Try 15 hp and NO reverse thrust.  I only use it to back into the slip  (and a 
few times in '06 to back out of the channel so I could sail out to the  race 
course when it wouldn't go forward) and only back in because my wife  insists 
on it.  But we basically motor past the slip very slowly and pull  the boat in 
with the docklines.
 
 
In a message dated 2/6/2008 3:34:07 P.M. Eastern Standard Time,  
[EMAIL PROTECTED] writes:

Doesn't someone make  something for an outboard that is similar
 
OR
 
If you have a 6hp  would it not be easier to just buy a bigger motor????  Or 
does that take  the challenge and innovation out of the project
 
Paul
 


-----Original Message-----
From:  [email protected] 
[mailto:[EMAIL PROTECTED]  On Behalf Of [EMAIL PROTECTED]
Sent: Wednesday, February  06, 2008 3:21 PM
To:  [email protected]
Subject: Re: catalina27-talk:  Kort Nozzle


What about on an outboard where you could pull it out of the water  while 
sailing?  My biggest concern would be the added weight so far  aft.
 
 
In a message dated 2/6/2008 2:46:33 P.M. Eastern Standard Time,  
[EMAIL PROTECTED] writes:




There is a certain unavoidable dichotomy about  this. I cannot see how a
racing sailor would want it, but a cruising  sailor would probably really
like it (depending on his waters). We grow  a lot of marine flora and fauna
here in Connecticut, and I wouldn't  want it, whether racing or cruising. But
wherever it could be kept  clean, it would make a serious difference in
thrust, at a cost in drag  (especially under sail).

Similarly, there is an even simpler device  said to give certain beneficial
effects to an outboard. Back around  1987, I was editor of Powerboat Reports
and we decided to test a device  called the Dol-fin. I don't know whether it
is still available.  Essentially, it is like adding stylish wingtips to your
anti-cavitation  plate. There were various claims of fuel efficiency, speed
and control,  I believe. As I recall (20 years ago now) there was no
appreciable  difference in any parameter when we tested it in real-life
conditions.  You were trading off some well-understood aerodynamic  (er,
hydrodynamic) benefits versus wetted surface (wetted surface  always means
drag).

--Dave S.


On 2/6/08 1:56 PM, "tim  ford" <[EMAIL PROTECTED]> wrote:

> Not to be unkind,  but....ummm....
> 
> man, how many ways does that thing say, "  S L O O O O O O O O W."
> 
> whatever maneuverability it  provides, I hope it compensates for the
> piggy-factor.
>  nothing like doubling your wetted surface,  skin friction,  turbulence
> and....shudder...drag.
> 
> Is it a  recreational vessel or does it have some sort of limited
>  maneuverability function
> in the commercial vane?
> 
>  Cutter as in "cutter rig" or cutter as in..."small, armed vessel?"
>  
> --tf
>   not trying to be mean about the  thing
>    







 
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