Re: Partial motor stick

From: Leo Pilachowski <leop_at_lyradev.com>
Date: Mon, 16 Jul 2012 22:33:22 -0000

I use balsa dummy motor sticks for all of my indoor planes, including Science Olympiad and LPP which get wound to over 1 oz-in of torque. While 5# balsa is too weak, balsa above 15# is just fine although I do use 20#+ balsa for the LPP dummy sticks. I use 1/8" for the SO planes but everything else now 3/32". This is plenty strong enough in my experience. Balsa is an amazing material. For a given density, it has the best Young's modulus and strength of just about all the available woods, including Sitka Spruce.

Leo

--- In Indoor_Construction_at_yahoogroups.com, "John Kagan" <john_kagan@...> wrote:
>
> --- In Indoor_Construction_at_yahoogroups.com, Jake Palmer <82.jake@> wrote:
> >
> > I'm not John, but I'm also in the process of building new partial sticks.
> > I had a balsa stick break during unwinding at the Kibbie Dome this year so
> > my new sticks are 3/32 square basswood with .015 wire. They're much more
> > durable and require virtually no clay.
>
> ^^ this
>
> Balsa is too weak
>
Received on Mon Jul 16 2012 - 15:33:23 CEST