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 - 12:44:39 CEST