another prop question,Maco...,RAP...
what i've seen the last few months in this forum,Macojoe and RAP seem to have the most prop expierence, but anyone else in the know, feel free to respond.My 1993 Johnson 150 oceanrunner spins a 15 1/2 x 15 pitch 3 blade aluminium. Based on my tach, my comfort/speed cruise is about 3900 rpm's at approx 29-30 mph[no speedometer or gps just a good est.] My wot, tach reads 5100 at approx 36-37 mph. I cant say for sure how accurate the tach is but at cruise speed the motor "sounds" perfect for how fast it's moving,however, I think the rpm's should be a bit lower...maybe 35-3600???? Now, I should have a redline of 5500, shy of standing on the throttle with both feet, I get no more than 5100,and the motor is just purring [well maybe more than purring]but I know it has more.Now, I'm not trying to fly to the moon ,or chase Havis across the Gulf, but maybe a smaller diameter and a 17 pitch may get me where I wanna be.Do these numbers sound correct???I'd like to see a slightly lower rpm at cruise and a bit more on the top end.Whatta ya think??
|
Threaded Mode