Wood species difference

Buemaker · April 03, 2019, 09:57:40 AM

Take a look at these two trilam ELB. Both were glued up with the same backset. Both are finish tillered. The one on the left is hickory, wenge and ipe and has taken just about no set at all.
The one one the right is hickory, purpleheart and lemon wood and has taken set. They are both the same poundage, but so different in thickness, that ipe is hard stuff.

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Buemaker · April 03, 2019, 10:00:05 AM

Sorry, this should have been in the what did you do today thread.

Roy from Pa · April 03, 2019, 10:07:59 AM

It's fine here, Bue..

BMorv · April 03, 2019, 10:22:26 AM

I think you got it in the right spot.

Nice experiment. That has been my experience too. Ipe doesn't take much set. It's just so strong as a belly wood.

Not a perfect apples to apples comparison, but the ipe/bamboo bendy took almost no set, and the osage self bow took about an 1".
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Flem · April 03, 2019, 10:39:30 AM

They both look nice, Bue. I'm wondering which one is more pleasant to shoot?

Buemaker · April 03, 2019, 11:05:19 AM

So far I have only shot them a few times with a tillering string, which is a bit elastic, could not feel any difference. Once I get hornnocks on and a fastflight string I may have to do a bit of adjusting. May feel some difference then.

Pat B · April 03, 2019, 08:34:53 PM

Hickory/ipe or hickory/osage are the best backed bow combos I know. I've only made a few tri-lams but for backed bows I don't think you can beat either of those combos.

Stagmitis · April 03, 2019, 10:36:42 PM

It would be interesting to see the physical weight between the two and which has better cast.

Flem · April 03, 2019, 10:45:22 PM

Bue, I for one would love to see those bows when you get them all finished up.

Flem · April 09, 2019, 09:57:57 AM

Bue, I have not been able to stop thinking about your ELB's
Would you mind sharing the dimensions of your lams?

Buemaker · April 09, 2019, 11:48:47 AM

Flem, I will check it out tomorrow. Have to go somewhere tonight.

Flem · April 09, 2019, 01:36:40 PM

Thanks Bue, your a good man. Have a Akvavit for me.

Buemaker · April 10, 2019, 06:03:38 AM

Okay Flem, got some numbers for you.I tapered all lams before glue up.
I have full lenght taper sleds that taper to both sides.
Thickness measurements are taken in the middle.
Hickory Wenge Ipe bow.
Hickory .130-Wenge .260- Ipe .350. Hickory .0015 taper- Wenge .003 taper-Ipe .003 taper.
Hickory Purpleheart Lemonwood bow.
Hickory .130-Purpleheart .200-Lemonwood .600.
Hickory .0015 taper- Purpleheart .0015 taper-Lemonwood .0015 taper.
The belly lams had of course to be adjusted when tillering.
Give or take a few thousands on measuring.
The bow with Lemonwood is 72 ntn, the other 71 ntn.
This yields bows about 45 pounds at 28 inch draw.
I think the density and hardness of Ipe can make some difference.

Flem · April 11, 2019, 01:19:36 PM

Thanks Bue! Your awesome

Maybe I should be cursing you for planting a seed I didn't need to have in my pea brain

I've been thinking about a Bamboo/maple/cherry ELB. I have full length wood for that combo.
Only ever made a non laminated ELB and that was a long time ago.

Buemaker · April 11, 2019, 02:48:47 PM

Got this couple finished, posting a couple of pics

Buemaker · April 11, 2019, 02:50:12 PM

Upper horns.

Buemaker · April 11, 2019, 02:51:26 PM

From side

Buemaker · April 11, 2019, 02:52:41 PM

Lower horns, one buffalo and one cow

Roy from Pa · April 11, 2019, 03:50:14 PM

Very nice, Bue.

I've always wanted to try that.

Flem · April 11, 2019, 04:20:08 PM

Those look great!

I'm guessing thats African buffalo, not North American Bison.