[Spook50]

Originally Posted by wengejor

My understanding was that even at low current levels the chinese armature can overheat and then the insulation on the windings will melt then cause a short which results in a fire. The over heating comes from lack of proper airflow through the motor. In that case the Bosch specified fuse wouldn't break even though the motor stops running and is on fire!

I wasn't the person at Bosch doing the study but I got to periodically see melted components on the cart in the hallway.

You could put a thermocouple on there for the first few times you run it just to see what the operating temps on the motor are over time. Then just make sure you don't run it too long such that the temps get out of control.

This is getting really interesting. A good word of warning to stay away from Chinese made crap, it sounds like. What would be a good operating temp range for the motors when running? I'll be picking up a non-contact thermometer before this project is done so I can dial in the ideal engine temp with the controller, and it sounds like it'll be a good idea for monitoring the motor temps too.

I just looked at the motors on my unit, and there's no manufacturer name on 'em. Just a part number and "MADE IN TAIWAN". IIRC, Bosch stuff is made in Portugal isn't it? I seem to remember seeing that on the Bosch relays I've used recently. I wonder who's stuff as far as motors is made in Taiwan...