Primitive Archer

Main Discussion Area => Bows => Topic started by: Mark Smeltzer on August 28, 2018, 09:29:16 pm

Title: Flight bow failure
Post by: Mark Smeltzer on August 28, 2018, 09:29:16 pm: Been playing around with this design specifically for flight Archery. It shot super fast but I may have pushed it too far. Here's what it looks like after it turned inside out on me. It was 60" 50# @ 25"...ish Sinew and Pacific Yew.
(https://beta-static.photobucket.com/images/k100/Bowmakr/s0/dde7157a-0cb7-40a7-a0d0-7327176b6e1c-original.jpg?width=1920&height=1080&fit=bounds) (https://beta.photobucket.com/u/Bowmakr/p/dde7157a-0cb7-40a7-a0d0-7327176b6e1c)
(https://beta-static.photobucket.com/images/k100/Bowmakr/s0/33b698ee-ccb0-44c2-82a5-ee3306d5cf7c-original.jpg?width=1920&height=1080&fit=bounds) (https://beta.photobucket.com/u/Bowmakr/p/33b698ee-ccb0-44c2-82a5-ee3306d5cf7c)
Title: Re: Flight bow failure
Post by: osage outlaw on August 28, 2018, 10:21:33 pm: Ouch :o
Title: Re: Flight bow failure
Post by: DC on August 28, 2018, 10:43:34 pm: That'll buff right out ;D ;D
Title: Re: Flight bow failure
Post by: bjrogg on August 29, 2018, 04:12:58 am: Quote from: DC on August 28, 2018, 10:43:34 pm
That'll buff right out ;D ;D
Hehe that's a funny one DC. Nice try Mark. I've seen Ed do them with sinew backing and horn belly. Always impressed to bageebeis out of me.
Bjrogg
Title: Re: Flight bow failure
Post by: Del the cat on August 29, 2018, 05:41:22 am: Bwhaaaaaa :'(
Del
Title: Re: Flight bow failure
Post by: Mark Smeltzer on August 29, 2018, 07:21:02 am: I bet the horn belly would help and I lost too much heart wood on tillering I think. Wider and flatter for the next one. That did sting a bit and sure gets your attention quickly :o
Title: Re: Flight bow failure
Post by: Marc St Louis on August 29, 2018, 07:23:46 am: That is nasty. High reflex bows can be very touchy especially at first brace and any sideways bend has to be dealt with right away
Title: Re: Flight bow failure
Post by: BowEd on August 29, 2018, 07:44:47 am: Mark I see no pics of your bow.
Title: Re: Flight bow failure
Post by: upstatenybowyer on August 29, 2018, 09:20:53 am: Well at least the sinew came off pretty clean! Sorry for your loss.

RIP
Title: Re: Flight bow failure
Post by: DC on August 29, 2018, 09:27:26 am: Did the sinew come off or did it split the wood?
Title: Re: Flight bow failure
Post by: Mark Smeltzer on August 29, 2018, 10:03:46 am: When the bow turned inside out after the shot, the belly failed as there was nothing to stop the tips from continuing forward. I pulled the sinew off myself. This was a very unstable and sensitive bow and I was shooting it at a fairly low brace.
Title: Re: Flight bow failure
Post by: Eric Krewson on August 29, 2018, 02:38:22 pm: Sinew will pull a weak bow apart. I tried to glue up the crack but it pulled apart again.
Title: Re: Flight bow failure
Post by: Mark Smeltzer on August 29, 2018, 06:15:45 pm: Definitely some power in sinew and I laid it on pretty thick with a high crown for that one.
Title: Re: Flight bow failure
Post by: George Tsoukalas on August 30, 2018, 07:43:19 am: Wow!
I've had sinew pull apart but I don't think I've had a break like that.
But I don't push limits.
Jawge
Title: Re: Flight bow failure
Post by: loefflerchuck on August 30, 2018, 09:24:56 am: That will happen with a narrow tip contact recurve. I had that happen the other day with sinew backed juniper. 60" long with 5" reflex. 50# @ 28". In my case the low brace saved it from breaking. It still shoots fine. I had just added little horn nocks that increased the recurve just a tiny bit and made this happen. I got home and filed in new nocks 1/2" below and it's back to stable again.

Eric, my most used personal bow has huge cracks like that all up and down the sides. 49" sinew backed juniper 25-26" draw 48#. I have shot it thousands of times over the last 3 or 4 years. I started to see little signs of wood cell breakdown on one section of the limb finally but have never had a problem with these sinew cracks except they are ugly.