Redesign, 36mm question.

[Dan Richardson]

http://www.chiefdelphi.com/media/photos/26796

5' long arm 2 banebot 36 mm motors, However we we are using 125:1 gearboxes with a futher 6:1 on chain.

This was done for speed tho, and torque was not the factor.

It lifts the arm no problem, back drive was a small issue but we made some modifications and now it stays where ever we put it.

If your wondering about torque, these motors can handle it. The gearboxes are something to worry about potentially, but we've been running it for about a day and not seen any of the problems that other people have been seeing. Its run enough for me to be happy with it. ( Maybe 200 cycles up and down? )

The arm weighs ~7.5 lbs with tube in tow. Its displaced over the distance of 5' b/c the pvc is like .75 lbs a foot or something, but the gripper ways ~ 2 lbs and the tube ~ 1lb.