Recent content by bustedknuckles

this is the best pic i can get right now, until i can get the hub off the bike. you can see the broken metal just inboard of the cassette. the freewheel threads broke cleanly off of the side plate.

I was getting going from a dead stop and I was in my highest gear. I usually gear down before I stop but a family walked out in front of me and I had to stop pretty quick. I was standing on the pedals and the threads broke clean off the cover. The bike is at my shop, I'll have to take a pic...

Does anyone know where to get a stronger drive side cover for a Mac motor? I thought I remember seeing a stainless one a couple years ago, but since I finished my build, I have'nt been sourcing parts. Just broke mine after a solid two years of riding on it and would like to upgrade. Thanks in...

Yeah, you might be righ zip. I probably should make nice with dnmun, he has great knowledge and I'm sure he means well. I think it was simply a matter of miscommunication. I did post some issues and disappear from the thread for a while but, with work, school,and family I had little time spend...

Thanks wb9k, I think all the problems I've been experiencing are related to the connectors between the split packs. I may just permanently connect the packs to avoid these problems in the future. Once I make sure the BMS is working properly.

Thanks all for getting back to me on this. Recieved the new half pack from Paul. Now I'm trying to make sure the BMS is working, and I have to make sure the old good half and the new half I just recieved are as close as possible in voltage before I hook them up and use them. Wb9k, can I...

Thank you all for the input, sorry I haven't had time to post back here for a while but I am a working student with a family and with this battery down I've been biking (on my single speed!) and taking the bus, I've had little time to work on this problem. Let me address one thing before I...

Thanks ypedal, I was waiting for some input before I did anything with it. I certainly won't charge or discharge it.

Thanks for your input dnmun. I'm not "refusing" to do anything. If Paul accidentaly sent me some bad cells it's a warrantee issue in my opinion and I'd rather be able to send these packs back to him in as few pieces as possible. I'm not really asking for incendiary comments, I'm more interested...

I finally got around to working on this pack but after pulling them out of my panniers ( where they're Velcro strapped to the frame panel) and there's two puffy cells in one pack. These have puffed up to around 4x thickness or more. Could these be the reason for my low v cutout or is this just...

Yeah, I think the BMS is under a piece of fiber board, wrapped in heat shrink, at the top of the pack. It wouldn't be to hard to get to. I hooked everything back up yesterday using some 75A Anderson's I had around, the voltage was good but I'm still getting a low v shut down after a couple...

Paul got back to me this morning. He says there's probably nothing wrong with the pack, to wire it back up with some bullet connectors and it should work fine. He says the low (no) voltage I'm getting is just the BMS doing its job and im not checking voltage at the correct point. I'll let you...

So Paul just got back to me, here's his email. "There is a BMS fitted in 1 of the packs I am sure and if that is not fully terminated it will protect the battery and you will not see the correct voltage when you measure. It can't be fully terminated unless it is linked together with the other...

Thanks for all the input guys. I'll be getting in to it tomorrow evening. I got a new multimeter arriving tomorrow, I dont trust my old one for this kind of work. I'll post some pics and the individual voltages. Paul is still MIA.

Well, I emailed Paul two days ago and he hasn't gotten back to me yet. It looks like im going to have to open this pack up. Kind'a disappointed, I bought one of cellman's batterys because I didn't really want to have to mess around. If I wanted to screw with a battery pack I would have built my...