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shafts

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  • 15 August 2011 at 19:37 #31566
    ian jackson 2
    Participant
      @ianjackson2
      picked up a deans destroyer [part built – problem is prop shafts are installed with oiler tubes at bottom end of hull, just in side and around waterline – problem is if i extend oilerv tubes to above water line will lube reach top of shaft at motor end – or do i rip them out and correct it properly – lots of work at motors etc all in place as well
       
      cheers
      ian
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      15 August 2011 at 19:37 #2066
      ian jackson 2
      Participant
        @ianjackson2

        reversed shafts

        15 August 2011 at 20:34 #31567
        Colin Bishop
        Moderator
          @colinbishop34627
          Weird! Are the propellors mounted at the inboard end?!
           
          Oiler tubes are not essential, just a convenience. Maybe you could just blank them off and lubricate by withdrawing the shafts every now and again.
           
          Colin
          16 August 2011 at 07:49 #31569
          ashley needham
          Participant
            @ashleyneedham69188
            ian. If you were to incline the boat whilst oiling the shafts then i would fully expect the top of the shaft to recieve lubrication when filling up !
             
            Moreover, if the tube extension were to stay above the top of the shaft (when the boat is horizontal) and oil were to remain in this tube at a level of the top of the shaft then this would also guarantee lube staying at the top.
             
            Dont bother with oil myself, just a few drips either end before sailing. I prefer nylon bearings as they are self-lubricated by the water gushing through..
             
            Ashley
             
             
            18 August 2011 at 02:32 #31579
            Mark Beard 1
            Participant
              @markbeard1

              Ashley, I see where you’re coming from with filling the riser tube with oil – the hydrostatic (or should that be oleostatic) pressure from the column of oil in the riser will force oil up the shaft tube. Only trouble is, unless the bottom bearing is sealed that same pressure will dump most of the oil out the prop end of the tube. Reading both your and Colin’s advice, if it were me I’d blank the oilers off and oil each end before and after sailing.

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