Wednesday, March 11, 2015

Putting my titanium Tidalforce S-750C (for Crystalyte) back together again

The weather has finally started to ease up. I am feeling the riding bug again!

Over the winter, I've picked up the tiny Mac 7T (speed wind) and's FOC BAC500 controller. However, the Crystalyte HS3540 motor has been patiently waiting for a new sensorless controller in order to bring it back to life. The BAC500 seems perfect for the job. It is so tiny and clings to the seatpost with only a couple of tie wraps that I had to try it first.


  1. Ambrose, have you tried the's FOC BAC500 controller on your E+ rear hub? That of course would help a few "dead" E+ ebike owners with dead front NiMH batteries or dashes?


  2. I'm working on it as one of my ahem, side projects. The E+ motor controller is incredibly hard to get to since it's buried deep in the motor. The motor is held together with a powerful spring clip that I've spent many hours trying to remove intact. I don't think it's possible so I may have to forcibly remove it. Your idea is a good once since the E+ motor is a fairly ordinary 3 phase motor versus the Tidalforce 7 phase motor.