The only parts that are common with the V3 Drive are the rear spinner, the front hub, the front spinner and the props.

Everything else is different, including the motor.

One other feature that we are trying to include with this Drive is the ability to considerably extend the greasing interval. We have an internal grease reservoir, and a grease recirculating system that we hope will extend the greasing interval to beyond 200 flights.

We'd like to get to the point where the Drive only needs greasing once a year, but that's going to require testing to prove.

Brenner ...