This thing was my FIRST motorized project - 3 hp Tecumseh off a Toro snowblower - Plenty of power ! I think I hit 30 mph on it once - felt like 100. since then - geared it down to a little safer 22 - 24 mph. Only has a front brake that clamps like a vise - gotta be a little careful on this thing. NOT for the amature rider.