Excel worksheet for some of my speed runs

[RC-Monster Mike]

The rpm/volt on the Feigao motors is also under no load. The loaded rpm/volt of the 8s is actually slightly less than 4000(3990?). This, and some battery voltage drop makes a lot of sense to me. With aggressive gearing, the voltage is probably .9-1 volt per cell. This, along with the 3990 rpm/volt figure probably makes a lot of sense on paper(spreadsheet). I would certainly expect higher speeds than you are getting, though. I am curious how well your batteries are deliovering the voltage under load(not all gp3300s are created equal-mah after charging has nothing to do with voltage under load, either).