outboard overrevs on turns

haddles

Petty Officer 3rd Class
Joined
Sep 10, 2005
Messages
90
I have a quicksilver 300 inflatable and it is a great handler, able to turn on the spot at high speeds and very light. The problem I have is with the engine revving out like it has slipped out of gear on tight high speed turns. This has happened with more than one outboard on this boat. I get the impression that it is cavitation from the wash created by the tail pods from doing these turns. Is there a way to reduce this or is it the price you pay for being able to turn so quickly.
 

Dunaruna

Admiral
Joined
May 2, 2003
Messages
6,027
Re: outboard overrevs on turns

Your prop is sucking air, AKA - ventilating.<br /><br />Maybe ask the question in the 'prop' section.
 

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,657
Re: outboard overrevs on turns

This guy has been selling a type of trim tab for inflatables on ebay for quite some time.<br /><br />
Ribs1.jpg
<br /><br />
Ribs3.jpg
<br /><br /><br />He has a lot of good reviews from his customers.<br />Maybe it would help with your problem.<br />Maybe send him an email and ask him.<br />sellers name is maximarine_com<br /> here<br />maximarine dot com is his website
 

haddles

Petty Officer 3rd Class
Joined
Sep 10, 2005
Messages
90
Re: outboard overrevs on turns

If you can't trust a comment like 'Great Ebayer AAAAAA++++++++!!!!!!!!' Then there is something wrong with the world.<br />Seriously though thanks for the link Roscoe. I'll look into the postage costs but these may help the slow to get on the plane problem I also have.
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: outboard overrevs on turns

Naturally the motor pictured will cavitate in turns. Look at the prop. If it were me I'd take the money for those tabs and put toward a prop with at least some cup.
 

BillP

Captain
Joined
Aug 10, 2002
Messages
3,290
Re: outboard overrevs on turns

That is a typical symptom of the motor being mounted too high. 1" can make a difference.
 

Nos4r2

Lieutenant Commander
Joined
Dec 12, 2004
Messages
1,533
Re: outboard overrevs on turns

Are we not pushing Smart tabs anymore or aren't they made for inflatables?
 

Bigjohn1

Petty Officer 2nd Class
Joined
Jul 19, 2005
Messages
170
Re: outboard overrevs on turns

Another reason why many long-time inflatable owners run long shaft engines on their boats. Performance props for that size engine are few and far between. Either slow down, don't turn as sharp, or get a long shaft. You are tempting fate by continuing to take high-speed tight turns in a light inflatable.
 

danie

Petty Officer 2nd Class
Joined
Apr 11, 2005
Messages
154
Re: outboard overrevs on turns

Now those tabs are what I would call fugly. <br />How on earth does that boat reverse?
 
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