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R: counter wieght queistion



Hi John K6YK,

Normally i put a small counterweight in the front side of the array in
order to get the antennas a little bit  unbalanced with more weight  to
the director side.

This unbalance force the gears teeth in contact and eliminate any
back lash in the gear box so that the elevation pointing and the
control box indication are more accurate.

In addition if the antennas are exactly balanced in weight it happens
that any weeak flow of wind put the system going up and down
in to the space between the same last gears
teeth.............tic.tac.......tic...tac
and is this continuous movement in the same point that wears the metal,not
the gears operation.

73" de i8CVS Domenico



----- Original Message -----
From: John W Lee <k6yk@juno.com>
To: <brucenol@abs.net>
Cc: <molou@big-river.net>; <amsat-bb@AMSAT.Org>
Sent: Saturday, June 29, 2002 3:45 AM
Subject: Re: [amsat-bb] counter wieght queistion


> I also had to put  a small counterweight when I put two small beams
> (back-
> mounted) on my  U-100 elevation rotor.  It would not go "up" with all the
> weight
> on one side of the cross-boom.    So I put a short piece of  angle
> aluminum with
> a couple of pounds of weight on it out the "back side" to balance it out.
> Worked
> fine.
>
> 73,
> John, K6YK
>
>
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