[C320-list] [c320] Drive shaft problem

Thu Jun 29 18:05:25 PDT 2006

Al,

  The reason for no closer than 6 inches as I recall being told is that 
the cutless bearing needs water flow to keep cool and lubricated to 
prevent premature wear.  A zinc closer than 6 inches interferes with water 
flow for the cutless bearing.

   -bill
   Harmony #859

alahlm at comcast.net wrote:     Ralph
   I have been told not to put a zinc closer than 6 inches to the strut for what ever reason i don't no.
    Al Ahlman
       #476

  -------------- Original message -------------- 
From: "Ralph Winkler" <capt-wink at aepro.com> 
    v\:* {   BEHAVIOR: url(#default#VML)  }  o\:* {   BEHAVIOR: url(#default#VML)  }  w\:* {   BEHAVIOR: url(#default#VML)  }  shape {   BEHAVIOR: url(#default#VML)  }        st1\:*{behavior:url(#default#ieooui) }              The easy way is to just mount a shaft zinc about a 1/2" to 1" from the strut.  Solved two issues with one stroke.  Life is grand.

  Ralph Winkler
  #394
  Milwaukee
    ----- Original Message ----- 
  From: Warren Updike 
  To: c320 
  Sent: Tuesday, June 27, 2006 9:17 AM
  Subject: Re: [c320] Drive shaft problem

  Just read some good advice.  To prevent the shaft from slipping back to the rudder should the shaft come out of the coupling, coupling break, etc. place a SS hose clamp around the shaft in front of the packing.
    ----- Original Message ----- 
  From: Jeffrey Hare 
  To: c320 
  Sent: Tuesday, June 27, 2006 7:57 AM
  Subject: RE: [c320] Drive shaft problem

    Hi Irv,

     It shouldn’t be a big deal to replace while in the water.

  What likely happened is that the two set-screw Bolts that screw through the rear half of the coupling to lock the coupling to the prop shaft weren’t wired in place.

  In this picture, you can see the two Square Headed set screws I’m talking about on the aft half of the coupling flange.  They’re wired to prevent them from loosening.

  http://www.catalina320.com/gallery/technical/P4130002?full=1

  None of this should be a big deal unless the shaft was bent somehow.   

  -JeffH

---------------------------------

  From: Irv Grunes [mailto:igrunes at comcast.net] 
Sent: Monday, June 26, 2006 9:39 PM
To: c320 at memphis.flexihostings.net
Subject: [c320] Drive shaft problem

    Guys,

    Just got a call from one of our partners on the boat.

    Some how " the key to the drive shaft going into the coupling broke" and the end of the shaft is about three inches from the coupling.

    Does anyone know what might have happened?

    What is the shaft diameter, because someone in the boatyard suggested putting a pair of vise grips on the shaft to keep it from turning and falling back to hit the rudder in case we have to get towed to a boatyard.

    Does any one know the size of the key that goes into the coupling, is it metric or English in size/

    Has anyone ever reinstalled a drive shaft into a coupling while in the water and what to look for.

    We replaced a bent bronze shaft about three years ago with a Stainless Steel shaft at Markley's on Middle River

    Planning on going down to the boat tomorrow.  Need a suggested list of tools to bring.

    I can always have the boat towed to Markleys, but would want to buy a zinc ( I think the shaft is 1 inch Diameter) to put on the shaft to keep it from getting too far back to the stuffing box because it will spin if we get the boat towed.

    Irv Grunes

    Isle of Wight #851

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