Hi Tim,
I had the same problem a couple of years back with my Sevcon/Motenergy combo (purchased from Thunderstruck).? It all worked great when I benched it and then it stopped working later on (the motor would vibrate a bit but not spin).? The problem ended up being the controller board in the engine (the Motenergy one costs about $30 US).? When Thunderstruck shipped me a new board it worked fine and I haven't had a problem since.
The controller board is in the back of the Motenergy motor, under a small screwed in panel.? I may have a picture from some previous emails that I can dig up.
