28' POWER CRUISER PROP SIZE

[Capt Dick]

Have a 200hp volvo with 18x18 prop not turning up to full rpm. Do you think prop size is too big or something else?



captdick@home.com

[Robert Davee]

If your model is one of the heavier ones like the Flybridge model, your prop has too much pitch. An 18x16 would in my opinion be more appropriate. Remember that much depends on the way the boat is loaded - fuel, water, passengers, and equipment. A prop rebuild or repitch job should cost less than $130.00. Sometimes it takes a number of refittings to find the exact pitch. Your diameter is correct for the 28' power cruiser.

There are a number of really sharp propeller people who frequent this web site so perhaps you will get some more detailed replies.

Have a 200hp volvo with 18x18 prop not turning up to full rpm. Do you think prop size is too big or something else?

builder@midcoast.com

[Edd]

Have a 200hp volvo with 18x18 prop not turning up to full rpm. Do you think prop size is too big or something else?

A "dirty" bottom, or a too-tight stuffing box gland can cost me almost 200 R.P.M. but anything beyond that starts showing up in a slight increase in engine temp. Has it ever ran to 3900 with that prop?..With a freshly cleaned bottom my 200FBturbo will turn 3900
without any temperture increase. But I don't know what my pitch is.
All I know is that it is factory...When I have it hauled I will check and let you know.
Edd




Eroger711@AOL.com

[Dick]

Have a 200hp volvo with 18x18 prop not turning up to full rpm. Do you think prop size is too big or something else?

A "dirty" bottom, or a too-tight stuffing box gland can cost me almost 200 R.P.M. but anything beyond that starts showing up in a slight increase in engine temp. Has it ever ran to 3900 with that prop?..With a freshly cleaned bottom my 200FBturbo will turn 3900
without any temperture increase. But I don't know what my pitch is.
All I know is that it is factory...When I have it hauled I will check and let you know.

Edd
Thank you. I will let you know what the mechanic says.

cptdick@home.com