I have a VESC issue which I’d be so grateful if someone could be help on and highlight the error of my ways.
I’m using an SK3-6374-168kv motor off 8S (32V) to power a small electric trike. In fact, it’s a ‘Sinclair C5’ if anyone remembers these?
http://bright-cars.com/uploads/sinclair/sinclair-c5/sinclair-c5-17.jpg
The Sinclair C5 has 16” wheels so the motor is geared down 15:1 to provide a top speed of 17 MPH (off 32V); easy for a 2000W electric motor?
Before the VESC I was using a huge Castle Creations Phoenix Edge 200A ESC. This worked ‘ok’ but I got that nasty ‘cogging/stuttering’ sound when starting from a standing-still, or if I opened the throttle too quickly when on the move. When it wasn’t ‘cogging/stuttering’ though, the Sinclair C5 accelerated rapidly. Using this ESC’s data-logging capabilities, at times the motor was shown to peak at 200-300A though!
After doing some Googl’ing I stumbled across the VESC which seemed to answer all my prayers. However, try as I might it’s proving to be much worse than the CC Phoenix Edge 200A ESC
I’ve read all the FAQ’s and watched all the videos. Every configuration step completes perfectly , exactly as documented, but the end results are just very poor.
The motor is EXTREMELY jumpy /stuttery and the VESC easily cuts-out when the current maxes out at my pre-configured 80A. This confuses me, as I thought the VESC would ‘manage’ the current up to the configured maximum, but from the live data you can see it just goes straight to the max configured current (80A) and then after a jumpy/stuttery 3 seconds, cuts out.
What is happening? Everyone is saying the VESC is silky smooth from stand-still, but my experience is the polar opposite? Even when I’m on the move when I try to gently accelerate the motor jumps and shutters. With no load on the motor (i.e. the rear-wheels lifted off the ground), it’s perfect.
I would be delighted to share my config file if it would help.