pic: Quick-Change Chassis 2

[Kevin Thorp]

Originally Posted by Ari423

I'd be interested to know what size/kind of wheels you have used with the worm gearboxes and haven't had an issue with backdriving. Especially in 2014, which was basically one big pushing match in many regionals, I am surprised you haven't run into issues with the gearboxes breaking.

Also, the fact that some of your older gearboxes became backdriveable worries me. That means that either your worms or worm gears (or both) are wearing to the point that they have changed shape. I can only imagine that that means the gearboxes are less efficient. I wouldn't be surprised if this effects auto modes as the gearboxes wear throughout the season.

There are 2 threads discussing this gearbox/chassis concept. I described our wheels in the other thread: https://www.chiefdelphi.com/forums/showthread.php?t=152912

Maybe "in theory" right angle worm gearboxes are not the best choice, but in reality they've worked very well for Team 3489, including helping us win the Motorola Quality Award at Smoky Mountain in 2014.