Rango - Build diary

[Revsmin]

Speed 900s have a no load speed of 6500rpm, so the difference is a bit more than you might think!
Edit: derp, that's at 12v :P

Anyway, at 10,700rpm through a 5.75:1 gearbox and 75mm (2.95") wheels, I make the max speed 32.7mph... there's your problem.

Edit 2: if you double the rpm of a S900 you get 13000rpm; as I was running them at 6S on 7:1 through 120mm wheels, shouldn't that give a top speed of about 50mph!? It can't be right, the setup goes about 25mph as the rpm quoted on the S900 data shows... I'm confuse.