Would the cuttimg lenght not be much longer due to the fact that the bean and its resulting fragments do not only travel outwards? Think it is indeed hard to compare.

Motor size is related to cutting surface. The burrs cut the beans whole, as well as the resultant fragments. So my assumption is that the important aspect (torque) is cutting surface area. If a robur uses a 4x motor, the cutting surface is probably 4x as well.

Also, for induction motor, one of course has to be very mindful of slip max Sm (slip is the difference between the rotation speed of the electric field and the rotor. Above Slip Max, the motor will act erratically and eventually stall (it is an unstable area in the motor curve).

Kettlebarista wrote:Other than the chute, the rocket actually seems to be closer to a eureka zenith club e as far as internals and the electronics. The only thing I am unsure of is the motor size of the rocket. Some sites claim 250w while others state it is 500w

The internals of the Zenith are identical to the MDX....