Re: [ATM] Alternative to lead?

[artbianconi@blast.net]

If the people at this site are incapable of making the distinction between 
magnetic and non magnetic materials and don't know that steel should be used, 
we have a far more serious problem to deal with,

To:             	artbianconi@blast.net
Copies to:      	atm@atmlist.net
Date sent:      	Sun, 11 Jul 2004 12:59:05 -0700
Subject:        	Re: [ATM] Alternative to lead?
From:           	Jarvis Krumbein <jkoptic@juno.com>

> The metal strip better be iron or steel.   Aluminum, brass
> or copper being non magnetic won't work.
> 
> Jarvis Krumbein, <jkoptic@juno.com>
> 
> On Sun, 11 Jul 2004 14:31:17 -0400 artbianconi@blast.net
> writes: > Wish I could take credit for this idea. I can't >
> > Ceramic magnets are quite popular in audio speakers and.
> the higher > the > wattage rating of the speaker, the
> heavier the magnet that is needed > to control > the voice
> coil. > Attach a metal strip in a place on the tube that is
> easily reached > and at a spot > where the cg of the system
> can be system can be influenced. Space > that metal > strip
> so it brackets the existing CG and attach it with velcro or
> > double sided foam > tape. Now balance the telescope simply
> by sliding the speaker magnet > in > whatever direction gets
> the job done. > > Art Bianconi > >
> 
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