RC Brushless Motor Size Chart. The size of the brushless motor is indicated by four digits, the first two digits indicate the diameter of the motor housing, and the last two digits indicate the length. For example, “3660” means 36mm in diameter and 60mm in length. Different size motors are used in different cars.

An easy way to estimate power needs for RC hobby applications is to use 100 watts per pound for sport flying, 150 for aggressive aerobatics, 200 watts per pound for 3D flying. The chart below also lists the roughly-comparable glow and gasoline power systems for reference.

Many time pilots ask if they can change a prop, motor or esc in an RC aircraft and if that aircraft will perform. A watt meter will answer your questions... Brushless motors use a standard numbering scheme to describe their physical size and Kv rating. For example: let's assume we have a 5055-3000Kv Brushless Outrunner Motor.

Brushless Motor Size Comparison Chart. One thing I’ve found with RC aircraft is that there are two different ways of measuring a motor size. Manufacturers who mainly produce, or started by producing, quadcopter motors; base the sizes on the stator.

Choosing a brushless motor for an RC plane or quad is quite a tricky process for new pilots. Here's what the differences are. If you’re wanting to upgrade your brushless motor(s) on your favorite model or quadcopter, or need one for your latest scratch build, you may want to know what the differences between various options are.