Originally Posted by howardcano

There is no confusion on ROAR's part. You would be amazed at the number of manufacturers that state their products are ROAR approved when they simply are not.



Here are the specs I presented to ROAR when I was technical director:

ROAR Spec 25.5 motor:

Winding:
The winding must be two strands of parallel wire 25.5 turns, each pole.
Each strand must have a maximum conductor diameter of 0.0256 inch.

Resistance:
The resistance between terminals A to B, A to C, and B to C must be at least 102.1 milliohms at 25C, when measured over a range of 20 to 30 degrees C and multiplied by a correction factor of (1-((T_measured-25)*0.00393)).

None of this made it into the latest rule book. Terminal resistance was a new spec I suggested (for all motors) to permit quick, non-destructive testing. Don't expect it to be added to the rules in the near future.

No 25.5 motors have been approved since there are no rules for them.