Thanks for the info, i also found this site explaning how to mod the mg90s: http://robocraft.ru/blog/mechanics/595.html

I was thinking about using metal geared servos just for the weapon, and plastic geared for the drive.
Do you think the plastic ones will not last long enough?

The idea with this possible kit is to kids, and adults too, to have fun assembling them, learn a bit and the fight other kit bots. They will not be subjected to high impacts or spinners, the worse that can happen is get flipped (or some one dropping the robot to the floor...).

I will go to the RW101 forum and search around and maybe start this thread there.

Thanks guys :wink: