Recent content by apullin

I have a V1 Boosted Board with a broken battery. Some of the cells have discharged down to 0V and I wanted to ping the experts here on approaching cell revival before I start trying to rebuild the pack. ( unfortunately, due to utterly and stunningly incompetent design by Boosted, leaving the...

Eh, I think think they are pretty much the same, with a slightly different geometry. That is, the principle is the same: generating torque by variable reluctance, rather than I x B * L .

Aren't motors like this just usually lumped together as "stepper" motors? That how I learned it. Then some steppers have a permanent magnet in them, and are called "hybrid steppers". Actually, come to think of it, you could just use a BLDC motor as a "stepper", too ...

Did that guy rewind a motor for lower Kv? That's pretty neat. I was just thinking about this recently, as I was looking at my S4025-16. Are these motors already a distributed LRK winding, or could they be rewound in dLRK or LRK for a lower Kv?

Aha, I got hold of a proper micro-ohm meter, and sure enough, it reads as 34 milliOhms between two leads, which tells me that that is indeed the resistance of the two windings in series in parallel with the other winding. Neat. Now to find some donor gears and 1-way bearing from a motorcycle to...

Hey folks. I was just hoping that you could help me sort out a couple of quick calculations. Seeing as I can't seem to figure this out easily, I've decided that I will be sitting in on the motor design class next semester to freshen up my knowledge :D Nonetheless, I have a Scorpion 4025-16...

Well, the idea was to simplify the power supply down to just a single rectifier, so no huge transformer is needed. Would it have to be high-revving necessarily? The stall torque "should" be the same if my (# of turns)*(current) is the same between the low voltage configuration and HV config ...

Hi folks. I was curious if anyone had tried an idea that I'm cooking up here: 55mm and 65mm stators are available on GoBrushless and in Scorpion motors kits, etc. Has anyone ever wound one up for high voltage, low amperage application? By "high voltage", I mean ~180v , specifically, for...