More later once I have time to troubleshoot it, but I suddenly had a problem tonight, just as I was about to leave work after closing time, with 80lbs of dog food on the bike.
Under a startup load (typically 60A+ for an instant), the battery would cut out as if it hit LVC, and require actually disconnecting the main power plug at the BMS from the battery itself, in order to reset it. It'd run fine just spinning the wheel, even with the bike weight on it, skidding on the ground, but if I tried to ride the bike, or have the load on the wheel enough to keep it from skidding/spinning, it'd cut out completely.
When I have hit LVC on it during the capacity testing I did, it only had to have the pack/BMS disconnected from the bike to reset it, IIRC (but i'd have to go back and check previous posts about that to be sure).
Unplugging the cell balance taps didnt' work, either, as I couldn't even get it to reset with them disconnected, while I was trying to do this to get home. It did work later, once I got home.
Thankfully the manager I was closing with had had motorcycle trouble (wouldn't start, so he couldn't ride it to work) and was being picked up by his family in a small wagon/suv type vehicle, so they took the dogfood, one of hte sidepods, and the battery to my house for me, and I pedalled CrazyBike2 home the ~2.2 miles, at about 8-10MPH most of the way, with frequent rest stops.
I didn't really feel any extra drag from the motor, and I even tried it with it unplugged from the phase wires on the controler just to see if it made a difference. Nope, just a really heavy bike that's not geared right for pedalling by itself.
I haven't pedalled in MONTHS due to my ankle and then my leg/ankle injuries, so this was exhausting on top of already being wiped out from work (shuffling a couple of tons of dog food bags around on stocking carts and stocking it on shelves, checking expiration dates, etc., for several hours).
Plus the chain is too long for really low gears, as I was using it only to add to the motor assist at higher speeds, last time I had planned on using it (at the race), so it would tangle in the derailer and jam the derailer against the rear cassette every 1/8 mile or so.
I didn't have my chain tool with me, as I no longer carry my good tools or any of them that I only have one of, after having lost all my other tools earlier this year by carrying my best and unique tools with me all the time.
So I couldn't shorten the chain to fix the problem.
I also couldn't shift while riding, as the derailer would jam then, too, for reason i couldnt' determine. Too loose a chain, I suppose. So I had to just set it in a gear I could startup from, and that was just about the lowest I could get it to, without such a loose chain that it would fold up the derailer again. Middle gear on front, next to highest on rear (for some reason, going lower in gear in back made the problem much worse).
Once home and after feeding the dogs, I started trying to measure at the balance taps for voltages, but my hands are so unsteady from being exhausted that I can't get good readings. Just typing all this is quite the effort, but I can't sleep due to worrying about the fate of ES viewtopic.php?f=1&t=30607
after the buyout debacle began.
Since I would like to use the battery to ride with to work tomorrow, I put it on the charger and will leave it to run and hopefully balance some overnight, even though this will take away some evidence of what might be wrong. I'm sure I can fix that just by running a high load on the pack. But I doubt it will just work again like this, so another plan had to be hatched for my commute, more later in the post.
I suspect it's one of those strings that was running low during the discharge/capacity tests, or another runt cell coming to light after pushing the pack like I have been.
I PMd and emailed Cell_man (a couple of days or more ago) to see what cost of new cells similar to what's in here might be, in case I need several (or more) to fix it (though mostly to repair another member's pack if it turns out to be cells on his similarly-built pack, once it arrives here and I can get to testing it). No response from CM yet, but I know he has some pretty busy times, sometimes.
For now, CB2 is still partly disassembled, electrically, with the battery box off the bike and just charging up.
I dug out the old pair of 24V NiMH packs, and am recharging them now (actually I think they finished halfway thru me typing this, cuz it's taking so long), but I cant' find the stuff I'd need to mount them on CrazyBIke2, or my power cable extension to allow mounting them in a rear pod. Hachi agrees they needed charging, at least.
Plus, while stopped to fix the chain one of the many times it jammed, I knocked CB2 over and that broke the mirror off again.
This time it's missing a piece, too, that I couldn't find on the sidewalk or pavement.
I'll *have* to cut a new piece of mirror for it now, out of some other mirror.
So I dug out DayGlo Avenger, and spent an hour or so checking it and fixing things I forgot to fix before I put it away. Plus, the rear tire had mysteriously gone flat for no reason I could see, so I aired it up again and about a second after I was done it began hissing, as it has a defect on the valve stem/rubber interface.
That sucks, as I thought I was done with all that crap, since I have been using the thick Slime brand tubes they sent me as replacments a while back. Oh, well, I guess age probably got to them, as I think they might be 3 years old or more...whenever it was that my liner was punctured by the roofing nail and they warranty-replaced them. Or maybe this is the newer Slime tube I got as a spare, much later on? I can't remember.
Anyway, I don't have another good 26" tube that I can find, and I can't patch the valve stem.
Well, I think there's a good one on The Velcro Eclipse, but that bike is buried in the bakc of the "bike room" right now, and it'd take me hours to get it out. So I dug out the 26" "airless" rear wheel I got off a Freecycled bike a year or two ago, and put that on there, since it was in an easy-to-access closet of tires and wheels.
I can stick the NiMH in DGA's pod easy, as it already has a cable running in there for it, no extension needed. So once I get done posting this, I'll go test the NiMH on DGA and make sure it works so I can use it to get to work in the morning.
Even if it doesnt' work or work well, I can at least still pedal DGA liek a regular bike without all the problems I have on CB2 with that right now, and it still has a cargo pod on it to hold the stuff I need for work (since I cant' take my backpack in anymore, and I have to leave the bike locked up outside instead of bringing it inside, these days).
More data/etc on the Vpower/CammyCC battery later.