Quote:
Originally Posted by Alex.q
The most trouble we've had with AM wheels and treads was in a crab drive; some treads fell off, some got ripped up and lost the outer layer of tread (granted, this was by the fall and would most likely have happened regardless of the wheel).
Anyway, my reason for posting. We have never (to my knowledge) broken a 4" or 6" plaction wheel, but on our 2010 bot during a demo at the state fair, we destroyed two pairs of 8" plactions. Apparently our driver was excited and took off over the bump, came down and bent and snapped the spokes in the plastic wheels. I wonder if we have a picture of them... I think the smaller wheel sizes are plenty strong; the larger ones may be comparatively weaker, I don't know for sure.
|
Maybe, but we've rolled a robot down the 2010 bump onto 8 inch plaction wheels (which would likely involve the robot being supported by the side of the wheel at some point, which it probably wasn't designed for) and they were just fine. And that was just one impact out of many. The biggest issue with placation wheels seems to be that teams are too reliant on their precious liquid thread-locking products when nylon insert lock-nuts work just fine.