Re: Re: Partial motor stick

From: Jake Palmer <82.jake_at_gmail.com>
Date: Mon, 16 Jul 2012 15:52:32 -0700

Balsa can be strong enough, but it's usually not consistent. I have sheets
and sticks with huge variations in strength and density. Basswood on the
other hand tends to be very consistent. It's also not easy to find 15-20#
wood in a hobby shop unless you bring a scale and a calculator. I find it
easier to grab a few 3/32 square basswood strips without having to bother
with calculating density.

That said, if you have good 15# balsa it will work fine.

On Mon, Jul 16, 2012 at 3:33 PM, Leo Pilachowski <leop_at_lyradev.com> wrote:

> **
>
>
> 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_at_...>
> wrote:
> >
> > --- In Indoor_Construction_at_yahoogroups.com, Jake Palmer <82.jake_at_>
> 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 - 15:52:33 CEST