at the moment they are pretty close the same around 650grams.  Both are about 60”ntn.  The sapwood version is a semi hollow limb.  I decided to do this as it had little more crown then I liked.  This helps to even out the stresses a bit.  Bend looks good and will continue tomorrow. 

Observations,

Heartwood only bow—-
Prior to floor tiller and bracing 4.25” reflex
After braced for approx 4 hours immediately returned to 2” reflex
30 mins resting it crept back to 3.25” reflex

 
Sapwood bow—-
Prior to floor tiller and bracing just over 5” reflex
After braced for approx 4 hours immediately returned to 3.25” reflex
30 mins resting it crept back to around 5” reflex. 

I half expected this out of the heartwood bow that had tb3 binding the sinew.  The sapwood version held much more reflex so far. 

I realize it’s still early on in the process but it kind of confirms my suspicions even this early.  The benefits of using hide or sinew type glue as opposed to tb3 is noticeable even now.  I’m sure both will be decent shooters.  Will be interesting if it becomes noticeable in the way they shoot and on the cast of each. 

Here’s some pics link below for better quality pics

https://imgur.com/a/E8BqOAM
« Last Edit: February 23, 2024, 11:21:59 pm by superdav95 »
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Offline superdav95

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Re: Yew billets belly drop build with sinew backing.
« Reply #81 on: February 24, 2024, 04:54:07 pm »
Testing out pictures uploaded to pa using imgr










« Last Edit: February 24, 2024, 05:59:06 pm by superdav95 »
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Offline mmattockx

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Re: Yew billets belly drop build with sinew backing.
« Reply #82 on: February 26, 2024, 01:10:53 pm »
Since no one else has said anything, I will. Thanks for taking the time to switch, it's great to see pictures that are large enough to see details and really show the finer points of the bow. Not only do you not have to futz around with resizing, but everybody looking at the forum gets a much better experience out of it.


Mark

Offline superdav95

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Re: Yew billets belly drop build with sinew backing.
« Reply #83 on: February 26, 2024, 04:25:04 pm »
Since no one else has said anything, I will. Thanks for taking the time to switch, it's great to see pictures that are large enough to see details and really show the finer points of the bow. Not only do you not have to futz around with resizing, but everybody looking at the forum gets a much better experience out of it.


Mark

Thanks mark!  It took me long enough…
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Offline Pappy

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Re: Yew billets belly drop build with sinew backing.
« Reply #84 on: February 27, 2024, 09:17:31 am »
Beautiful work for sure, you do some awesome work. :) Pictures turned out great also.  :)
 Pappy
Clarksville,Tennessee
TwinOaks Bowhunters
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Offline Selfbowman

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Re: Yew billets belly drop build with sinew backing.
« Reply #85 on: February 27, 2024, 01:51:14 pm »
Dave what did total mass come out at? Being yes those probably light in mass .
Well I'll say!!  Osage is king!!

Offline bjrogg

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Re: Yew billets belly drop build with sinew backing.
« Reply #86 on: February 27, 2024, 02:03:56 pm »
Those are looking nice Dave

Bjrogg

PS I never did figure out how to post pictures from Imgur. Maybe if I didn’t get distracted by all the pictures of pretty ladies
A hot cup of coffee and a beautiful sunrise

Offline superdav95

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Re: Yew billets belly drop build with sinew backing.
« Reply #87 on: February 27, 2024, 03:23:07 pm »
Beautiful work for sure, you do some awesome work. :) Pictures turned out great also.  :)
 Pappy

Thanks Pappy!  Ya I figured it was time to figure that pictures thing out. 
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Offline superdav95

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Re: Yew billets belly drop build with sinew backing.
« Reply #88 on: February 27, 2024, 03:25:02 pm »
Those are looking nice Dave

Bjrogg

PS I never did figure out how to post pictures from Imgur. Maybe if I didn’t get distracted by all the pictures of pretty ladies

Thanks bjorgg!   Ya I get distracted easily at times by certain things…. 
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Offline superdav95

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Re: Yew billets belly drop build with sinew backing.
« Reply #89 on: February 27, 2024, 03:27:54 pm »
Dave what did total mass come out at? Being yes those probably light in mass .


The final mass of the heartwood only bow is around 648grams.  Still a little more to shave off yet. 

The sapwood one is little lighter at 630grams and I have not shaped the handle yet.  I estimate it will be around 600-610grams.  I went a semi hollow limb design on this one due to the fairly high crown. 
Sticks and stones and other poky stabby things.

superdav95@gmail.com