Hey Mike,

One of the benefits of the Contra Drive is that is has replaceable gearsets, so it's very easy for me to swap the 9.89:1 gearset for a 10.15:1 gearset and bring the mah down to about 3600 mah. I'm going to watch the power consumption as the weather warms up, and swap the gearsets if it becomes needed. Also I haven't tried mixing a 22x18 front and a 22x20 rear prop combination yet. Dave says that this combination is saving him 300 mah or so, with no loss of performance.

Brenner ...