Anyone using a QS 205 with a VESC based controller?

[jonpad01]

Just curious if any one is using the QS 205 hub motor on a VESC controller, and what your experience was setting it up.

I am using mine on a 3shul C350 V4.

My experince so far is getting the motor perfectly tuned has been hard, I'll have it tuned and working great, and a few days later I'll give it the full 400 amps and it wants to start cogging. I tried tuning the motor while it was cold, and warm, it's really good but eventually Ill get cogging at high load. Anything above about 2000 RPM and it seems to lose track of the hall sensors, I have to be in sensorless mode.

My other problem is if I am at a dead stop and the motor is in a certain position, the throttle wont work until i turn the motor slightly, and then it JUMPS hard giving it the full power. Ive learn to always roll the bike forward as I give it throttle at a stop, or if I'm on a hill, hold the brake and test it until I can feel the motor giving torque. It doesnt like it if I'm rolling backwards either. Ive had this same problem on 2 different 3shul controllers.

I suspect its a problem properly detecting the hall signals.

 

[Evwan]

Just curious if any one is using the QS 205 hub motor on a VESC controller, and what your experience was setting it up.

I am using mine on a 3shul C350 V4.

My experince so far is getting the motor perfectly tuned has been hard, I'll have it tuned and working great, and a few days later I'll give it the full 400 amps and it wants to start cogging. I tried tuning the motor while it was cold, and warm, it's really good but eventually Ill get cogging at high load. Anything above about 2000 RPM and it seems to lose track of the hall sensors, I have to be in sensorless mode.

My other problem is if I am at a dead stop and the motor is in a certain position, the throttle wont work until i turn the motor slightly, and then it JUMPS hard giving it the full power. Ive learn to always roll the bike forward as I give it throttle at a stop, or if I'm on a hill, hold the brake and test it until I can feel the motor giving torque. It doesnt like it if I'm rolling backwards either. Ive had this same problem on 2 different 3shul controllers.

I suspect its a problem properly detecting the hall signals.

I'm running a makerx g300 on a 5t qs205. I experienced that, but it went away after doing some parameter tuning. The bigger issue in having is some duty cycle instability/really bad cogging near top speed.

Here are some resources for the low rpm stuff

VESC Tuning Advice, Poor Acceleration compared to other controllers

Anyone with any experience using VESC controllers with DD hub motors please advise! I am building a custom ebike with a 1500w direct drive hub motor. Before the flipsky 75100 that I am currently using, I had a Kelly KLS-S 48v controller on it. Specs on that were are sinewave FOC, 50amp cont...

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