sizes

I'm scratch building the FT Cruiser and would appreciate all the help that anyone can provide in designing the power system from the ground up. I know that I can use the parts specified by Flite Test but I really want to learn the fundamentals for future builds. I'm not into 3D flying yet so I...

Hi guys Been building my own foamies for a little longer than a year now, but I lack the understanding around motor sizes. As an example, a 2218 Brushless Outrunner, what does the 2218 mean? Would be great if someone can piont me in the right direction. Thanks for sharing the info ;)