I’m so busy building that I still program with the BLDC-tool I haven’t heard anybody having problems with the other apps though. Derek especially liked the Ackmaniac’s because of the reverse function. He felt like he needed the reverse to fully stop (actually, to go back up again) when going downhill because he was big a dude.
For SDR, my motor Max/Min is 80A/-120A. For SDXL 60A/-80A. The XL has more drag when you let go of the throttle than the R (because of the lower kv) so you don’t need to crank up the braking that much. It also has more resistance, again due to low kv, so I don’t recommend going faster than 35 mph on them because too much speed heats up the XL.
I only do FOC, super quiet and I feel having better control on the motors. Definitely use the sensors, better startup and better braking. I actually haven’t used the temp sensors. Look up Derek’s thread cause I believe he posted his temperature parameters somewhere.
I ride with no reverse as I’m experienced and light enough to know how to fully stop in most situations. I also foot-brake below 3 mph, I’m not on the board 100% of the time. But if you need to do frequent and hard braking, like if you live on a hill or a very crowded urban area, then I will recommend going with reverse.
4WD with R is the ultimate ride. You get both speed “and” torque. Take off and braking is instantaneous as well as traction cause you use the grip of the 4 wheels. Turning is also more amazing as you can slow down in the middle of the turn if you think you’re gonna go wide, and then crank it up again to re-align your exit. With 2WD, you almost need to fully stop if you entered the turn going too fast. 4WD with XL is kinda pointless because it will just double up the torque and make the board super heavy.
If you really, really, really need just torque…you shouldn’t do a direct-drive, a geared down system will provide all the torque that you need at half the weight. @psychotiller has a sweet 4WD belt-drive setup with SixShooters and mini 50mm motors. It takes off like a rocket and will not dislodge your arm from your shoulders when you carry it.