rc plane brushless motor size chart

Looking for the perfect brushless motor for your RC plane? Then you’ve probably stumbled into the maze of size charts, right? It’s a bit overwhelming at first — numbers and letters, figures bouncing around, trying to tell you what fits best. But trust me, once you get the hang of it, matching the right motor size feels almost intuitive.

Let’s start with the basics. A brushless motor’s size isn’t just about looks; it’s about power, efficiency, and fitting into your plane. The common way to gauge this? Think of the motor like a shoe. Size 40 or 50 means something, but which one actually supports your flying style? If you want speed, maybe the smaller, lighter options are tempting. If endurance is your game, a bigger motor with more torque might be better.

You’ve probably seen numbers like 2204, 2206, or 2212 on those charts. That’s a standard naming convention — first two numbers hinting at the stator’s width, the second set at length. It’s like a mini code. For example, 2204 means it’s 22mm wide and 04mm thick. The wider and longer the stator, generally, the more power you get. But it’s not just about raw size, or there’s no point in scaling up if your frame can’t handle it.

What about the "kV" rating? That’s another piece of the puzzle, indicating how many RPMs per volt the motor produces. Higher kV, more speed, less torque. Lower kV? More pulling power, better for heavier planes. You want a match where your ESC, propeller size, and battery capacity all line up. It’s a balancing act.

Ever wondered how to pick the right size chart? Think about what kind of plane you’re working with. A tiny park flyer needs a small, lightweight motor—say, a 1806 or 2204 with a high kV. For a bigger trainer or scale model, something like a 2212 or 2812 with moderate kV does the trick. The weight difference isn’t just about looks; it directly affects flight stability, responsiveness, and how long you can stay airborne.

And let's not forget efficiency. Not every big motor is better—it’s about how it delivers power without draining the battery faster than you can say "launch." Sometimes, a mid-sized motor balanced with a good propeller gives you the best run time and plenty of thrust.

In practical terms, choosing the right motor is like tuning an instrument. Overdo it, and the entire composition feels off. Underdo it, and you’re stuck. When you pick the right size, the plane reacts smoothly, climbs strong, and offers that satisfying "fly" feeling.

So, who’s this for? If you’re eyeing a project that demands precision, size charts become your secret weapon. You want the best performance, a bit of knowledge in your toolkit, and a wish to keep things simple without sacrificing quality.

Don’t sweat the details too much—once you're familiar with these size markers, matching up becomes second nature. Whether you’re dreaming about long endurance flights or high-speed sprints, choosing the right brushless motor size is your first step to taking that next leap in RC flying.

Established in 2005, Kpower has been dedicated to a professional compact motion unit manufacturer, headquartered in Dongguan, Guangdong Province, China.