ORIGINAL: Brenner

Well, our version two Contra Drive design is finished, and Mike and Andy have all the drawings and specs. Attached are two profile views showing a Hacker C50 installation, and a Neu f3a Motor installation. I'm also showing a performance chart that shows predicted performance with various props, and gear sets.

For now the numbers are relative, because I haven't had the chance to corrolate the numbers with actual flight test data, but the relative differences should be a pretty good indicator of how performance changes with each setup. Our current thinking is that the speed is selected by choosing the appropriate prop, and then battery/power consumption is fine tuned for each setup by selecting the appropriate gear set.