justin_le wrote:So we would expect the Crystalyte 'G' motors to be about 38% less powerful than the 9C variant of the same diameter.
And the Dyno Tests basically confirmed that. Crysatlyte has two winding options listed on their site, a 40kph and 30kph model, and we were sent the 30kph variant which was marked 4x16, so a 4 parallel 16 turn wind.
At 36V, it barely reached 300 watts of peak output power. The measured values are shown with markers, while the line shows the theoretical curves from the model that would be drawn by the simulator:
At 48V, the output power maxed out at more like 500 watts, though at pretty low (55-60%) efficiency.
The other thing we looked at is the cogging torque, which is often a concern for people with direct drive hubs and which you'd expect to be really low for a small motor like this. However, it actually wasn't anything special, the static cogging torque was over 0.5 Nm and about 0.6 to 0.7 N-m at normal cruising speeds. This is a little bit less but pretty similar on the whole to the larger 400 series crystalyte motors.
In any case, for those who wanted to play with it I put the motor up on our simulator, http://www.ebikes.ca/simulator
, listed as the "Clyte G2530". You'll notice that the G2440 option is modeled too. This was done just extrapolating the info from Crystalyte's website in conjunction with our test results on the G2430 hub but without an actual dyno test, and so might not be totally accurate.
I'd be curious to hear of other people's firsthand experience with this motor. Anyone really loving it?