I am happy that someone noticed. Rich Rudman and I ran around all day putting watts into cars and barely got to run ourselves. I ran twice without getting a charge before the run. When I got to charge it didn't take very long to get the bulk charge done.
Twice I recorded the time and amps during the charge after a run: Up to 5 minutes was 60 amps. 6 minutes was 44 amps 7 was 36 8 was 28 9 was 23 10.5 was 17.2 13 was 12.3 16 was 8.8 21 was 6.5 42 was 3.4 amps The second charge was: up to 6 minutes was 55 amps (the hot sun was causing the charger to cut back) 6.5 minutes was 48.3 amps 9 minutes was 26.8 amps 11 minutes was 15.5 amps (and the emeter was back at zero Ahr) The numbers are a little screwy because the car launches at 1000 amps and it is only a 500 amp emeter. That is why the battery is not fully charged when the emeter rolls over zero. I should have moved the tap on the shunt but I wanted it to read real amps during the recharge. Rich Rudman almost missed a run group because he had not recharged. He ran anyway. My guess it that is was his sixth run of the day that was a half second slower than the rest of them. Only three people ran seven times that day: Rich Brown, Rich Rudman and me. I think the track needs some 50 amp RV power pedestals in the camping area. They could charge extra for those spaces and we could use them for charging when we are at the track. Joe Smalley Rural Kitsap County WA Fiesta 48 volts NEDRA 48 volt street conversion record holder [EMAIL PROTECTED] ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, September 05, 2002 9:42 AM Subject: Wow! Fast chargin' at Woodburn! > > Hi to all, > > I went to Woodburn with my Manzanita Micro PFC-20 charger (ugly box, serial #2), happy > that I'd be able to pump 15 to 25 amps into my Dualin'7. I have two strings of big 42ah > Hawkers, so I don't need that much charge after a run down the drag strip. HAH! That's > what I thought. > > After my first run, the battery warm-up run, I plugged in my PFC-20 to give my batteries > a little drink of juice. Hmmm...15 amps, good; I thought. I talked to a few people and took > a look at a few cars and came back to the car to check the voltage on my pack...164V...this > is going to take a while. I took my next run at pretty much full charge, but that's only > because the junior dragsters took so long to get through their runs. > > On my third run I drove into the water box. With my rear tires sitting in a little water > I armed the controller bypass switch and stomped on the go pedal. The tires did a very > satisfying smoky burn-out that sent the D'7 screaming toward the staging lights! Well, > that and the 1/4 mile was more heat than the Kilovac EV500 could take and at the end of > the strip I had to pull the circuit breakers to stop. I pulled into the return lane and > pulled off into the grass. It took a trip to the pits for my ohm meter and a few dead > cycles of the Kilovac to get running again. > > By the time I got back to the pits, I thought there was no way I was going to get fully > charged again. (sound of a cavalry bugle call and horse hooves) Rich Rudman offered to > let me hook up to the ***PFC-50***!! Cool! I hooked up my 4ga charge cord and watched > the voltage rise on my E-meter as Rich turned up the amps on the PFC-50. I yelled out > the volts and quickly switched the e-meter to read amps. 165V...25amps...170V...30amps > ...176V that's enough Rich! He told me to check the amps again. I quickly pressed the > button on the E-meter...GEEEZ!...60 AMPS! > > Needless to say, I was fully charged for the next run. It was a new NEDRA record, 14.725! > I kept using the incredible PFC-50 for charging after each run. I set the record for SC/E > again on a latter run. > > I can thankfully say that the new record was made possible by Rich Rudman and Joe Smalley > and their wonderful creation the PFC-50 charger. > > Rich, who says you didn't set a record at Woodburn this year? Not me. > > Rich Brown > Dualin'7 NEDRA SC/E and SC/F record holder >
