marker elevation servo - how beefy ? [TANKS]

["Doug Conn" <dwconn404-at-comcast.net>]

At the tank expo, the experienced builders recommended that I use a much more powerful servo to control my marker elevation. I’m thinking about using one of these:

 

http://www.servocity.com/html/servo_power_gearboxes.html

 

But I’m not sure how much power I need. I know, I know, you’re saying I should just use the moosiest one available. I’d like to keep the size down, however, and the cost too. Does anyone have any experience using these things to elevate a marker ?

 

Thanks,

Doug

 

P.S.  

Moosy: adjective, TANK SLANG. Having the qualities of a moose. Big, powerful, and ugly.