bamboo lams

[ocd]

have a good working formula for the stackup of the rd longbows I make. I have been using red elm for the cores. I would like to try some bamboo cores. My question is can I use the same stack up numbers for the bamboo as I have been using for the red elm?

[kennym]

Here is from a bow test I did a few years back...

64" length
.355 total stack
.003" per inch total taper
4 wood lams
2 pcs black glass
18" riser
10 strand D97 endless string
brass nockset

Here is the data,I used the same arrow for all bows(sorry,limited time with hootershooterbefore sending one bow to charity auction!)

The arrow weighed 437 grains

All bows chronoed at 28" draw length

Actionboo bow
48 #
181.1 fps

Maple bow
49#
182.1 fps

Red elm bow
49.8#
183.0 fps

Walnut bow
46.5#
181.1 fps [TYPO !!! Shoulda been 180.8!!]


Hope this helps!

[kennym]

The red elm was edge grain also...

[ocd]

thanks kenny I appreciate you taking time to answer.I had forgotten about your bow test there was a lot of useful info there thanks