I heard they sound a little different because of the fan inside. Do you think it would be enough motor for a 9lb. truggy on 4S? I am only looking for about 35mph max.
I used the 600L in my BPP truck with 2 36v A123 packs. My truck was at 14lb. You should easely get your truck to go 35mph.
Definately a better motor than a feigao. I have run both the l and xl on 5s in an emaxx. Both have really good brakes, you will have to turn the brake force down. They do not spin up as fast as an inrunner, but the torque stays very high from startup to high speed. Different to drive than an inrunner, but works great. Would be good for racinf IMO cause the power delivery is smoother.