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Motor shaft length?

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  • Motor shaft length?

    Not sure what size engine shaft I need for my 14ft McKee. Might sounds stupid, but I heard people put both on the boat- It can run with a 15" or a 20".

    Any input on this guys? I heard longer shafts can increase drag and overall performance of the boat will decrease. Any chance you guys can help me out?

  • #2
    Re: Motor shaft length?

    Originally posted by DocTide View Post
    Not sure what size engine shaft I need for my 14ft McKee. Might sounds stupid, but I heard people put both on the boat- It can run with a 15" or a 20".

    Any input on this guys? I heard longer shafts can increase drag and overall performance of the boat will decrease. Any chance you guys can help me out?
    What's the measurement from the top of the center of the transom (where the outboard would mount) to the keel?
    1976 Rogers Custom Boats 18' "Bonneville" W/ Chevy 454/ Berkeley 12JC

    Care Taker of 1976 Glastron V-184 Crestflight W/ Volvo 170B/280 I.O.
    & 1969 Starcraft W/ 1956 Evinrude 7.5hp Fleetwin.

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    • #3
      Re: Motor shaft length?

      Click image for larger version

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      Measurement "B" is the height of the transom.
      Boatless

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      • #4
        Re: Motor shaft length?

        Does the 14 have a tunnel hull like the 17?
        EdgeWater 205 EX
        Yamaha 150
        2012 Dodge Hemi

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        • #5
          Re: Motor shaft length?

          Ill have to go and measure that when I get home. Pardon my ignorance, but Im not sure if it has a tunnel hull. Mine looks a lot like the pic that ColonialRovers posted, but with the sides much deeper into the water. Somewhat of a "M" shape to it. Ill go measure that transom to keel distance when ASAP!

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          • #6
            Re: Motor shaft length?

            Transom height is 18in for measurement "B". What would be a good shaft size? Id like to avoid drag and get the best performance out of it.

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            • #7
              Re: Motor shaft length?

              here is the link to the same question I posted on the hulltruth, this has pictures.

              Thanks

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              • #8
                Re: Motor shaft length?

                Here is what I posted on thehulltruth it has pictures. http://www.thehulltruth.com/boating-...ngth-boat.html
                Thanks

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                • #9
                  Re: Motor shaft length?

                  From what I understand the shaft length might be useable on many boats, however in rough or choppy water the short-shaft will lose effectiveness. The power delivery is lost due to cavitation.
                  1987 Boston Whaler 18.6 Outrage with Merc 150 and Honda 8.

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                  • #10
                    Re: Motor shaft length?

                    Originally posted by gus-gus View Post
                    From what I understand the shaft length might be useable on many boats, however in rough or choppy water the short-shaft will lose effectiveness. The power delivery is lost due to cavitation.
                    Old thread chief...
                    1976 Rogers Custom Boats 18' "Bonneville" W/ Chevy 454/ Berkeley 12JC

                    Care Taker of 1976 Glastron V-184 Crestflight W/ Volvo 170B/280 I.O.
                    & 1969 Starcraft W/ 1956 Evinrude 7.5hp Fleetwin.

                    Comment


                    • #11
                      Re: Motor shaft length?

                      Originally posted by RogersJetboat454 View Post
                      Old thread chief...
                      I knew that, tonto.
                      1987 Boston Whaler 18.6 Outrage with Merc 150 and Honda 8.

                      Comment


                      • #12
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                        Re: Motor shaft length?

                        Sadly, the entire McKee Craft section is dead here!

                        Originally posted by RogersJetboat454 View Post
                        Old thread chief...
                        EdgeWater 205 EX
                        Yamaha 150
                        2012 Dodge Hemi

                        Comment

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