"RCE" wrote in message
...

"Bryan" wrote in message
. com...

"RCE" wrote in message
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"Dave Jones" wrote in message
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I just re-proped my boat -- my range is supposed to be 4200-4600

is this under "best case" conditions? (flat water, no wind, light load,
trim
optimised, etc)

Or "no mater what, when you're "WOT" your engine should be between
4200-4600?

Thanks
Davie

It should be optimized for your normal loading and usage and depends a
lot on the size of your boat. That RPM range indicates a likely I/O
setup and I assume it's a single engine. You may find out, as I did
years ago, that you will have two props ... one for normal use with 2 or
3 people aboard and a second, lower pitched prop for when the whole gang
shows up for a boat ride.

RCE

www.eisboch.com


Are you telling us that you actually changed props each time your guest
list changed?


No. Not every time. Most of the time there was only one or two people on
the boat and I had a 14 pitch prop. Once in a while, if I knew we were
going to have four or five people on the boat for an outing, I'd change it
to a 12 pitch. The 12 was originally an 11 that I had re-pitched after
experimenting. This boat was an older (1982) Century 7000 Express that
was heavy and underpowered with the 260 hp GM 350 engine. It was stern
heavy and struggled to get up on plane with more than 3 people on board.

Changing the prop was a 5 minute job, even when the boat was in the slip.

RCE

www.eisboch.com

This alternating prop, so to speak, idea is intriguing. I've been wondering
how to deal with the variability of having me and 4 12-year old girls on the
boat or two families with large adults. If the prop change for my boat is a
minute job once I decide which prop to carry as my alternate ...