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Columbus Electric (Offline)
  #20 1/11/12 11:20 AM
This was a Ford Focus style all-electric Midget from Columbus Electric Motorsports. It was developed for display for USAC. You should be able to see it running as a demo in Ocala in February at Bubba's Winter Dirt event. It has a 700V electric motor/Inverter that will be running at about 500V for the Ford Focus Series. It has a large enough battery pack to provide energy for practice or qualifying laps, 2 qualifying races, and the feature event or final. Since you get max torque at 0 RPMs with a permanent magnet electric motor, its torque curve ... and therefore responsiveness ... is significantly better than an I/C engine's. The Midget's powertrain is software limited/controlled for safety, but uncontrolled the 0-60 MPH times would be about half that of the comparable Midget IC engine and the top speed would be significantly higher as well. As utilized in an actual Ford Focus race, it would simply feel more responsive at speeds less than the top speeds for the track. At the top speeds for the track (especially 1/4 and 1/3 mile tracks), driving, set-up, "drifitng and lifting" through the turn, etc. still play a very significant role in both platforms ... but all the speed and power is there. Electric racers bring an interesting paradign shift to powertrain ownership in that the motor/inverter lasts for 20+ years without maintenance and the battery packs would last for 3+ years without maintenance. So the upfront costs are a bit higher, but the resale values are much, much higher and the operating costs are very significantly lower. In the future, it may even be possible to use the same electric powertrain for multiple engine classes that are racing on the same chassis (simply using software controls to operate as a Ford Focus Midget, an XYZ Midget, or an ABC Midget in the same weekend of racing).