The main reason I think it's the motor where the problem is that it can easily take 200+ amps to run on the freeway, even in the correct gear, and it will get very hot (180+ degrees at the case) after doing that.
Basically, I want to do two things: 1) Install a fan to help make sure the motor stays cool, and 2) Try to determine how much loss I'm having with this motor to try to determine how much more efficient my car would be with a 8" ADC, instead of this one. By the way, I have my charging info on my web site: www.dodrill.net\pulsar\Charge_Log.xls for the Excel spreadsheet, or www.dodrill.net/pulsar/Charge_log.txt for the text version. Maybe looking at that would give some wisdom... Thanks for the help. Mark -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Chuck Hursch Sent: Friday, September 27, 2002 11:34 PM To: [EMAIL PROTECTED] Subject: Re: How much power am I losing? Mark Dodrill wrote: [snip] > > Since it is a 6.7" ADC (a bit small for my car), I suspect that I'm having > a lot of electricity turned into heating up the motor instead of having > the motor run faster (since I'm at the upper end of the power/torque it > will do). I'm wondering how I can measure this loss. If I were to measure A small motor may not be so inefficient as you think. I'm recalling that Mike Slominski's EV Rabbit (which was known to go close to 125 miles on a charge with a 96V pack of Trojan T125s) had a small ~7-in GE motor. Yeah, I know, there were a lot of things that went into making that car more efficient, such as less weight (2700lbs instead of the average 2800-3000lbs Rabbit conversion weight), battery pack all in one big block (so less temperature variation and better pack balance), driving technique, etc. But do recall walking away with the impression that higher voltage on a smaller motor may be better, within thermal capacity limits of the motor. Something about the windings being more fully saturated? Anybody know more about this? Chuck Hursch Larkspur, CA www.geocities.com/nbeaa
