[Rhodes22-list] Carb problems with NISSAN outboards?

[Lou Rosenberg]

  Brad,
  Much thanks for the info on ethanol and OBs.   Why would this only 
affect Nissan's -any idea?
  The post below was mine, in my haste I forgot to sign it.
  fly safe,
  Lou


>Peter,
>
>Running ethanol in outboards poses three problems:  1
>- ethanol absorbs water more readily, not good in a
>marine environment, 2 - ethanol has more detergent
>qualities which washes more "crud" from your tank into
>the engine, and 3 - ethanol eats away at hoses not
>designed for it.  Most of the later model 2 and 4
>strokes are supposed to have hoses and o-rings that
>handle it but you still have issues 1 and 2 to deal
>with.  That is precisely why the FAA still doesn't
>allow ethanol blended fuels to be used in aircraft
>that have the STC for auto-gas.
>
>Brad
>
>--- Lou Rosenberg <lsr3 at MAIL.nyu.edu> wrote:
>
>>    Peter, Bill
>>    Sorry to go back to this post but I have found
>>  some word of mouth
>>  info on the Nissan/ Tohatsu motors and want to
>>  confirm it with anyone
>>  on this list's experience.
>>    I heard from a sailor in my marina that the 2004
>>  Nissan outboards DO
>>  NOT  RUN WELL AT ALL with  ETHANOL  added to the
>>  fuel.  In NYC we
>>  have ethanol added during the some parts of the
>>  season .
>>    Does any one have any experiences with bad
>>  carbureators on the
>>  NISSAN or Tohasu OB motors?
>>
>>
>>
>>  >Peter,
>>  >
>>  >6.5 Pitch Prop.
>>  >
>>  >I know mechanically what that means, but I never
>>  understand what it
>>  >does.  What is the standard prop for motorboats?
>>  Why?
>>  >
>>  >I want a prop that will allow me to go slow.  There
>>  is a lot of wind
>>  >and current where I dock.  I want a prop that will
>>  allow me to
>>  >slowly approach the dock, whether or not there is
>>  wind and current,
>>  >without disengaging the prop, without stalling out,
>>  and without
>>  >forcing me to coast in for the last 5 to 100 feet
>>  depending on wind
>>  >and current conditions.
>>  >
>>  >I don't care if I have to rev higher to get the
>>  boat to hull speed.
>>  >
>>  >What prop do I want?
>>  >
>>  >Bill Effros
>>  >
>>  >Peter Thorn wrote:
>>  >
>>  >>Hi Lou,
>>  >>
>>  >>Congratulations on completing that ugly task.  May
>>  everything be downhill
>>  >>for you from here on.  I bought Tohatsu 9.8 for
>>  Raven, but I really wanted
>>  >>an 8hp.  At the time the distributor was all out
>>  of 8s, so I settled because
>>  >>I needed it then.  The motor weighs 82 pounds same
>>  as the 8, the lightest 4
>>  >>stroke on the market.  Added a 6.5 pitch prop,
>>  (for sailboats) and
>>  >>everything works quite well.  95% of the time,
>>  Raven motors at 1/16 throttle
>>  >>and 4-4.5 knots.  It's the best compromise for
>>  most quiet, least vibration
>>  >>and best speed through water there.  Less than 1/2
>>  gal per hour fuel
>>  >>consumption there too.  Any time I would like, I
>>  can twist up to 1/4
>>  >>throttle and hull speed.  Beyond that, just bigger
>>  and bigger waves.  That
>>  >>9.8 can really make some big ones!
>>  >>
>>  >>Just returned from Oriental to Ocracoke --
>>  fantastic trip!  Waiting to
>>  >>exchange pictures with my fellow adventurers and
>>  write up my log notes, then
>>  >>will post to the list.  Not sure I can do better
>>  than Chris G though.   A
>>  >>real South Western Odysseus!
>>  >>
>>  >>PT
>>  >>
>>  >>
>>  >>
>>  >>----- Original Message ----- From: "Lou Rosenberg"
>>  <lsr3 at MAIL.nyu.edu>
>>  >>To: "Richard Smith" <sailnut at worldnet.att.net>;
>>  "The Rhodes 22 mail list"
>>  >><rhodes22-list at rhodes22.org>
>>  >>Sent: Tuesday, October 25, 2005 4:16 PM
>>  >>Subject: Re: [Rhodes22-list] Lou's CB trunk almost
>>  done
>>  >>
>>  >>
>>  >>
>>  >>>  Thanks Richard,
>>  >>>  Ok  I will look into Eldridge, and I do plan to
>>  time my passage.
>>  >>>  So you are saying that an 8hp is plenty for the
>>  Rhodes in most
>>  >>>  
>>  >>>
>>  >>situations?
>>  >>
>>  >>>  Lou
>>  >>>
>>  >>>  
>>  >>>
>>  >>>>< will a 8hp Tohatsu get me around Hells Gate
>>  where the Triboro
>>  >>>>    
>>  >>>>
>>  >>>>>Bridge meets the East River, with the tide
>>  coming in and the current
>>  >>>>>going south?>
>>  >>>>>      
>  > >>>>>
>>  >>>>Five horsepower is plenty.  The speed of the
>>  current in this area can
>>  >>>>    
>>  >>>>
>>  >>exceed
>>  >>
>>  >>>>the hull speed of the boat.  No reasonable
>>  amount of power will overcome
>>  >>>>that limitation.  Get a copy of Eldridge and
>>  time your passages to take
>>  >>>>advantage of the current not fight it.
>>  >>>>
>>  >>>>The heavy engine on the stern will worsen the
>>  hobby horsing tendency and
>>  >>>>associated cavitation in rough conditions.
>>  Exactly when you don't need .
>>  >>>>
>>  >>>>Richard Smith
>>  >>>>
>>
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