New castle brusless system?

[ta_man]

Originally Posted by alport

There is something wrong. 1409 is 57mm long but on towerhobbies 1410 motor is 53mm long

Not necessarily something wrong. If you have ever owned a Neu motor you would know there is a lot of empty space at each end of the windings inside the can that is thus included in the dimensions of the can. Castle probably just did away with some of the empty space (especially on the back end).