by rbarber » Thu Oct 17, 2024 5:50 pm
As I said before, I have the same setup; Jab 3300 with 54x62 Sensenich prop. I have a MGL Enigma counting RPM, and the counter setting is 6 pulses per revolution, but I would need to verify that, as it has been more than 15 years since it was set up. I typically run 2950-3000 RPM on climb out at 80-90 mph. For cruise at ~3000ft I run 2750-2800 and get 135-140 mph. 2900 RPM at the same altitude will cruise at 150 mph If I go up to 8,000ft or higher, I run 3150 RPM and get ~165-170 mph. I have had similar results for more than a decade. I am curious in what you find is different on yours.
Can you send me a picture of your prop taken from the end of a blade looking toward the hub? I may be able to calculate the pitch from that.
'Best,
R.
N157SX, AKA "Sexy Hexy"
S/N 271
~1300 Hours (400 hours with a Hula girl on the dash)