I just had an idea of possibly using servos as gearboxes. Together with these sprockets and chains at servocity, [link=http://www.servocity.com/html/hitec_servo_aluminum_sprockets.html]http://www.servocity.com/html/hitec_servo_aluminum_sprockets.html[/link], large metal geared servos with their electronics taken out might make good gearboxes specially for the T34. Gear sets are available should you strip any. What do you think? Has anybody tried this?