Recent content by electricmaile

The Freway company is log gone and parts (like the battery) are no longer available. I posted about this a few years ago but nobody had and good data on the batter and electrical system at that time. Just wondering if anyone has more recently hacked the system to keep the bike running. You...

I'm not sure I understand. Did you mean remove the bad cell (Possible, though difficult given the pack construction), then use it as a 9s1p to give a nominal 32.4v battery? The bike would run with that I'm sure, though at a slightly slower speed, but I'm wondering how the battery controller in...

The cell which was at 0.4v charged up to about 3.3 after maybe 12 hours at 0.5A, but when left sitting overnight was back down to 0.4v the next morning. I don't know a lot about li-ion cell characteristics, but I presume this means the cell has gone bad. The other 9 cells are at 4.1v. So I...

Thanks I tried that and indeed one of the cells is low voltage. 9 of them show about 4 v, but one is only 0.4v. I'm not sure if that means it's just low for some reason or if it's a sign that it's damaged. I will try to charge it using a constant current voltage limited source and see if the...

My 36v battery back (no brand name) failed during charging. When I plugged it in it was fine, when I came back to check on it an hour later the charger indicated it was finished charging (It should have taken longer), but the battery wasn't charged. Checking the terminal voltage it read 22v. I...

Just to add a little more info, I looked at the 5 pin connector of the battery with an oscilloscope (with the battery turned on) and all 5 pins are active. In addition to the +41v and ground pins (which are on first and last pin) the other three pins are periodically connected to ground to show...

I'm still looking for details of the battery connection of the Freway VR-01. The controller is built into the battery holder and there are more than two connections between them. There are at least three. There's clearly a battery {+} and a battery {-} which connect to the 36v Li battery, but if...

I'm looking at the Freway VR-01 as an inexpensive ebike for a friend. Some time ago I put my own ebike together using various Chinese parts, so I'm somewhat familiar with the hardware involved and how the battery/controller/motor work together. What I can't find any any real technical details on...

Thanks for the suggestions. Looks like either a mechanical or an electronic limiter on the thumb throttle is the easiest way to do this. I think the throttle signal may be a simple 0-4v level, so that could easily be reduced to 0-2v. I'll have to play around with that. The Cycle Analyst looks...

I'd like to know if there is a way to change the current limiting of a motor controller. I'm guessing that it's probably done in firmware, so there would be no easy way to change it (like changing the value of a resistor), but maybe I'm wrong. I'd like to LOWER the maximum current that the...

After playing with the position of washers and shims, I'm measuring an offset of 5mm and the brakes seem line, so I'll just ride it like this and see what happens. I'm not expecting too much from it, given the ridiculously low price paid. The motor may well explode or otherwise meet an early...

Thanks guys, I really appreciate the feedback. I wasn't aware of the term "dishing", which is probably why my search attempts failed. It's good to know that this is a common problem and isn't a serious issue. I'd never ride a motorcycle with the wheels out of line, but the speeds and stresses...

I'm doing my first e-bike conversion using one of the ubiquitous Chinese rear wheel kits. Supplied was a 26" wheel with a 36v 250W geared motor. My question is whether the wheel (tire) should be centered between the rear forks when mounted and if it's not centered, is this an issue? About the...