Steve, Your requirements are basically the same as mine. Take a look at http://www.evalbum.com/preview.php?vid=1231 for the details on my bike as a reference point. I don't think you will get the range you need on 200 lbs of lead batteries without discharging your batteries way beyond 50% and shortening their life. If I were doing my bike now I would put in a 96V 3kWh pack of A123 or K2 cells with the same Ah rating. This would be about 100 lbs vs the 300lbs I have now. I need a higher voltage to get my top end up to about 60MPH and I never draw more than 600A from the PC1500s I have in the pack now that can supply up to 1500A. me
On 1/18/08, SteveS <[EMAIL PROTECTED]> wrote: > Good questions Shawn, thanks. > > I'm looking for ok performance. I'm shooting to be able to make it to > work and back - 15 miles. I don't need to go over 45 MPH. I have a few > hills. I don't need startling acceleration. > > The chassis without motor and tranny weighs 219 lbs. The GE Motor is 65 > lbs, and I figure 200 lbs for batteries, so it will back up around > original weight (473 lbs with ICE). I hope to eventually change over to > Lithiums, but I want to start cheap to get some real data so I know what > I really need. > > The controller is one piece I hope to retain on any future upgrades, so > maybe I should go with a 4844 or should I be looking at a 4855 or 4865? > Price is an object. > > Good to hear good things about Alltrax. Curtis was no help in diagnosing > my 1204x problems. > > - SteveS > > Shawn Waggoner (FLEAA) wrote: > > Hi Steve, What do you think the finished weight on the bike is going to be > > and what type of acceleration are you looking for? > > > > If the bike is going to be over 500lbs plus rider, the 300A controller might > > be a little small, but I definitely like the Alltrax line of controllers. I > > have used several of them and they have all held up great. > > > > Shawn > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of SteveS > > Sent: Friday, January 18, 2008 8:29 AM > > To: ElectricMotorcycles > > Subject: [ElectricMotorcycles] Controllers > > > > Ok, I've officially started my BMW conversion. I'm going to start off > > with an Elec-Trak snowblower motor and some AGMs to get a feel for what > > I really need. I was hoping to use a Curtis 1204X controller I had > > bought, but it doesn't seem to work. So, any suggestions on controllers? > > I'll be running 36 or 48V. I guess the big question is what size > > (amp-wise) a controller I need since that correlates with price. I'm > > thinking about the Alltrax 4834 : 135A - 1hr, 300A - 2 min. > > > > - SteveS > > > > > > > > > > > > > > >
