1) Performance issue you are trying to correct.
I am running at 4500 RPM and need to be between 5000-5600 RPM I am running 23mph WOT and I think it should be lots more than that but more concerned with rpm.
2) Current prop manufacturer, model, aluminum or stainless and as a minimum.
SOLAS # MC42 Aluminum
3) Current prop diameter and pitch (required).
11.1 X 13
4) Wide open throttle RPM and speed with an average load (very helpful)
4500rpm and 23mph
5) Engine/drive make, model, year, and HP
1988 Mercury 45HP this is the 4 cyl model (this is considered the OLD "Classic Fifty"
6) Boat make model, year, length and weigh
1997 J16 Carolina skiff, 16', not sure about the weight.
I have tried a couple of diff props with using an 11X 11 and it increased rpm to between 4700-4800 rpm and increased speed to 25mph. Used a 10X12 and it did not change at all. Really not sure what I need to do at this point. The motor has been raised so the cavitation plate is even with the bottom of the boat. Carbs were just rebuilt, all new fuel hoses etc and fuel tank. I do have an SE 300 style dolfin on it and fixing to take that off and try it without it on to see if that will make a difference.
I am at a loss as to what to do next. Any suggestions?
Thanks for the help guys.
I am running at 4500 RPM and need to be between 5000-5600 RPM I am running 23mph WOT and I think it should be lots more than that but more concerned with rpm.
2) Current prop manufacturer, model, aluminum or stainless and as a minimum.
SOLAS # MC42 Aluminum
3) Current prop diameter and pitch (required).
11.1 X 13
4) Wide open throttle RPM and speed with an average load (very helpful)
4500rpm and 23mph
5) Engine/drive make, model, year, and HP
1988 Mercury 45HP this is the 4 cyl model (this is considered the OLD "Classic Fifty"
6) Boat make model, year, length and weigh
1997 J16 Carolina skiff, 16', not sure about the weight.
I have tried a couple of diff props with using an 11X 11 and it increased rpm to between 4700-4800 rpm and increased speed to 25mph. Used a 10X12 and it did not change at all. Really not sure what I need to do at this point. The motor has been raised so the cavitation plate is even with the bottom of the boat. Carbs were just rebuilt, all new fuel hoses etc and fuel tank. I do have an SE 300 style dolfin on it and fixing to take that off and try it without it on to see if that will make a difference.
I am at a loss as to what to do next. Any suggestions?
Thanks for the help guys.
