Since our last test, we engineered and machined new drive flanges and used an entirely new flex coupler between our motor and differential. This resulted in smoother power transfer with no wear or degradation of the components that were experienced with the first coupler.
Cooling was also improved significantly and track testing is all that is left to prove that the problem is solved. After a lengthy discussion with the motor manufacturer it was concluded that the motor was running at a rotational speed too slow for optimal performance. This resulted in two problems. The first issue was that the internal fan was not working at peak performance and unable to provide enough airflow for sufficient cooling. The second problem was that by running the motor at too low an RPM, increased torque loads were caused, resulting in unnecessary heat being generated to produce the same power.
Before our final dyno run in a couple of weeks, Entropy Racing will be building a more rigid sub-frame for the motor and differential to handle the torque loads and give the car a slightly lower center of gravity. Actual track testing is anticipated late in February or early in March. Keep checking back for updates and progress.