Well raced my d52 for the first time this weekend at the midwest nitro race and all i can say is what a great motor. First this was in my new 3.0 that i never raced yet. Got to the track late so only got about 6 laps in before pratice stopped. Had a few eletrical problems with the car the first two rounds but third round got a good run in qualify in the back of the b main. Started the main and within 3 min was all the way up to third and closing and then had some more eletric problem (spektrum). Kinda disapointing but the motor from rex (d52) is a killer motor super smooth and for the price i dont think you could ever beat it. Thanks again rex for a great motor.