+1
There can be a different amount of Torque and RPM's between 2 identically wound motors, depending IF the motor is a 540 vs a 550 can size. 550's ( Longer Can) generally provide more torque, and whether you use Hard, Medium or Softer Brushes. Brush Springs also have an impact on this. The Diameter of the Commutator also matters. Usually 2 sizes are used. There are also
Lay Down and
Upright type brushes. This varies from motor to motor, brand to brand. Talking Rebuildables, with Open endbell's. Even mechanical Timing can vary, and is adjustable. 6 degrees of mechanical timing is best for most brushed motors. Most efficient this way.
Holmes Hobbies will even set the timing for you when you order one, for a very small charge. They come set with Zero degrees timing otherwise.
But from brand to brand, there will always be performance differences, The quality of the Mfr's Winding process even matters from brand to brand, and will differ.
So its possible that a 9 Turn would perform no better/ faster than a 12 Turn in some scenario's. Not much of a noticeable performance may result.
Just, in theory, a 9 Turn should be the faster motor, all things being equal.
BLX is better.
Something to consider at some point.
Brushed motors are a different animal altogether. And don't perform as consistently, as BLX will. Need regular cleaning out and brush maint. to always perform at its peak.
My 2 cents.