Well in retrospect, 1/8th kyosho is pretty heavy.. and limited to gearing with the factory mount. But was able to pull 55-57mph with the kyosho esc as well.. I’d imagine sticking it into a 1/10th and the right gearing. You should be able to pull 70’s pretty easyThanx for the response. I wonder if it can get me some good speeds. I was gonna try it in a big rock that I converted to a speed run car.