Atm i have a merc 98 115hp with a 19" prop on it. Pullin 5500Rpm at wot, obviously too high. What should i drop too, at 21" to get me back under 5250rpm?<br /><br /><br />cheers
a 21 will get you under 5250. you need to take load and usage patterns into consideration when repropping. is the 5500rpm with a light or normal load, skiing or cruising? etc.
