The awesome team of maniacs over at EV West continues to make innovations in practical electric vehicle performance. They like to use Netgain brushed DC motors with Evnetics controllers to produce motorsports-capable power for a fraction of the cost of equivalent high voltage AC systems. The Netgain motors are based on existing fork lift technology and have are proven performers in the EV community. The SRI EV1 uses two motors like their 700 horsepower E36 M3 Pikes Peak Car. The motors are stacked vertically at the rear of the buggy to work with the VW style transaxle. EV West chose to go with two 1000 amp Evnetics Soliton 1 controllers instead of one 3000 amp Soliton Shiva like in the M3. My guess is that using the two smaller controllers allows better torque modulation accelerating out of turns. They had to turn down the power from the Shiva in the M3 at Pikes Peak because it was breaking the tires loose too easily. The dual Soliton 1’s probably makes it easier to put down power on a two wheel drive vehicle on a loose surface. That doesn’t mean the SRI EV1 is a slouch. It makes 500 hp and 700 ft-lbs of torque with a range of 100 miles. Check out the testing footage:
EV West just posted the footage of the full Pikes Peak run of their 700 hp electric E36 BMW M3. It turns out their car was the first EV conversion to compete in the hill climb. They turned the power output down after they were getting a lot of power oversteer in qualifying. The result was a pretty clean and straight forward run up the mountain on race day. It was also pretty fast. They posted a time of 11:58.929 which was obviously the EV conversion record, but it was also good for fourth overall in the EV category.
EV West just posted these videos of their 700 hp E36 M3 race car qualifying and practicing for this year’s Pikes Peak International Hill Climb (PPIHC). The course is split into three sections to allow the drivers to pre-run the course before competition day. Qualifying is done based on their time for the lower section. It turns out the car was making too much power which was causing some powerslides on corner exit. The team derated the controller to help with traction.
Part 1: Qualifying the on the lower section. The motor controller cut out for 30 seconds right off the bat, but then it fires up again without any problems. The alarm is required for electric cars so that the people out on course can hear the car coming.
Here’s another compelling argument for our case that electric cars don’t have to be slow, boring and/or ugly. This is the 1995 BMW M3 built by EV West of San Diego for the Pikes Peak International Hill Climb. The car is running the best performance brushed DC motor technology currently available. Under the hood there are two NetGain Warp 11 HV’s end to end being fed by a EVnetics Soliton Shiva that’s capable of delivering 3000 amps.
Twin NetGain Warp 11 HV’s connected to a Powerglide transmission
The result is 700hp which is transferred through an externally pumped Powerglide Transmission. The external pumping means the transmission doesn’t need a torque converter. The motors are connected directly through an input shaft from a Turbo 400. Continue reading →