Hi Jeremiah, First, congratulations on getting the bike together! Sounds like it'll be fun when you get it back in better shape.
Along those lines, I would say that you certainly were not being paranoid about using 10GA wire. Seriously, 10GA for 100A continuous?? I would have used a minimum of 4GA, and if I'm not mistaken, Shawn and I used 2GA on our 48V and 24V bikes. Granted, those hit upper limits of 850 amps or so, but would cruise near the 100A range. Re-reading your post, though, it looks like you're talking about the charging cables for the pack, not the traction cables. Is that correct? You mention "lead wires" later on, so I guess you really are talking about the high current conductors that run back to the controller. May I ask who built the pack and from where you purchased it? Matt Graham Treasurer, Florida EAA http://www.jouleinjected.com -------- Original Message -------- Subject: [FLEAA] Need help with a BMS From: "Jeremiah Johnson" <[EMAIL PROTECTED]> Date: Tue, September 16, 2008 6:24 am To: "FLEAA Mailing List" <listserv@floridaeaa.org> Hi everyone. I finally got my first EV motorcycle running and took it for a small test ride down the block. I went about half a block to the stop sign, turned around and started back to my house. I was at about 1/2 throttle, just looking down at everything mechanically moving to make sure everything was good. Then i hear a slight pop, loose power, and some white smoke comes out of my Lifebatt battery pack. I pushed the bike back to the house and pulled out the battery pack. I measured the voltage and still had 52.4 v (had 52.5v when I started). I opened up my pack and saw that the two charging wires going into the pack had some melting of the insulation and there were a couple of components on the circuit board that looked burnt. I think the components MIGHT be able to just be replaced, but I don't trust my soldering skills to do that. Anyone got skills in this area, or know where I can get another BMS from? I think the root of the problem was that the lead wires coming out of the pack were too small of a ga. I had a whole thread on that on another forum and I was bassically told that I was being paranoid and that the 10ga wire would work for my application and to go ahead and run it. The person who built the pack and put 10 ga wires coming out of it, said it was good for 100a continuously. _______________________________________________ Florida EAA mailing list listserv@floridaeaa.org http://www.floridaeaa.org _______________________________________________ Florida EAA mailing list listserv@floridaeaa.org http://www.floridaeaa.org
