Primitive Archer

Main Discussion Area => Bows => Topic started by: makenzie71 on May 12, 2010, 01:55:52 pm

Title: Not sinew backing...but...
Post by: makenzie71 on May 12, 2010, 01:55:52 pm
what?  I've got some back sinew coming in that I can use for one project...but considering the amount I need for that project, I don't want to use it on my piddly time-wasters. I like bamboo backings and I'm int he middle of a horsebow that's boo-backed and working on decently, but next I want to make one a bit more aggressive.  My brother showed me a bit of info on hornbows sans the horn...bamboo was used instead.  It's intriguing and I want to make one...but then I'm back to not wanting to waste my sinew on piddly projects when I have a REAL Turkish bow to make.

I was curious what would be thought of trying to get the same general look with bamboo on both sides?  My mind has48" 1/8" strips back and (tempered) belly with a 1/8" ash or maple core, with 10" sayahs at 35~40*.  Little to no induced reflex.  I'm wanting 45~50lbs at 28".

Opinions?
Title: Re: Not sinew backing...but...
Post by: Kegan on May 12, 2010, 02:01:27 pm
I've seen several bows made like that before. They are supposed to perform better than sinew and horn styles at normal weights because the tempered boo is so much lighter than sinew and horn.
Title: Re: Not sinew backing...but...
Post by: makenzie71 on May 12, 2010, 02:04:21 pm
That's nice to know.

I'm also curious about how crucial proper grain is when the back and belly are bamboo?  I can get some edge-grained hickory, but I have no easy options for 1/8" slats with good grain.
Title: Re: Not sinew backing...but...
Post by: El Destructo on May 12, 2010, 04:41:26 pm
If both back and belly are going to be Tapered Bamboo....the Grain Orientation should have little effect on the Bow.....JMO
Title: Re: Not sinew backing...but...
Post by: Kegan on May 12, 2010, 05:25:02 pm
If both back and belly are going to be Tapered Bamboo....the Grain Orientation should have little effect on the Bow.....JMO

Especially if the wood is hickory.
Title: Re: Not sinew backing...but...
Post by: makenzie71 on May 12, 2010, 05:44:09 pm
Do you guys think edge-grain hickory would be suitable for this project?
Title: Re: Not sinew backing...but...
Post by: dragonman on May 12, 2010, 05:44:34 pm
What about boo belly, wood core and sinew back? Hornbow style, but replacing the horn with bamboo? I made one and it worked well.
Title: Re: Not sinew backing...but...
Post by: makenzie71 on May 12, 2010, 05:46:40 pm
...but then I'm back to not wanting to waste my sinew on piddly projects when I have a REAL Turkish bow to make.

:)
Title: Re: Not sinew backing...but...
Post by: El Destructo on May 12, 2010, 05:49:10 pm
I can certainly see nothing wrong with either setup....and edged grain is as strong as you will get....as long as there is no abundance of runoff.....James Parksler is The Man....when it comes to these Bows....JMO
Title: Re: Not sinew backing...but...
Post by: makenzie71 on May 12, 2010, 05:55:09 pm
I just emailed hiim.
Title: Re: Not sinew backing...but...
Post by: dragonman on May 12, 2010, 07:22:03 pm
thats not a piddly project and wouldn't you have to be a Turk in Turkey to make a REAL Turkish hornbow? ;D Actually I missread your post ???
Title: Re: Not sinew backing...but...
Post by: makenzie71 on May 12, 2010, 07:24:10 pm
It's a cheaper, less time consuming project than my Turk bow :)  I'm going to have some good money and a lot of time invested in it.
Title: Re: Not sinew backing...but...
Post by: james parker on May 13, 2010, 03:21:24 am
for a single core of hickory ,i would go for 5/16 + or -  a little,,that is at the center of the core,tapering to 1/8 at the tips.. make the boo  1/8 to 3/16 throughout their length,,keep the bow around 1 1/4 at the widest  off the fades to keep string follow and set down... a light to medium temper on the belly will do ,,over temper the belly and the # can triple,,if it does- scrape the belly to lower # and tiller..post pics of what you have already built and building ......good luck... :) james
Title: Re: Not sinew backing...but...
Post by: dragonman on May 13, 2010, 01:35:36 pm
That sounds like it will be a strong bow with the core that thick?
Title: Re: Not sinew backing...but...
Post by: makenzie71 on May 13, 2010, 01:52:49 pm
I think much the same...but I've not used hickory for much.  Like I said, I'm really wanting to keep the draw kind of low...55lbs tops.  A stronger bow I would end up just selling and I'd like to make a bow for me for once lol.
Title: Re: Not sinew backing...but...
Post by: james parker on May 13, 2010, 05:33:10 pm
here is an all wood and boo   turkish style bow i built last year,,55@29--48" groove to groove,,boo back,tempered boo belly..ipe and tempered boo core..3 lams,,maybe this will give you some ideas and help..................james

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Title: Re: Not sinew backing...but...
Post by: makenzie71 on May 13, 2010, 05:35:48 pm
Can you give me some rough dimensions on that bow?  It looks nice.
Title: Re: Not sinew backing...but...
Post by: james parker on May 13, 2010, 05:56:18 pm
1.25 at the fades..5/16 at centerof center core of ipe,1/8 tempered boo parallel lames
Title: Re: Not sinew backing...but...
Post by: dragonman on May 13, 2010, 08:15:05 pm
dont isten to me, Robustus has way more experience than I do, follow his advice
Title: Re: Not sinew backing...but...
Post by: makenzie71 on May 13, 2010, 08:44:04 pm
I just don't have access to that thick a piece of hickory...all I have are 1/8" edge grain veneers.  I only have red oak readily available outside of that.

I'm wanting to do static sayahs...how would you suggest I attach them, robustus?  Should I do the splice to the core wood and lay the back/belly over, or glue up the limbs and do a v-splice to the assembly?
Title: Re: Not sinew backing...but...
Post by: james parker on May 13, 2010, 08:49:16 pm
you can always glue the strips to make the core thicker,the more strips in the core the less string foolow you will have,and also retain more of the reflex

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