Questoin: Does this speed suggest appropriate prop versus gearing?

ihaveabrownboat said:

Had boat on the water this past weekend after it had been out of service for a long time and worked on a lot over the last several weeks to get it ready. Have read threads where a proper choice of prop was suggested relative to engine speed and gearing. Since I have no idea what the prop is that came with the boat am hoping someone can suggest if this setup sounds like an ok combination.

Boat is a 17" bowrider. Weight should be 1950-2000 full of gas, oil, stuff and the people that were in it. Cruising RPM seemed to settle in between 2800 and 3200. Speed (GPS measured) in that RPM range would be 32-35 mph. Drive is OE gearing in a 1980 Mercruiser 165.

Is this enough data to suggest whether the rig is wearing a generally appropriate prop?

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ihaveabrownboat said:

Thanks. Will do a WOT run next time out and get that data also. Just looked at the post mentioned above and read of the other information required to get a fuller answer. Can obviously measure the prop's outside diameter but don't know how to measure the prop's pitch. So when the time comes will offer what I can and go from there.

Click to expand...

ihaveabrownboat said:

Thanks. Will do a WOT run next time out and get that data also. Just looked at the post mentioned above and read of the other information required to get a fuller answer. Can obviously measure the prop's outside diameter but don't know how to measure the prop's pitch. So when the time comes will offer what I can and go from there.

Click to expand...