Wanna bet? Any time you transform energy (to motion, convert voltage, etc), you get heat due to efficiency losses. That's why AC adapter power bricks get warm to the touch.
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A single AC motor located directly in front of the rear wheel powers the Enertia TTR. Manufactured by Perm Motor in Germany, the compact motor is a brushless, permanent-magnet design that is more efficient and durable than the simpler, less-expensive, brush-type motors most other TTXGP entries used. The peak efficiency rating is 94 percent (compared to approximately 25 percent efficiency for the very best internal-combustion engines), and the motor is liquid-cooled to minimize heat-related losses, with a tiny radiator mounted below the headstock. The motor's continuous-power rating is 20 kW, with a peak power rating of 30 kW. In TTXGP tune, this translates to 30 horsepower and 53 lb.-ft. of torque at the rear wheel. Custom sideplates allow the motor to be mounted as a stressed member, and there is no gearbox or primary drive; the drive sprocket mounts directly to the motor output shaft. A cush drive on the rear hub minimizes driveline lash.
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Originally Posted by Rider
Or radiators.
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