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Little help

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  • Little help

    Because I confuse easily, I ask for your help. I want to increase the speed of the lift x 3. Change the gear pully x how much ?
    1988 26' cuddy
    1975 20' open
    16' Sandpiper
    14' Certified Fiberglass

  • #2
    You can use this to get your exact speed. Remember if you increase the gear size, you may need to increase the HP of the motor.

    https://www.blocklayer.com/pulley-belteng.aspx
    Last edited by Ship; 09-06-2021, 01:18 PM.
    Atlantic City, NJ
    1982 Cuddy, Rebuilt 351 .060 rings, Edelbrock carb

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    • #3
      Cool calculator!
      Steve
      1998 260 Mackinaw Sea Maxx 5.7 HO TBI 12' Klamath w/ 20hp Tohatsu EFI

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      • #4
        This is a boat lift motor that I have rigged with a davit to get the groceries to the second flood. So while it is built to raise 2000 + pounds , it is only lifting la couple of weeks worth of groceries.
        1988 26' cuddy
        1975 20' open
        16' Sandpiper
        14' Certified Fiberglass

        Comment


        • #5
          HP is not an issue then. Cool idea.
          Atlantic City, NJ
          1982 Cuddy, Rebuilt 351 .060 rings, Edelbrock carb

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          • #6
            That’s a neat idea.
            Mark
            1990 26’ open 351W Indmar
            1987 30’ Blackwatch twin 351W Crusaders (sold)

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            • #7
              Click image for larger version

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ID:	32837 It was a real pain, especially as we, Linda mostly, had to carry 30 plastic bags. Is quite a distance from the Jeep to the kitchen. I
              1988 26' cuddy
              1975 20' open
              16' Sandpiper
              14' Certified Fiberglass

              Comment


              • #8
                You could have built a trebuchet. They deliver the goods fast, and are a different way to catch your food.
                1987 26' Hardtop
                1996 20' Walkaround Cuddy

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                • #9
                  Originally posted by Deputyrpa View Post
                  You could have built a trebuchet. They deliver the goods fast, and are a different way to catch your food.
                  More details.
                  1988 26' cuddy
                  1975 20' open
                  16' Sandpiper
                  14' Certified Fiberglass

                  Comment


                  • #10
                    Click image for larger version  Name:	trebouchet.jpg Views:	0 Size:	29.6 KB ID:	32841
                    1987 26' Hardtop
                    1996 20' Walkaround Cuddy

                    Comment


                    • #11
                      Jerry, I can't see the path of the drive belt from the pictures, generally to increase speed of the drive belt doing the lifting you will want to decrease the size of the pulley doing the moving. So the first wheel being turned by the motor would be the biggest, then it would go to one much smaller which in turn would have another belt or rope that would then go up to the top pulley of either the same size or smaller yet.
                      Karen
                      Punxsutawney, Pennsylvania
                      1986 Shamrock H/T with RWC 330 hp PCM, dual hydraulic helm
                      1992 Mako 211CC w/Mercury Optimax 175
                      3 other smaller OB boats and a trusty old canoe...

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                      • #12
                        Bottom pulley is on the motor. Top pulley turns the gear wheel. I went from a 7" top pulley to a 2 1/2" pulley. Using Skips calculator, I believe the speed will be 3 x faster. If I want faster, I'll increase the size of the bottom pulley.
                        1988 26' cuddy
                        1975 20' open
                        16' Sandpiper
                        14' Certified Fiberglass

                        Comment


                        • #13
                          How about using a set of drill press pulleys, that way you can select/adjust the speed by moving the belt...
                          1986 26' HT w/5.7 PCM 330HP RWC

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                          • #14
                            That would allow you to lift a refrigerator or a letter depending on the need.
                            Atlantic City, NJ
                            1982 Cuddy, Rebuilt 351 .060 rings, Edelbrock carb

                            Comment


                            • #15
                              Good idea Chris.
                              1988 26' cuddy
                              1975 20' open
                              16' Sandpiper
                              14' Certified Fiberglass

                              Comment

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