Recent content by Ken McNeill

I still have yet to resolve my chattering issue. I’m appealing to those of you who have been extremely helpful thus far (thank you again). I ordered a new motor and new motor controller from MacMotor. I connected the throttle directly to the MC rather than using the Pass-Thru on my CAV3...

I opened my original drawing file. I must have noticed my error the next morning and made the correction. I’m gonna celebrate with a margarita. 😎🌴 Here’s the corrected one.

Okay.. in my defense, by the time I got to the 4th diagram it was ‘margarita time’. I thought the colors balanced well there. 🤣🌴

Exactly. That’s what I was thinking. 🤣

I drew this a couple years ago for reference. I had been working with EM3ev at the time and can’t specifically remember why I drew it that way. When I looked t it yesterday, it just didn’t look right?

Brand new motor controller, new throttle & cable, brand new motor. Connected new throttle direct to motor controller. New motor controller to new motor.

All of your posts have been tremendously educational. I thought I knew e-bike operation well, but this has been enlightening. Thank you for that! 😎🌴 I never thought of the CA as just modulating throttle signal. Are wattage and current just calculated? How are they limited? There is a screen...

Well, I balanced the cell group and reinstalled the same battery. Connected BMS app and all groups balanced. Worked for a minute or two while I was attempting to put a load on the bike.. then the BMS lights on the outside of the pack went out. Now I got nothing. 🫤

Thanks to all of you for your time and thoughts. It is truly appreciated. 🤙 BTW, I have a 3 position switch that is programmed for 20A, 30A, and 40A. Problem occurs regardless of switch position.

This makes a lot of sense And you’ve got me re-thinking this. The battery would shut everything down, not just drop current flow. The power to the CA is supplied by the controller (6 pin connector). I thought maybe it was a data connection, but on second thought I don’t suppose it has to be. The...

I am seeing the current stutter on both. After 6-7 stutters, power shuts down and I hear a hum for a second or two. Once I’m riding on level ground, and apply throttle it works until amps hit 2-3A. Turn uphill under load, and there is not near enough power and shut stutter and shutdown with hum...

Wouldn’t the CAV3 be reflecting what voltage is at the controller (through its data connection)? I confirmed BMS voltage to CAV3 voltage. Identical. I’m thinking the smart BMS is stuttering power output as one cell group drops below a safety threshold. An LVC cutoff. I’m going to balance that...

Very likely. I plan to individually re-charge the cell group to balance the battery. We’ll see how it goes.

Just an update on my efforts to identify the issue. I finally received and installed a new motor controller which now tests good with the tester. I still had bad chattering under load, so I installed a new motor. As a tour operator, I try to keep replacement parts on the shelf. Same issue...

Does anyone have any specific or typical motor controller schematic diagrams?