Yeah, I have a bunch of 6ga welding wire that I also used on the project. I was kind of stuck with what came out of the battery pack, so I had it switch to 6ga after it came out, going to the motor and the controller. I'm not sure if I am using the right terminology, I am teaching myself how to do this stuff as I go. But the power wires coming out of the pack (which I was refering to as Lead wires) from which I draw power to go to the motor and controller, is 10ga. The charging wires, which I plug the charger into, are even a smaller ga, it's kind of hard to read it, but I'm guessing it is at least 12ga. I didn't have the charging wires plugged in to anything while I was riding the bike, but it appears that those are the ones that got the most damage as far as melting inssulation. It was probably just that they got heated up by the power wires that they were next to. All 4 wires are coming out of the same hole in the pack.
I purchased the pack from someone online from a forum. I know, buyer beware, but he said that he didn't use the pack, he was just going with a different battery setup. Someone name Gary (I think his last name is Goodrum) from OC Cali built the pack. I had his info on my laptop, but I just had my house broken into and they stole my computers and stuff. On 9/16/08, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > 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" <[email protected]> > > 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 > [email protected] > http://www.floridaeaa.org > > > > _______________________________________________ > Florida EAA mailing list > [email protected] > http://www.floridaeaa.org > _______________________________________________ Florida EAA mailing list [email protected] http://www.floridaeaa.org
