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In-wheel motor

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BackgroundEdit

The 2009 winner of the TTXGP (Ag ran at 140.71km/h for 25 minutes.

A 2010 MotoGP bike can reach 167km/h on a straight and averages about 165km/h for 45 minutes.

A wheel with an 18" rim and a racing tyre means makes about 530 revs per km. Therfore:

  • 140.71km/h = 1242.94 rpm
  • 165km/h = 1457.5 rpm
  • 167km/h = 1475 rpm

In-wheel motorsEdit

According to data on the Protean Electric their in-wheel motor runs up to a maximum of 1400 rpm on 400Vdc which would be 158.5km/h; 12.6% increase over the average speed of the 2010 winner. The in-wheel motor is also likely to be slightly lighter and more efficient than motors powering wheels via a belt or chain. The final advantage of the Protean Electric motor is the built in regenerative braking that should give a huge advantage (and even more weight savings) over other drive train systems.

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