Originally Posted by
MCTYZ125
I USE THIS ENGINE FOR A MRX3 AND MRX4
I LOVE THIS ENGINE, THE MR ENGINES ARE GRP BASE MOTORS
THESE MOTORS ROTATE AT 48000 RPMS
WITH A 3.5CC SIZE
IT IS A SCREAMER
YOU HAVE TO BE CARFUL WITH THESE TYPE OF ENGINES
THEY ARE HARD TO TUNE CAUSE OF THE HIGH PITCH SOUND
AND IT HAS TO BE WELL MANTAINED AFTER RUN
48000rpms?no way!!!43000-44000 yes.
they are good motors but not like the nova or picco in power.