Brett, Great - that is what I wanted to hear. There
is at least 8mg of boron by my calculations, plus
glue, so maybe 10-12mg overall weight savings, and
that could put me in the right ball park any ways. My
boom weighs 23mg, but I think I could make a slightly
lighter version.
Cheers
Chris
--- "Brett D. Sanborn" <08bdsanb_at_alma.edu> wrote:
> Chris, with that wood density and stick diameter, I
> don't think you need the boron. My 400mg 35cm uses
> lighter wood for the stick with no boron and it
> works fine. If I were to go with boron, I would
> probably use .003 on a model this size, since the
> weight of .003 is about 1/2 that of the .004.
>
> Brett
>
> ---- Original message ----
> >Date: Sun, 26 Mar 2006 12:00:27 -0800 (PST)
> >From: Chris Doughty <indoorff_at_yahoo.com>
> >Subject: [Indoor_Construction] A-ROG Motorstick
> Question
> >To: Indoor_Construction_at_yahoogroups.com
> >
> > Hey Everyone,
> >
> > I am working on an AROG with a target weight of
> > 0.25g.
> > So far all the components seem to be weighing in
> > well, except the 8" motorstick - it weighs
> 100mg. I
> > am using .008 5.2# wood on a 3/16" form, .009
> > music
> > wire, and 2 .004 boron. Do you think I really
> need
> > the boron, or can I save a couple milligrams and
> > remove it, and still have the stick be strong
> > enough?
> > Two pieces of .0005 tungsten are also bracing
> it.
> > On
> > the other A-ROGs that are in this weight regime,
> the
> > plans don't specify if boron is used or not.
> >
> > Thanks for your advice
> >
> > Chris
> > http://www.nrg.to/doughtyhobbies
> >
> >
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Received on Sun Mar 26 2006 - 15:37:45 CEST