This little engine fits in the palm of my hand and makes 1.8 horsepower from just 2.95cc. That’s insane. So, how does something this tiny make so much power? Three reasons. First, it’s a two-stroke.

A radio-controlled car is one of the most popular toys for kids of all ages who like things that can go fast. But what if you’re tired of the battery-powered RC cars that dominate shelf space at toy ...