Home Forum Ask A Member 1953 Evinrude FastTwin 15hp

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  • #71387
    Mumbles
    Participant

      I’ve had an eighteen horse driveshaft break where it is drilled for the drive pin but have never seen a sheared pin, yet. 😕

      #71389
      vintin
      Participant

        I’ve not heard that the pin is prone to failure. Wonder how much a key slot weakens the drive shaft Vs a hole? In the service manual for the 1974 Evinrude 40hp, a motor based on the older RD series….it says to position the water impeller keyway pointing towards the prop while the top piston is at TDC to avoid driveshaft breakage. I don’t understand the logic….just reporting it. Doesn’t seem it would make any difference to me but the advice could be based on previous failures.

        #71392
        labrador-guy
        Participant

          US Member

          Here is my 15 Evinrude! Still my favorite! Just a sweet running machine and I do run it and try to keep it clean. One thing I always wondered is why OMC decided to abandon the automatic reverse lock in ’55? They also went to the five bolt lower unit. I also have two 18’s and there is not much difference in speed. Get the right prop and that 15 will scoot right along!

          dale


          Attachments:

          #71395
          frankr
          Participant

            US Member

            OMC drove their impellers with a round pin for many, many years, with no problem. But I have never seen one with a roll pin. Should be a stainless steel pin.

            That thing of aligning the key with the piston makes no sense at all to me. Yeah, I’m aware of the bulletin, but it still makes no sense.

            #71396
            garry-in-michigan
            Participant

              Lifetime Member

              All the warrantee motors they got with driveshafts broken at the water pump also had damage to the gear case indicating it hit something knocking it out of allignment. The worst damage seemed to be backing into a rock when launching the boat from a trailer with the motor down. . . 🙄

              #71399
              david-bartlett
              Participant
                quote Bob D:

                Dave, do you remember the Duplicolor number?

                Bob,

                Although not a real match, this is what I used.


                Attachments:

                #71403
                bob-d
                Participant

                  US Member

                  Thanks Dave

                  #71414
                  Monte NZ
                  Participant

                    International Member

                    Lovely motor.
                    Brings back happy memories of my first go at water skiing in 1954……oh how time flies!

                    MonteNZ

                    #286988
                    jeff-register
                    Participant

                      US Member - 2 Years

                      Garry,

                      Thank you for the photos!! It’s been a few years from we have seen your Dad Chap! I like the photo of all the props to test in the station wagon. Please post that one.

                      Yes I enhoyed my Fastwin too, the best designed 1954 on the block!!

                      Jeff

                      #286989
                      crosbyman
                      Participant

                        Canada Member - 2 Years

                        6 years later ???

                        Joining AOMCI has priviledges 🙂

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