I HAD THE TR MOTOR, GOOD MOTOR MOST MOTORS OUT THERE HAVE A TON OF POWER AND GETTING THAT POWER TO THE GROUND IS HARD. I BELIEVE IN THE ASPECT OF HAVING A LITTLE LESS POWER MAKES IT EASIER TO DRIVE. WHEN I HAD THE TR I HAD TO TURN DOWN THE POWER. COULD NOT PUT IT DOWN. MOST OFF-ROAD TRACKS FOR GAS ARE ROUGH AND 1/10TH SCALE TRUCK HAS ALOT OF FINESE WITH IT. I AM VERY HAPPY WITH PERFORMANCE OF THE CVR. ONE THING TO REMEMBER IS GAS QUAL AND MAINS ARE LONGER TIME WISE. YOU HAVE MORE POWER THAN YOU NEED WHICH MAY LEAD TO SLOWER LAPS OR A BROKEN TRUCK. I SEE GAS TRUCK AND 4WHEEL DRIVE ELECTRIC BUGGY AS YOU HAVE TO HAVE WAY TOO MUCH POWER WHICH LEADS TO PEOPLE GETTING DISCOURAGED AND QUITING, IF THEY WOULD SLOW DOWN A LITTLE THEY WILL GO FARTHER AND FASTER