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worewren
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Joined: Thu Nov 19, 2009 8:23 pm

New from sailing to toons question?

#1 Post by worewren » Thu Nov 19, 2009 8:34 pm

I just bought a 1996 Harris Omni 20 cruiser with a 40 Evinrude. Never had anything like this so I have had it out on the water and it runs perfect accept when I get to about 3/4 throttle and it seems like the prop loses contact, is this cavitation? Still turning same rpm but it losses thrust and slows down and then starts thrust again? I am moving at a pretty good clip and creating a good size wake. I have adjusted trim and that helped get to a little higher speed but at some point it still losses thrust.
What should I be expecting out of a 20' 40ph in rpm and speed?
Thanks

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badmoonrising
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Location: Chesapeake City, Maryland

Re: New from sailing to toons question?

#2 Post by badmoonrising » Thu Nov 19, 2009 8:54 pm

Welcome ! Sounds like cavitation to me. I wouldn't expect more than 15 mph with just one person aboard, a few mph less with each added passenger.
Ed, Cheryl, Ethan and Aspen.
2013 Sun Tracker Party Barge 22 w/90 HP Mercury, "Hellrhighwater 2"
2014 E-350 Extended XLT.
Chesapeake City ,MD

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