John in CR
100 TW
I have a dual motor friction drive that I've yet to mount as it's too wide and heavy with a pair of wheelchair motors. I took 2 of the EV Warrior rollers and inserted them into one larger roller, so the clutch bearings in the EVW roller allow either, both, or neither motor to be in use. I want to swap the motors out for a lighter smaller unit, by using either 2 Kollmorgens with voltage boosted to 48V, or a pair of RC motors. I really appreciate the input in the thread, because now I know over 40mph is ok with friction, and I need to do some homework regarding a rig for variable pressure on the tire.
Going with dual RC motors, it might make more sense to use 2 of those EV Warrior rollers instead of the route I took, since their 1.3" diameter would put you at 38mph at 10rpms. The rollers themselves are some type of hard metal and have a diamond pattern I could never equal.
Regarding wet conditions, I remember 1 member who swears by friction drives and has used a friction drive wet and dry for years and still has the same tire. I think all that's needed is the right roller, though muddy conditions would obviously be a problem.
John
Going with dual RC motors, it might make more sense to use 2 of those EV Warrior rollers instead of the route I took, since their 1.3" diameter would put you at 38mph at 10rpms. The rollers themselves are some type of hard metal and have a diamond pattern I could never equal.
Regarding wet conditions, I remember 1 member who swears by friction drives and has used a friction drive wet and dry for years and still has the same tire. I think all that's needed is the right roller, though muddy conditions would obviously be a problem.
John