Bare Naked Motor!
Sexy Beast bares all!
Watch as she shows you whats inside!
Big Black Hubby shows all! ....
ok, WTF was I thinking with that one....
I took my bike on vacation, but had some hall trouble while I was down there. The motor would start bucking like a dead hall or blown FET right at 10mph, but was fine going slower. I did the usual checks and tests, but didn't have the time or tools to look into it too far.
When I got home, I decided to open the thing up and see what was going on. At first glance the motor was clean and perfect. all cables looked fine except for a tiny scuff in the insulation near the wire exit. I couldn't find an issue. Everything tested clean. the motor and controller worked As an afterthought I had added a $5 USB microscope to some dib bid ebay order and hadn't used it in a while.I decided to give the scuff a closer exam. Turned out to be a partial break in the hall wire. it would still conduct, but not well enough at higher speeds.
But that wasn't all. while the inside of the motor was as clean and pure as a virgin's twa... something, both bearings were dead. one was rough, the other was totally frozen. It was an easy fix, but these were suppose to be Japanese bearings.
Everything together now and the problem is solved. I even remembered to put my temp probe in, this time. been meaning to do that for a year.
With that solved I began to work on the programming. I'd pulled the power back while getting the tires sorted out. The Old Innova/Surly just couldn't take the power. This latest Vee Rubber Sterling has been holding up great. It also gets awesome grip. All around an awesome tire, except it sounds like a swarm of angry hornets going down the road.
The dual Surly Larrys had large blocks set wide apart, and the bike sounded like a bomber going down the road. pretty much exactly like this:
SOUND. Bombers sound way cooler than angry hornets.
Unfortunately, My old PC died, along with all my programing notes and templates. I have no idea what I was running at.
I made a wild guess, set it at 60 battery amps and 100 phase, and figured that would be backing off and I would work it back up slowly. I guessed wrong.

I'd forgot how much fun it is to have the wheel come up on it's own.

Apparently I'd backed the power off a lot more than I remembered last summer.
No good ride videos lately. Most of my rides have been at tourist speeds, which is fun to ride but boring to watch, or fast, but in suburban traffic. the a$$ end of a minivan in traffic is also boring to watch. Anything else I've done on the bike, I wouldn't want proof of on video.
So anyway, Pics.
And Uhh, yeah. measurements, for those of you who are in to that sort of thing.
42mm stator
43mm magnets
The Damaged Hall under cheap @ss USB microscope.
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