Author Topic: Dual shelf thickness (Read 2273 times)

ztontonz · « **on:** April 21, 2020, 04:22:09 PM »

I want to build a dual shelf kid bow and I am wondering what is the minimum thickness I should keep for the riser
Would 1/4” be enough with a wood riser?

I am thinking building it 10#@18”, roughly 20#@28”.
54” bow

Thanks

Flem · « **Reply #1 on:** April 22, 2020, 01:56:47 PM »

1/4" is not much meat. It would be pretty easy to grab the limbs and snap that by hand.

monterey · « **Reply #2 on:** April 22, 2020, 02:39:19 PM »

Also depends on how deep the riser is

ztontonz · « **Reply #3 on:** April 22, 2020, 05:30:03 PM »

Otherwise I was thinking about doing a g10 I-beam, just to be safe

Bvas · « **Reply #4 on:** April 22, 2020, 06:24:53 PM »

I’m with Flem. 1/4” would bend or break quite easily.

1/4” of G10 would be good, with the rest of the handle being wood.

Flem · « **Reply #5 on:** April 22, 2020, 06:26:57 PM »

G-10 sounds like a good idea. Either that or some titanium

Like Mike said, it does depend on how deep it is. But since you said it going to be a kid's bow, I doubt that riser will be more than a few inches deep. I can't think of any wood in a 1/4"X 3" dimension, that would be strong enough to last very long.

ztontonz · « **Reply #6 on:** April 22, 2020, 06:44:35 PM »

Thanks for all the advice

Mad Max · « **Reply #7 on:** April 22, 2020, 07:35:43 PM »

KISS=Keep It Simple Stupid

arrow paradox
I have made glass and selfbows 3/4" wide and 1-3/4" deep, no shelf, The arrow will go around and the kids will be Happy

50#@28"

monterey · « **Reply #8 on:** April 22, 2020, 10:10:43 PM »

Mark, the instant of seeing that bow I felt a huge urge to build one.

Regarding the kids bow, we are only dealing with 20#. Probably doesn't need anything, but four or five layers of glass should do it.

Mad Max · « **Reply #9 on:** April 22, 2020, 10:50:16 PM »

Yeah it needs to be tough too.
Here is a side view

monterey · « **Reply #10 on:** April 23, 2020, 12:09:09 AM »

Nice!

Mad Max · « **Reply #11 on:** April 24, 2020, 05:46:42 PM »

ztontonz
Keep us posted on what you doing

Overspined · « **Reply #12 on:** April 25, 2020, 09:04:57 AM »

Quote from: Mad Max on April 22, 2020, 10:50:16 PM

Yeah it needs to be tough too.
Here is a side view

Awesome

ztontonz · « **Reply #13 on:** April 25, 2020, 09:48:02 PM »

I decided to do a fiber beam, and luckily came across a left over sheet of g10. It’s thin but I think 5 sheets will do it

ztontonz · « **Reply #14 on:** April 25, 2020, 09:49:20 PM »

Quote from: Mad Max on April 22, 2020, 10:50:16 PM

Yeah it needs to be tough too.
Here is a side view

Is this riser spectra? I like the look!

Mad Max · « **Reply #15 on:** April 25, 2020, 10:01:14 PM »

Dymondwood (Cocobolo) from Rosewood
really thin layers, looks more like real wood.

ztontonz · « **Reply #16 on:** July 13, 2020, 12:35:16 AM »

So here is the bow I made my son. I didn’t reduce the thickness in the window too much. The g10 probably wasn’t necessary.

ztontonz · « **Reply #17 on:** July 13, 2020, 12:37:27 AM »

ztontonz · « **Reply #18 on:** July 13, 2020, 12:43:20 AM »

Built it a of my D/R mold, but with a 15” handle (usually 17”) and in a 56” length.
Two thin superlams. It pulls a good 17#@28”!

I am really surprised by the bend of these limbs. I find it more balanced than the 60” or 58” I did out of the same form.

Here is the bow at 28” & 29.5”

ztontonz · « **Reply #19 on:** July 13, 2020, 12:44:59 AM »

Now I’m thinking I have to make another one in the 45# range

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Author Topic: Dual shelf thickness (Read 2273 times)

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