Non backdrivable drill transmission

[Dan Richardson]

Originally Posted by GrantN27

We are also looking into some type of a non-reversible transmission with the clutch.

Ri3D used a Modulox gear box and a mechanical clutch unit to accomplish this and it can be seen in this youtube video at about 1:30. Definitely worth a look.

http://www.youtube.com/watch?v=SWO9OE8JZZk

I would like to help in any way I can but my team is a bit stumped with this system.

The CAD for this gearbox was also posted on the Robotin3days.com website here: http://wp.me/p2Y6Na-eL

Should provide more information on how it was assembled.

We were happy with the performance of the ratcheting wrench. The tightening torque on grade 8 1/4-20 bolt is 12 ft lbs which would make me assume the average ratcheting wrench would able to handle this load or slightly higher.