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78mm Clutch on RC Engine

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  • 78mm Clutch on RC Engine

    Planning on slapping a 78mm on my G240RC and making a special BILLET adapter plate to mount the RC engine onto the 78mm mount so I can use my Tensionator

    What clutches have others used for this mod?

    Thoughts? Ideas? Suggestions? Comments?

    Peace and ppp

  • #2
    A 78mm clutch won't fit an RC crank. You'd need a custom clutch plate and housing.
    Lookin for a new goat...mine is wore the hell out!

    Originally posted by Dirtmonkey
    Slitz is taken. We'll let you be Clitz.

    Comment


    • #3
      Originally posted by cablescum View Post
      A 78mm clutch won't fit an RC crank. You'd need a custom clutch plate and housing.
      Righton...guess I need to scrape up some specs

      Comment


      • #4
        Seems like it would need to be a pretty torquey R/C motor to spin that additional clutch mass.
        Originally posted by rocketped
        Damn Texan

        Comment


        • #5
          Originally posted by depog revilo View Post
          Seems like it would need to be a pretty torquey R/C motor to spin that additional clutch mass.
          Only at the very moment of starting the engine and the split seconds the larger surface engaged with the bell drum, in all other conditions the springs can be engaging in a wider range adjustable by spring tension as the bit of more mass and the more outwards position with increased centripedial forces is making for an actual advantage as compared to 54mm setups.

          Comment


          • #6
            anyone have Zenoah RC (G240RC) and G43l-D crank specs?

            I have both here but I misplaced my digital calipers

            Comment


            • #7
              Originally posted by depog revilo View Post
              Seems like it would need to be a pretty torquey R/C motor to spin that additional clutch mass.
              ^^^+1... Aluminum clutches, lightened flywheel could help counteract this.
              Lookin for a new goat...mine is wore the hell out!

              Originally posted by Dirtmonkey
              Slitz is taken. We'll let you be Clitz.

              Comment


              • #8
                Originally posted by cablescum View Post
                ^^^+1... Aluminum clutches, lightened flywheel could help counteract this.
                +1, Also if available replace any rotating nuts/bolts with titanium hardware.

                Comment


                • #9
                  Making the fluwheel kighter and reducing the rotational mass helps the engie to rev up faster and likely higher in total since the farther-out weight distribution and increased surface of the clutch should reduce vibrations better.

                  This applies for the physical reality as prospected in my above post and is also in line with what the followers in the miisbelieve that rotational mass weight increase by like 7g matters can believe ?

                  Comment


                  • #10
                    Is there a way to put a 78mm clutch on a rc 54mm clutch engine? My rc has way to much power for the 54mm clutch so im wondering what it would take to pt a 78mm on?

                    Comment


                    • #11
                      Originally posted by HollyWoodFan View Post
                      Is there a way to put a 78mm clutch on a rc 54mm clutch engine? My rc has way to much power for the 54mm clutch so im wondering what it would take to pt a 78mm on?
                      Yes, how custom do you want to go?

                      My old BoXeR gcb gsrs xped. had 80mm clutch on it.

                      That's all that's out there now is make custom mount, or gotta wait to see how the new clutch cases come out.
                      DSC01640.jpg
                      My Constitutional Rights Don't End Where Your Feelings Begin

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                      • #12
                        Originally posted by pedguyman View Post
                        My old BoXeR gcb gsrs xped. had 80mm clutch on it.

                        That's all that's out there now is make custom mount, or gotta wait to see how the new clutch cases come out.
                        What "new clutch cases" are you talking about? Is someone or a manufacturer working on new clutch cases, or a 54>78 conversion kit?
                        CP......
                        HOW we ride today, may determine IF we can ride tomorrow

                        Comment


                        • #13
                          Originally posted by SJ View Post
                          What "new clutch cases" are you talking about? Is someone or a manufacturer working on new clutch cases, or a 54>78 conversion kit?
                          Read the first post, thread is about RC adapted to 78mm clutch/mount. Also believe was talked about at PedFest.
                          My Constitutional Rights Don't End Where Your Feelings Begin

                          Comment


                          • #14
                            Originally posted by pedguyman View Post
                            Read the first post, thread is about RC adapted to 78mm clutch/mount. Also believe was talked about at PedFest.
                            I can read Larry. I was asking about the statement that you made, and I was not at PedFest. So I was not privy to whatever may have been talked about there. Is this a big secret?
                            CP......
                            HOW we ride today, may determine IF we can ride tomorrow

                            Comment


                            • #15
                              Originally posted by SJ View Post
                              I can read Larry. I was asking about the statement that you made, and I was not at PedFest. So I was not privy to whatever may have been talked about there. Is this a big secret?
                              The statement "I" made was about post #1.

                              "Planning on slapping a 78mm on my G240RC and making a special BILLET adapter plate to mount the RC engine onto the 78mm mount"

                              Adapter plate is called a "clutch case", the case around the clutch. He could do a plate with 4 spacers to bolt to engine.
                              Last edited by pedguyman; 11-18-2013, 11:21 AM.
                              My Constitutional Rights Don't End Where Your Feelings Begin

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