New Turkish hornbow

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mikekeswick
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New Turkish hornbow

Post by mikekeswick » Mon Jul 15, 2013 2:47 pm

Hi guys, here are a couple of pictures of my latest Turkish bow.
I'm hoping i've learnt the lessons that my first few attempts at these bows have taught me.
This bow has slightly longer sals, the thinnest spot is closer to the kasan eyes and the reflex in the core at the kasan eyes is lower, the sinew is flatter than before and the belly more rounded and finally my tips are a little shorter. My first bows have all suffered from instability problems hence the above changes.
Any advice on the shape, amount of bending at the kasan eyes etc would be gratefully accepted. This bow has shown only a tiny bit of twist at one kasan eye so far which was corrected only with pressure, if it keeps showing up during stringing i'll use a little heat on it. One limb was also a little stronger but a few scrapes has sloved that. So far i'm very happy with as it was perfectly stable when first strung.
mikekeswick
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Post by mikekeswick » Mon Jul 15, 2013 2:48 pm

mikekeswick
Posts: 404
Joined: Tue May 05, 2009 11:01 am
Location: Durham,Engalnd

Post by mikekeswick » Mon Jul 15, 2013 2:50 pm

The un-strung picture is immediately after being strung for about 30 mins.
Stilian Stefanov
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Post by Stilian Stefanov » Tue Jul 16, 2013 10:16 am

Great hero ... Big man you are, if you have the courage to kill animals for fun and glory. congratulations
Alessi Francesco
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Post by Alessi Francesco » Tue Jul 16, 2013 11:29 am

Nice shape, quite "conservative". I would lower the brace height.
Stilian, what are you trying to say?
mikekeswick
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Post by mikekeswick » Tue Jul 16, 2013 3:44 pm

Stilian Stefanov wrote:Great hero ... Big man you are, if you have the courage to kill animals for fun and glory. congratulations
Fun and glory??? Well you are welcome to your opinon however wise people reserve judgement until they know the facts. We have a saying - ' don't judge a book by its cover'.
mikekeswick
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Post by mikekeswick » Tue Jul 16, 2013 3:48 pm

Alessi Francesco wrote:Nice shape, quite "conservative". I would lower the brace height.
Stilian, what are you trying to say?
Indeed it is conservative :D That was my intention with this bow. It is braced around 7 1/2 inch in that photo and i'm pretty sure it is stable enough 'as is' to be fine with a lower brace. I have made it with the intention of being able to shoot it at field archery competitions where it will be strung all day.
Stilian Stefanov
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Post by Stilian Stefanov » Tue Jul 16, 2013 10:52 pm

Excuse me, but when he saw the animal cruelty I get nervous ...
Alessi Francesco
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Post by Alessi Francesco » Wed Jul 17, 2013 9:11 am

What cruelty? Do you mean the use of animal materials? Are you the same guy that made the bulgarian bow? Did you have some kind of vegan conversion in the last few months? Anyway, I don't think that this is the right forum for you: if you are offended go somewhere else.

Francesco
Stilian Stefanov
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Post by Stilian Stefanov » Wed Jul 17, 2013 11:44 am

Francesco, it's not about that, mikekeswick was uploaded photos of him dead squirrels and birds with a slingshot but i apologized for his reaction. I apologize again. Yes, I'm the one who made the Bulgarian bow, and this forum is just for me.
mikekeswick
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Post by mikekeswick » Wed Jul 17, 2013 1:50 pm

Here is a picture of the bow drawn to 21 inches.
I keep hearing a bit of a noise from the top limb.....i've looked very closly and there are no signs of delamination. I really can't figure it out other than it only happens when drawn to around 20 and doesn't do it every time it's drawn??
http://i492.photobucket.com/albums/rr28 ... kish21.jpg
mikekeswick
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Post by mikekeswick » Wed Jul 17, 2013 1:52 pm

I'm thinking that possibly it's just the string catching on the side of the tip during the draw. I will check if that is the problem after some food!
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Bede
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Post by Bede » Thu Jul 18, 2013 8:16 am

Without being there it is hard to be accurate, but do you think you might be putting a little twist into the bow from the bow hand. I am not talking about major distortion.
Bede
scemdonmez
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Post by scemdonmez » Thu Jul 18, 2013 4:31 pm

Congrats, good work. Kasan looks short, there is no big stress in your bow so it can stay strung for a long time.

Cem
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Kviljo
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Post by Kviljo » Thu Jul 18, 2013 6:17 pm

Interesting bow! I'd also lower the brace height a little, although I'm sure it would not need it because of stress. Don't they say that bows like this one, with short kasans, perform better at lighter draw weights?

How would you say the stacking in this one compares to the other turkish bows you've made? I suppose some extra stacking from the geometry of the bow would be countered by the extra reflex it ought to keep?
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