Quote:
Originally Posted by SailorChlud
It is the typical analog tach, not digital, unfortunately, but it is fresh from the dealer last month. Hope it is close to accurate.
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First new analog tach I bought from the dealer for my old 115 read high by about 300 rpm, leading me to buy the wrong prop! At least they gave me another tach after they tested the first one. I'd have dealer check your tach accuracy before you buy a prop!
Quote:
Originally Posted by SailorChlud
One other thing - the 17p prop has a good bit more cupping on the trailing edge than the 15p - could that make a big difference in sternlift?
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I think trailing cup is typical of a bow lifting prop that's normally used for max WOT speed. I believe a stern lifter will have a lot of cup in the tip, although any 4B prop will give extra stern lift.