ORIGINAL: DrMotor
7. I have purchased several of the SK3 motors -indoor-size, 30-size, 50-size and 60-size. They come in an identical box to a Hacker motor, have in general identical accessories. And when you take these SK3 motors apart, they have exactly the same stators and windings to the matching same-size Hacker motor.
Apereira, it would be wrong to make any assumption about these quite impressive SK3 motors, from a Turnigy motor that you purchased some years ago.
Times have changed ....
since you purchased some of those motors. At least if you provide pictures of those motors. Some of us may have equivalent hacker motors to take a look at.
So, would you please post pictures of the motors ? identical box, identical accesories and exactly same stators & winding.
If you can, please include caliper measurements and digital scale weight display.
Also, since you purchased the motors, have you ran those side by side with equivalent hacker?
Only way to find out if something is identical to Hacker or other brands, is to run them on exact same equipments including prop, battery & esc.
If they are same, they should show at least very close measurements.