titusmc
100 W
Hi -
I'm working on an external controller mod for one of my BBSHDs using a V2 Grin Phaserunner. Goal is to run 72V (20S) at 40A with smooth/ramped acceleration from a stop to minimize stresses.
I made my own JST adapter cable for the hall sensors and motor temp sensor and added 10AWG phase wire using silver butt crimps. I paired the motor and controller using a 52V battery since I hadn't yet finished my 72V one, and everything ran okay. I took it for a test ride at 52V50A and everything was great except for some "judder" if I moved the throttle too quickly - surely must be a ramp rate issue that I can fix with CA3.
This weekend I finished my 72V battery (Samsung 30Q 20S5P, 60A BMS, 10AWG to XT90, triple-layer nickel). I hooked it up and got a hall sensor fault (LED code 1-6). The communication over USB seemed unstable as well. I tried the 52V battery again and everything was fine - halls are okay. The only thing I can think of is that the 5V line might be too high with the 72V battery for some reason, causing both the halls and USB to have issues. I'm going to check that tonight with a multimeter.
I know others have successfully used external controllers (including Phaserunner) on BBSHD. Hopefully someone has the answer or a decent troubleshooting idea.
Thanks,
Matt
I'm working on an external controller mod for one of my BBSHDs using a V2 Grin Phaserunner. Goal is to run 72V (20S) at 40A with smooth/ramped acceleration from a stop to minimize stresses.
I made my own JST adapter cable for the hall sensors and motor temp sensor and added 10AWG phase wire using silver butt crimps. I paired the motor and controller using a 52V battery since I hadn't yet finished my 72V one, and everything ran okay. I took it for a test ride at 52V50A and everything was great except for some "judder" if I moved the throttle too quickly - surely must be a ramp rate issue that I can fix with CA3.
This weekend I finished my 72V battery (Samsung 30Q 20S5P, 60A BMS, 10AWG to XT90, triple-layer nickel). I hooked it up and got a hall sensor fault (LED code 1-6). The communication over USB seemed unstable as well. I tried the 52V battery again and everything was fine - halls are okay. The only thing I can think of is that the 5V line might be too high with the 72V battery for some reason, causing both the halls and USB to have issues. I'm going to check that tonight with a multimeter.
I know others have successfully used external controllers (including Phaserunner) on BBSHD. Hopefully someone has the answer or a decent troubleshooting idea.
Thanks,
Matt