Recent content by recat

If my e-bike's battery runs out, I think i have a MUCH bigger problem than worrying about lighting. :shock: However, the controllers I have output some voltage when you pedal the bike past 10 km/h. This voltage in turn powers my current headlight. We all have giant highly efficient generators...

Don't forget your links :D Ive been looking for a decent dc dc power supply.

Well, I've tested it well. Changing from Wye to Delta is utterly and completely pointless if I'm keeping 26" Wheels. It's absolutely abhorrently bad. Motor wires nearly melting from 25A battery current, absolutely abysmal acceleration. It's far worse than the 1.7:1 ratio due to the extra losses...

Based on a variety of tests i've done testing the speed in the air and comparing measurements, I suspect it must be a 6 turn motor. Closest match is definitely a 9c 2706. Modified the cheap Voilamart controller I have with 100V caps and IRFB4110's: Just changing the two out worked for...

Thanks! Is there a technique for counting the number of turns on a motor? I know it's 9 strands but the number of turns is still not very certain.

From what I understand, it can be compensated for just by increasing the amps. Based on what I read here: https://www.electricbike.com/motor-tech-part-2/ Yeah, I'm also wondering about this, which is why i'm so eager to test it. I plan to upgrade to a 19S system soon for more speed anyways...

I've been looking at that motor simulator, but i'm not too sure which would be the closest match to mine even after reading it. I'm guessing one of the 9C ones, but i'm not sure what the 4 numbers after it represent. 2705 2706 and 2707. What's the differences between these three? Sorry, I...

A while ago i encountered the only other guy in my city with an ebike with 9C clone motor, and he said his was 1.5 kW and it reaches 70 kmh.. but then he said his controller was 25 amps and 48 volts. Exactly the same as mine at the time, except mine was sold to me as supposed "1kw" and it only...