Recent content by stinkycats

http://www.lingbeimotor.com/ Select "English" from the round, grey button at the top with "CN" on it. Also, the current list of sellers: https://endless-sphere.com/forums/viewtopic.php?f=28&t=94220&start=200#p1415336

According to Ling Bei, there is only one version -- it has 9 MOSFETs. The latest revision of the motor includes a connection for a programming cable (sold separately) and the ability to handle 52V with a maximum of 750W. I don't know if they've changed the grease, but they are very responsive to...

Can you find out for certain how many poles are on one ring? Count how many pulses you get from one hall sensor in one full rotation. This will be important for figuring out if we can do fine or course torque measurement. Assuming a cadence of 100rpm, that will be a maximum of 40ms (0.024*100 /...

We can very clearly see between the second-to-last and last image that there's a variation between pulse train differentials. The free-cranked picture shows approximately 106ms between pulses while the hand-torque-applied picture shows roughly 42ms. Interestingly enough, assuming the bottom...

This is fantastic wheelyphased. Great job! The 60Hz interference is unfortunate. You can buy a pair of cheap probes if you need to do something like this in the future. We can ignore the in-phase X-Y 60Hz signals though, as shown here: Just as the motor kicks in, we can see two 180° out of...

You need to tap the signal from these wires: which are connected to the controller here: We can probably assume the red and black wires are V+ and GND, but you should test it first with your meter (check continuity between the pcboard V+ and GND planes and the wires). The green and blue...

Yes, the phase difference of two pulse trains can indicate the amount of torque. However, as I pointed out, a pulse train is nearly useless as a measure of torque if you don't have enough pulses-per-revolution. One pulse every 360° is useless. One pulse every 180° (2 pulses per revolution) is...

That doesn't mean much. The pictures fantasy2 shows here don't indicate if the hall sensors are switches responding to the presence of a magnetic field, creating an on/off signal (which would require multiple poles around the circumference to have a greater resolution than one pulse per...

Thanks wheelyphased for the report. Has anyone put the torque sensor output on a scope yet to determine if you're actually getting a variable signal? It seems from the ride characteristics described that the torque output is only an on/off signal. If that's true, then no amount of firmware...

I've been eyeing this motor. Several dealers are selling it. Our very own eyebyesickle: http://recycles-ebike.com/home/304-free-shipping-ebbs02-diy-conversion-ebike-kit-midmotortorque-sensor-36v-500w-high-speed-electric-bike-motor.html...