Re: motor stick bending

From: William Gowen <wdgowen_at_gmail.com>
Date: Fri, 22 Feb 2013 13:00:00 -0500

IMHO the problem with the problem is the term "identical motor sticks".
It think the variability in wood prevents an absolute answer to the
question. To me it always boils down to cut and try. If I have two
pieces of wood that seem like good candidates then I would make MS's
from both and test to see which was best.

Another problem is in what cross section you are using for the MS. Are
you more concerned more with torsional stiffness and therefore go to a
squarish cross section or are you concerned more with bending strength
and go with a more rectangular cross section? It's POSSIBLE that the
choice of grain orientation would be better at one shape than the other
but for me it would be guesswork as to which would be better.

All that being said most of my motorsticks are cut from A or A-B wood.

On 2/22/2013 9:11 AM, Warthodson_at_aol.com wrote:
>
> A debate is raging in our local club. So far the vote is tied. We need
> your input.
> Imagine two identical motor sticks, same dimensions, same weight, etc.
> When viewing the motor stick from the side, one is made from "A" grain
> & the other from "C" grain wood. Which will resist bowing better,
> which will resist twisting better?
> Thanks,
> Gary
>
Received on Fri Feb 22 2013 - 10:00:01 CET

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