My Mobat was never that fast. I had the 1985 version. I now have the 1998 version too, along with the CAT MKI and CAT MKII. It's funny...every one of those motors have different output. One of my CAT MKI's is Real fast, but no torque....the Mauler is slow, but can climb 70% inclines...I think power in these little motors is a crapshoot!