Panther G,
If you don't wish to reinvent the wheel, our fine friends at H.E.A.T. Armor club have already worked this out. Here's a link:
<a href="http://www.heatarmor.com/phpbb/viewtopic.php?f=16&t=648">
http://www.heatarmor.com/phpbb/viewt...f=16&t=648
</a>
I've successfully done it myself on a JT using their instructions and a micro-servo. I do recommend using a camera positioner switch instead of the servo rate reducer. (I don't think this was available when that post was made. I'm sure they're using it now).
http://www.dionysusdesign.com/produc...4ca9c40581fb2a
Works great.