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EAA AirVenture Oshkosh RSS Feed Electric Lazair Entered in EAA Electric Flight Contest
Electric Lazair
Dale Kramer expects to fly his Electric Lazair on floats, but says first flights will be in wheeled configuration.

Editor's Note: The $60,000 Electric Flight Prize has been postponed until EAA AirVenture 2012.

One entry in the EAA's $60,000 Electric Flight Prize during AirVenture comes from a well-established design, the Electric Lazair, based on an ultralight designed more than 30 years ago by Dale Kramer, EAA 145132. Between 1979 and 1985, his company, Ultraflight, produced about 1,200 kits. Calling the twin-engine Lazair "an ideal vehicle for electric conversion," Kramer wrote that he has dabbled in trying to "electrify" one several times.

"Each time I was thwarted by many issues but this time I will do it," he wrote on the RCGroups.com forum, citing an electric Lazair flying in England for a couple years using Predator motors.

He's drawing on the R/C world, which he said "has been invaluable to me in obtaining knowledge that I need to build this unique version of the Lazair."

Here's the powerplant configuration Kramer has installed in his electric Lazair:

  • Two 10-kilowatt Turnigy CA120-70 motors with 32-12 props reconfigured to WYE terminations
  • Two JetiSpin OPTO 300 controllers
  • 96 pieces of Zippy 5000 mAh cells arranged in six packs of 16s4p each.
  • Six of FMAdirect PL8 v2 chargers, each one running off two 12-volt, 900-watt Dell Poweredge 6650 power supplies wired in series to get 1,800 watts at 24 volts.

Kramer's tests show he can expect close to two hours of flight endurance with one-hour recharges. He plans to fly the airplane this summer from his home in Hammondsport, New York, to the Atlantic Ocean, cross-country to the Pacific, then to Oshkosh before returning home.

Three flight competitions, along with electric aircraft innovation evaluations, will take place during AirVenture with a total of $60,000 at stake for winners of each category as well as the overall winner of the Electric Flight Competition. The prizes and support for the competition come from Wicks Aircraft Supply, Dynon Avionics, Aircraft Spruce & Specialty, and AeroLEDs - four companies active in the sport aviation community. To learn more, click here.

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