Re: prop for 23' Sceptre
Bracketed motors tend to have more bow rise than transom motors. 6400 rpms is way too much for the 225 Optimax. I thought the factory rev limiter was supposed to cut in at 6300 rpms. Max rpm range for the 225 is 5000 - 5750 rpms, not 6750. Ask your dealer about that.
Since Mercury Marine doesn't list a 14" pitch Mirage Plus, I'm going to assume it was re-pitched down from a 16"P, which is the smallest I see in the catalog. If you're turning 6400, and want to get down to 5750 (max of max rpm range), I would estimate that you need an 18"P Mirage Plus prop.
(Posted in General thread on this topic as well)
__________________
Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes.
Fr. Frank says:
Jesus liked fishing, too. He even walked on water to get to the boat!
Currently without a SeaCraft 
(2) Pompano 12' fishing kayaks
'73 Cobia 18' prototype "Casting Skiff", 70hp Mercury
|