Author Topic: Efficient youth bows  (Read 1134 times)

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Online Louie

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Re: Efficient youth bows
« Reply #15 on: June 18, 2018, 12:51:20 am »
Hi Matt
Im also a saffer. Where in S.A. are you situated?
One of the greatest paradoxes of your physical senses, is that your eyes actually show you what you believe, not what you see.

Offline MattTheClueless

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Re: Efficient youth bows
« Reply #16 on: June 18, 2018, 12:57:35 am »
Hi Matt
Im also a saffer. Where in S.A. are you situated?

Hey Louie, I'm based in Jo'burg. Fourways.

Online Louie

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Re: Efficient youth bows
« Reply #17 on: June 18, 2018, 02:03:56 am »
I'm in the cape. I can help you source wood like ipe, massaranduba, hickory, white oak, elm, maple. Send me your number in a PM and I'll gladly help you out. There are a few fantastic bowyers here in S.A.
Welcome to the addiction.
One of the greatest paradoxes of your physical senses, is that your eyes actually show you what you believe, not what you see.

Offline MattTheClueless

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Re: Efficient youth bows
« Reply #18 on: June 18, 2018, 03:09:50 am »
I sent you a PM, but not sure it went through. I'll try again.

Offline bubby

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Re: Efficient youth bows
« Reply #19 on: June 18, 2018, 08:05:24 am »
If she has a 22" draw build a pyramid bow about 56" long, plenty of length for that draw weight. Siyahs are probably above your skill level
failure is an option, everyone fails, it's how you handle it that matters.
The few the proud the 27🏹

Offline bubby

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Re: Efficient youth bows
« Reply #20 on: June 18, 2018, 08:07:07 am »
failure is an option, everyone fails, it's how you handle it that matters.
The few the proud the 27🏹

Offline MattTheClueless

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Re: Efficient youth bows
« Reply #21 on: June 18, 2018, 08:27:22 am »
http://www.primitivearcher.com/smf/index.php/topic,35312.msg464947.html#msg464947
Try this build a long just make the bow shorter

Thanks bubby, that's pretty much exactly what I'm doing. I've got my bow roughed out, and will start rough tillering tomorrow. Just don't have the time tonight.

Are siyahs technical to build? I was considering gluing and wrapping static recurves onto the tips. Even if at a slight angle, would that not add any effect?

Offline MattTheClueless

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Re: Efficient youth bows
« Reply #22 on: June 22, 2018, 06:51:20 am »
Update:

I have been following Bubby's guide on a simple flat bow. During tillering a crack suddenly appeared by the handle. Is it firewood? Could it be used as a 30# bow instead of a 45#? I've even backed it with fibreglass drywall tape to try protect it.

Any advice would be appreciated. I'll post a photo soon.

Offline MattTheClueless

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Re: Efficient youth bows
« Reply #23 on: June 22, 2018, 07:08:42 am »
Here you can see the crack. About 1/2 an inch off the fader.

https://photos.app.goo.gl/BHQ6mz7RuKra7Xkt6

Sorry about the link. It wouldn't let me share it here.

Offline DC

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Re: Efficient youth bows
« Reply #24 on: June 22, 2018, 07:15:05 am »
Doesn't look good. Is the back of the bow at the bottom of the picture?
Vancouver Island
If you don't have any questions you must not be paying attention.

Offline MattTheClueless

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Re: Efficient youth bows
« Reply #25 on: June 22, 2018, 07:30:37 am »
Yup the bottom is the back.

I've since sanded it down a lot, applied fibreglass drywall tape, and stuck that down with tb3.

Enough to keep it safe at 25#?

Offline DC

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Re: Efficient youth bows
« Reply #26 on: June 22, 2018, 08:20:45 am »
I've never used FG tape. I would throw it away and start again. It's hard to help when I've no experience with the wood you're using but I would guess that the wood is no good or you bent it too hard. Were you using a scale?
Vancouver Island
If you don't have any questions you must not be paying attention.

Offline MattTheClueless

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Re: Efficient youth bows
« Reply #27 on: June 22, 2018, 11:55:50 am »
Were you using a scale?

No I wasn't. That's the problem. I was just going on feel, and what I assumed was 50# was probably more like 70#. The wood itself works well though, by the way. Garapa / Brazilian Ash. Definitely worth a look in.

I'll try and turn it into a proper light bow, and if it fails then it fails. I've got another identical board to try again.

Offline DC

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Re: Efficient youth bows
« Reply #28 on: June 22, 2018, 12:51:48 pm »
A five gallon bucket almost full of water weighs about 40#. Try something along those line. You may prefer cubic hectares per fortnight or somesuch ;D ;D ;D
Vancouver Island
If you don't have any questions you must not be paying attention.

Offline bjrogg

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Re: Efficient youth bows
« Reply #29 on: June 22, 2018, 01:19:42 pm »
Not thinking that one is going to make it Matt. I've never used FG tape but really can't imagine it taking that much stress. I'd be looking for another piece of wood. I really couldn't tell from picture. Was it a board? Did the grain run off the back there? Was the tiller poor? Most stress is right out of handle. To relieve the stress it must be evenly spread over the entire limb. This is achieved by tapering the width and or the thickness to make a evenly bending bow. The two most important steps in bow building are a clean unviolated ring on the back, and probably even more importantly a well tillered belly. It can be heart breaking, but we need to learn from our failures as well as our successes. Never draw your bow to a heavier weight than you want it end up at. If it's bending to much in one area and then stiff just past it don't keep bending it. Put a pencil mark x at the bend(hinge) and don't remove wood from that area. Put pencil mark lines where it's not bending and scrape off the lines. Take your time. This is where you really become a bowyer.
Good Luck and keep on trying
Bjrogg
A hot cup of coffee and a beautiful sunrise