FPVCycle 16mm Motor - 4100Kv

Great motors

They made my AOS 3.5 feel more like a 5".

Great 3.5" motor

I got a set of these to put on a Botgrinder/Ummagawd Grinderino when they updated the arms to accept the 9mm mount. I think this is the right amount of motor for a slightly "heavy" 3.5" build - a lighter (sub-250g) build can get by with less, but the Grinderino is a chonkier frame and benefits from a little more power. The blurb says these are notchy motors, and they are if you just spin them by hand but I haven't noticed any detrimental effects on the tune. Here again, a stiffer/heavier frame helps. Anyway, these are good for a build about that size.

run well and good looking

real strong low in the throttle, I am using them for a heavy 3.5 build