The Orion core is a stock motor (27t)
To get more power/tuning your stock (23t or 27t) and 19t motors.
1. Make sure your bushings are properly seated by placing a wooden dowel over the bushing and giving the dowel a couple solid taps.
note: you don't have to knock it through the table.
2.Center the arm in the magnetic field.
When possible use a teflon shim for the one that
will contact the bushings.
3. Cut your comm just enough to get it perfectly round.
4.Align your brush hoods.
The proper method to this is....
Square off the face of a pair of brushes.
Install the brushes and assemble the motor.
Run the motor at 2-3 volts for 30-40 seconds, just long enough to see where the comm is running on the brush.
If the wear mark is dead center of the brush, they are properly aligned.
If the wear mark is off center, use a 4.5mm post wrench loosen the post and phillips screw that hold the brush hood just enough to move the hood a little.
Using an alignment bar pull/push the hood in the opposite direction that the mark was of center on the brush.
Repeat until the wear mark is dead center on the brush.
5. For motors with bushings you can polish the bushings if you like.
How I do it is by using an old arm. I will put some "old style" whitening paste type tooth paste on the armature shaft and a little in the center of the bushing.
I will then assemble the motor, no brushes need.
Next spin the motor up with a dremel or another motor contecting the two with fuel tubing.
Spin the motor for a couple minutes then tear it down and clean it 100% to get the toothpaste out. I use a pipe cleaner to clean the hole in the bushing.
6. Reassemble the motor with the new arm and install new brushes and springs.Oil the bushings with a good quality oil.
7. Run the motor in at 2-3 volts for 3-5 minutes depending on the type of brushes.Once the brushes look to be fully seated reinstall them and run the motor another 20-30 seconds.
Spray the motor down real good with motor spray(leaving the brushes installed) and re oil the bushings.
You are now all set.
Amp draw will vary depending on magnet strength, type of brushes ,springs used and how much drag there is between the shaft and bushings.
Amp draw does not determine the performance of a motor.
I hope this helps