I’m trying to decide what model of the odrive to choose. I’m going to try to build a direct drive force feedback wheel (steering) for use in e-sports sim racing. The latest and greatest in this area are direct drive, i.e a wheel mounted directly on a powerful motor. The most successful implementations are using huge AC servo motors with torques up to 30 Nm peak. However, noone seems to utilize the full potential and turn them down to about 10-40%. These implementations are using torque mode for controlling the wheels, and high resolution encoders to read the angles,
My plan is to try hoverboard hub motors, and try to squeeze as much torque out of them as possible. Oskar’s reports of up to 12 Nm look promising indeed.
The forces I will apply (per the FFB protocol) will need to be applied fast. Think going over curbs in 250 Kph. That will cause high frequency rumble. The more springy forces are slower and more static (wheel centering spring forces).
The question I am debating is what voltage I should runt the motor at. According to specs these motors look like they are around 12 Kv. At 24V they should spin at 288 rpm. Now, the wheel should not spin that fast ever, but the rumble forces (sawtooth, square wave etc) will have high frequency that might relate to speed, which may relate to voltage. I am not sure. Is the torque more related to amperage in this situation?
Need some advice here I’m afraid.