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From: Frank Pittelli <frank-at-rctankcombat.com>
Subject: Re: Newbie to the Hobby needs help. [TANKS]
Date: Sat, 06 Jan 2007 10:24:46 -0500
Reply-To: tanks-at-rctankcombat.com

Leonard Beale wrote:
> Greetings from Birmingham, AL.  I am new to the hobby and to RC. I have 
> started construction on the hull and turrent. I am using a 4 channel 
> radio and I am now stuck on controlling rotation to the turrent. RealIy 
> couldn't find a solution to my problem on the forum.  I though about 
> maybe using a sail servo due to the limitations of the servo that came 
> with the radio (60 degree rotation). I do have have on reversiable dc 
> motor I puulled from an old printer. Please help with a possible 
> solution. Thanks all.

Take a look at the MAG Speed Control described here:

        http://www.rctankcombat.com/articles/speed-control/

It's actually an "on-off switch-based H-bridge motor control" but we're 
lazy in Maryland, so we call it a "speed control" :-)

        Frank P.