2WD from 1 motor - Can it support the stress?

[Vanarian]

I realised recently that I have almost 40Nm of raw couple to play with in my motors, so I'm figuring that maybe I could tame this a bit by dividing it between 2 wheels instead of 1 FWD with full torque. (I think FWD would still be a better layout to ride though, less "fall on your back!" force to counter I think).

Have you ever experienced the matter? Do the motor support the load applied by wheels trying to rotate at different speeds? I don't want to warp mines by doing this.

Am I correct when I think that without a kind of clutch it is just like a welded diff in a car, equals lots of slides?

 

[psychotiller]

Most people are going to say you need a differential. That your outside wheels will turn faster than your inside wheels. That being said. It shouldn't work very well. I think though, that because your truck turns from a center point rather than your wheels turning individually, outside on spindles-like a car, that it really won't make a noticeable difference.

And all of that said, driving two wheels with one motor isn't going to benefit you in any way. If you're doing it just to see if you "can" do it then I think it's worth it just for the sake of building something new.

 

[Vanarian]

Thank you for the lights

Well I was more thinking of AWD to get more traction and split the torque between wheels? Truly a 2WD on a board truck might be a waste without a proper differential but I build inlines skates so the 2 driven wheels are on the same side / follow almost the same track. Still the frame is rigid with no pivot apart from giving an angle with the skate when cornering and I have no idea if both front and rear wheel spin at the same speed.

 

[torqueboards]

Yeah, I doubt it's worth the effort also. You might as well run 2x ESCs + 2x Motors and be on the safer side.