Originally Posted by Cookee
It's not blow out - the whole back of the boat goes sideways and believe me it gets your attention!
Waste of time going up 4" of pitch if you're not hitting top revs with the 15" so I don't understand how you can get the same RPM? Is the 19 a three blader and smaller diameter by any chance?
The holes in the prop are irrelevant at this speed
Is the boat porpoising at all?
Have a look to see if there is any pitting on the blades on the four blader.
Just my 2P worth!
Thanks all for your responses....props really are proving a black art to me....
Ran some trials today....the effect goes away with the 19 pitch....
The revs definately show the same /similar with both props (as posted on earliuer thread can't get my head around this)....probably inaccuracy in the gauge (?) as has been suggested....therefore, concede it may be a rev limiter, although can't find any mention of a rev limiter doing a brief internet search....perhaps someone who knows could advise.
No pitting of the prop Cookee, and as above re the revs
dia of both props the same....bizarre!
Anyway, relieved it doesn't appear to be an engine fault! ALTHOUGH, it threw a brief check engine alarm "SENSOR POWER" as i came off the water Typical
Cleared now and hasn't reappeared...don't have my manual to hand so not sure which sensor triggered it....anyone know off the top of their head?
Back out tomorrow....
Thanks again to all