No need too, you can use that 130mm 7.5-1 gearratio speed 900 setup at a much lower voltage and still get respectable power.


Let us say, 10S NiMH=12V

Speed 900@12V=6600 rpm

6600/7.5=880rpm

130mm*pi*880=359216mm/min= 359216/1000000*60=21.5km/h

Even dropping back to 3S Lipo gives you 19.9km/h
Or 3S LiFePo = 17.7km/h