Upcoming Castle Outrunner Motors

[sikeston34m]

Let's talk about why outrunners have more torque.

A Medusa 36-60's armature is 15mm in diameter and is 35mm long. It has 4 VERY strong magnets, thus making it a 4 pole motor.

An AXI 2826's stator size is 28mm in diameter and is 26mm long. The ID of the magnets inside the rotating endbell is 29mm.

The larger diameter is "easier" to turn because of leverage. This is why there's a knob on the door instead of just a shaft sticking out. LOL

Take a look at my avatar. For each phase shift, there are 4 teeth of the stator energized at any given time.

This means, at any given time, there are 4 magnets in use at any given time. More Magnets, greater force.