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2836 rotor for 7750

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    2836 rotor for 7750

    Hallo members,

    I'd like to swap rotor on an ARF V2 116520.

    I saw that 7750 rotor is part 1143/1: I have a spare 2836 rotor and screw and I saw that the part number is the same.

    May I use the 2836 rotor instead?

    Thank you

    #2
    I have never tested but i doubt the 2836 rotor will fit on the 7750.


    Skickat från min iPhone med Tapatalk

    Comment


      #3
      Thank you Kryckan13, I asked since I saw the part number

      Comment


        #4
        You can try it and report back, but I didn't think they were interchangeable.
        My wish list: gen components...
        Breitling Datora Montibrilliant dial, older style

        Breitling B13 date wheel


        Panerai OP VIII movement



        Comment


          #5
          Originally posted by Rx4Time View Post
          You can try it and report back, but I didn't think they were interchangeable.
          I will try, my only fear is having problems with the movement after removing the deco plates.
          If the tabs can clamp the movement in the case I can easily try to swap rotor, my concern is that the movement could be shaky in the case since the missing thickness of the deco plates.

          Comment


            #6
            May I ask why you wish to install this rotor?
            My wish list: gen components...
            Breitling Datora Montibrilliant dial, older style

            Breitling B13 date wheel


            Panerai OP VIII movement



            Comment


              #7
              The one on the ARF V2 is a little noisy, I tried to oil it, it's better but not perfect - anyway, great watch, it's only a minor thing that none notice using it.

              Winding the watch manually it has 48 hours power reserve.

              I'd like to use the 7750 rotor in order to have a better automatic winding as well as a gen-like thickness with another slimmer case back.

              Comment


                #8
                This will not achieve your goals. Even the ET 7750 is not silent like a genuine Rolex. The 7750 is unidirectional wind so by design the rotor will free spin and be audible. I have multiple 7750 watches, genuine and replica, and all are audible. As far as thickness, unless you are going to have the case machined down, swapping the rotor will not affect this.
                My wish list: gen components...
                Breitling Datora Montibrilliant dial, older style

                Breitling B13 date wheel


                Panerai OP VIII movement



                Comment


                  #9
                  Agree with Rx4Time,...my gen 7750's as well as my A7750 make some noise, I really don't notice it when greased

                  Comment


                    #10
                    Thank you for the advices!

                    I understood that swapping rotor and using a slimmer case back it was possible to have a watch with good power reserve and gen-like thickness.
                    At this point I leave it as is...

                    Since you have several 7750 I have another question: it is normal that the watch is very very precise (less then 1 second per day), but when I set the hour after some day I don't use it, even if manually winded, for the first minute, the minute's hand does not run, then goes perfectly?

                    Thank you

                    Comment


                      #11
                      I have the same watch and swapped out the rotor. The ARF rotor is too light/thin due to the deco plate (needs to be thinner to make room for that deco plate). As a result it's too light to auto wind properly so swapping out the rotor with the heavier one def will help. Also I thinking greasing your new rotor helps quiet it down a bit too.
                      I ordered the 1143/3 so not sure if the other rotor will fit...just try...not that hard. If doesnt fit, order the other one. Only a fee bucks.
                      I also got the Noob backcase but it didn't work. It touching the rotor so it'll need to be machined down...which I haven't gotten to

                      Which back case will work without maching?

                      Comment


                        #12
                        Originally posted by Matt5513 View Post
                        Thank you for the advices!

                        I understood that swapping rotor and using a slimmer case back it was possible to have a watch with good power reserve and gen-like thickness.
                        At this point I leave it as is...

                        Since you have several 7750 I have another question: it is normal that the watch is very very precise (less then 1 second per day), but when I set the hour after some day I don't use it, even if manually winded, for the first minute, the minute's hand does not run, then goes perfectly?

                        Thank you
                        I have this on some of my Asian clone 7750. I've found that if you turn the crown to back the hand up a couple of minutes it'll not stay dormant for the first minute after setting. Takes a little bit to get used to, but after a few tries you'll get it to cooperate. Not sure exactly why this occurs, but I've experienced it on more then one. not recommended, but you can always remove the rotor and it will run silent. You have essentially created a manual winding watch then, but an option I seen a couple of members elect. I personally wouldn't do it as you are putting unnecessary wear on the movement and crown.



                        My wish list: gen components...
                        Breitling Datora Montibrilliant dial, older style

                        Breitling B13 date wheel


                        Panerai OP VIII movement



                        Comment


                          #13
                          Originally posted by Matt5513 View Post
                          Since you have several 7750 I have another question: it is normal that the watch is very very precise (less then 1 second per day), but when I set the hour after some day I don't use it, even if manually winded, for the first minute, the minute's hand does not run, then goes perfectly?
                          this is because the 7750 has an offset canon pinion , it is not direct drive with the rest of the gear train so the additional gears create some backlash , resulting in what you are noticing , setting the time foreward past the correct time , then backwards to the correct time should reduce this "lag"

                          Comment


                            #14
                            Originally posted by rolexlover101 View Post

                            Which back case will work without maching?
                            I heard that JF or 2824 Daytona caseback will work, but never tried.

                            Comment


                              #15
                              Originally posted by Raddave View Post
                              this is because the 7750 has an offset canon pinion , it is not direct drive with the rest of the gear train so the additional gears create some backlash , resulting in what you are noticing , setting the time foreward past the correct time , then backwards to the correct time should reduce this "lag"
                              Thank you!!

                              Comment

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