Re: Direct drive minibot - output diameter?
 

As in dinitrogen?

The Tetrix motor (without gearhead) spins at roughly 7 350 rev/min, according to the data collected in this thread.

Re: Direct drive minibot - output diameter?
 

Tristan gave an answer in the previous post, but just curious, why do you ask?

The Tetrix motor has a speed v torque curve which is more nonlinear than other motors in the FRC kit. If you linearly interpolate between free speed and stall torque you'll get answer for max power notably larger than the true value. For LogoMotion it makes more sense to use a linear interpolation between stall torque and max power (@rpm) for motor calculations.

Re: Direct drive minibot - output diameter?
 

Any reason you chose the flatted shaft? I would think the round shaft would be better for balance at high speed.

Re: Direct drive minibot - output diameter?
 

After you put surgical tubing over the tetrix shaft it becomes quite round.