'82/'83 1100e gearing

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  • Rob S.
    Forum Guru
    Past Site Supporter
    • Dec 2013
    • 9393
    • New York City

    #1

    '82/'83 1100e gearing

    My '82 spins about 4.6/4.7k at indicated 70 mph. 40-tooth rear sprocket with 630 chain.

    I'm curious to know what other 1100EZ/EDs are revving.
    Last edited by Rob S.; 06-05-2014, 02:48 PM.
    1982 GS1100E V&H "SS" exhaust, APE pods, 1150 oil cooler, 140 speedo, 99.3 rear wheel HP, black engine, '83 red

    2016 XL883L sigpic Two-tone blue and white. Almost 42 hp! Status: destroyed, now owned by the insurance company. The hole in my memory starts an hour before the accident and ends 24 hours after.
  • rapidray
    Forum Guru
    GSResource Superstar
    • Oct 2006
    • 8195
    • So Cal

    #2
    How do you get a GS1100 motor all the way to 46,000 RPM????
    Ray.

    Comment

    • Guest

      #3
      Originally posted by rapidray
      How do you get a GS1100 motor all the way to 46,000 RPM????
      Ray.
      Ha, I was thinking the same thing! I think it will only do it once.

      Comment

      • yank
        Forum Mentor
        Past Site Supporter
        • Oct 2006
        • 771
        • Tallapoosa,Ga

        #4
        Must be the 630 chain.
        81 gs 1100 E One owner,Me.

        Comment

        • Guest

          #5
          Originally posted by Rob S.
          My '82 spins about 46/47k at indicated 70 mph. 40-tooth rear sprocket with 630 chain.

          I'm curious to know what other 1100EZ/EDs are revving.
          If I remember correctly, my '81 1100 runs a little over 4K at 70mph with a 50T rear & 18T front, 530 chain.

          Comment

          • Rob S.
            Forum Guru
            Past Site Supporter
            • Dec 2013
            • 9393
            • New York City

            #6
            Yes, I made a typo.

            But let's see...four answers, one is serious, the other three are snide comments. On this site? How shocking! "Surprise, surprise!" as Gomer Pyle would have said.
            1982 GS1100E V&H "SS" exhaust, APE pods, 1150 oil cooler, 140 speedo, 99.3 rear wheel HP, black engine, '83 red

            2016 XL883L sigpic Two-tone blue and white. Almost 42 hp! Status: destroyed, now owned by the insurance company. The hole in my memory starts an hour before the accident and ends 24 hours after.

            Comment

            • Griffin
              Forum LongTimer
              Past Site Supporter
              • Sep 2003
              • 14205
              • Danville, IN

              #7
              Stock sprockets are 15 teeth up front and 42 teeth in the rear. At 70mph with oem-sized tires your engine will be spinning at 4450 rpm in 5th gear.
              GS450E GS650E GS700ES GS1000E GS1000G GS1100G GS1100E
              KZ550A KZ700A GPZ750
              CB400T CB900F
              XJ750R

              Comment

              • Griffin
                Forum LongTimer
                Past Site Supporter
                • Sep 2003
                • 14205
                • Danville, IN

                #8
                Originally posted by Griffin
                Stock sprockets are 15 teeth up front and 42 teeth in the rear. At 70mph with oem-sized tires your engine will be spinning at 4450 rpm in 5th gear.
                To elaborate, if you still have a 15 tooth sprocket up front, the 40 tooth on the rear gives you 4673 rpm at 70mph.
                GS450E GS650E GS700ES GS1000E GS1000G GS1100G GS1100E
                KZ550A KZ700A GPZ750
                CB400T CB900F
                XJ750R

                Comment

                • Rob S.
                  Forum Guru
                  Past Site Supporter
                  • Dec 2013
                  • 9393
                  • New York City

                  #9
                  The way my ten-speed works, smaller in the back equals less rpms for my engine (feet).

                  I can't see why my motorcycle would be any different.
                  1982 GS1100E V&H "SS" exhaust, APE pods, 1150 oil cooler, 140 speedo, 99.3 rear wheel HP, black engine, '83 red

                  2016 XL883L sigpic Two-tone blue and white. Almost 42 hp! Status: destroyed, now owned by the insurance company. The hole in my memory starts an hour before the accident and ends 24 hours after.

                  Comment

                  • Griffin
                    Forum LongTimer
                    Past Site Supporter
                    • Sep 2003
                    • 14205
                    • Danville, IN

                    #10
                    Originally posted by Rob S.
                    The way my ten-speed works, smaller in the back equals less rpms for my engine (feet).

                    I can't see why my motorcycle would be any different.

                    You're right, I did the math backwards. 15/40 comes out to 4238 rpm at 70mph.

                    How many teeth on your front sprocket?
                    GS450E GS650E GS700ES GS1000E GS1000G GS1100G GS1100E
                    KZ550A KZ700A GPZ750
                    CB400T CB900F
                    XJ750R

                    Comment

                    • gs1100ez

                      #11
                      around 5k at 80mph
                      stock gearing

                      just changed to 530 chain
                      15/50
                      seems to be the same

                      Comment

                      • blowerbike
                        Forum Guru
                        GSResource Superstar
                        • Aug 2008
                        • 7057
                        • Ohio Closer to KY Than Cleveland

                        #12
                        15/50 huh>
                        what>?
                        thats 1/4 mile stuff unless 530 changes it that much.
                        you would spend you day shifting or umm revving really hard.
                        someone splain plez?

                        Comment

                        • Nessism
                          Forum LongTimer
                          GSResource Superstar
                          Past Site Supporter
                          Super Site Supporter
                          • Mar 2006
                          • 35790
                          • Torrance, CA

                          #13
                          50/15 = 3.4 = crazy high rpm for street bike
                          Ed

                          To measure is to know.

                          Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

                          Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

                          Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

                          KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

                          Comment

                          • Guest

                            #14
                            Originally posted by gs1100ez
                            around 5k at 80mph
                            stock gearing

                            just changed to 530 chain
                            15/50
                            seems to be the same
                            15/50 is a huge jump from stock, 19% lower. Unless you have something wrong in your numbers there is no way that would seem to be the same. If you ran 4500rpm before you would now be running 5355rpm at the same speed.


                            Originally posted by blowerbike
                            unless 530 changes it that much.
                            The chain size has nothing to do with it, the drive reduction is only based on the number of teeth on each sprocket.


                            Mark

                            Comment

                            • Rob S.
                              Forum Guru
                              Past Site Supporter
                              • Dec 2013
                              • 9393
                              • New York City

                              #15
                              Originally posted by Griffin

                              How many teeth on your front sprocket?
                              That's the big question. (I don't know.) A lot easier to count the teeth on the rear sprocket.
                              1982 GS1100E V&H "SS" exhaust, APE pods, 1150 oil cooler, 140 speedo, 99.3 rear wheel HP, black engine, '83 red

                              2016 XL883L sigpic Two-tone blue and white. Almost 42 hp! Status: destroyed, now owned by the insurance company. The hole in my memory starts an hour before the accident and ends 24 hours after.

                              Comment

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