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World of Sprockets!

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  • #391
    Originally posted by driverace View Post
    Hey, this was a very nice and educating archive (like many on this forum! )

    Thanks for the information.

    I had two queries:

    1. I agree, with gearing, we are just choosing how to channel the power our engine is generating.
    but, then, by gearing - what component are we stressing more (than the usual/stock setup) ?

    My first check box is against engine:
    If we are overgearing ( aren't we stressing the engine - if we drive with styles identical to our stock-setup-riding-habit? )

    How about the chain-life with changed sprocket(s)?

    2. Long term benefits/problems or sprocketing?

    I already see, with overgearing - better mileages at same speeds (as before - but as it is achieved at lesser "rpm" of engine ).


    Thanks,

    Ace.


    taller gearing reduce stress n shorter gearing increases stress on engine as you go more faster speed engine will be more stressed
    so for me for highway i use taller gearing less stress on engine more mileage , btw i am 35 now so speed maniac in me is less now days some times it erupts when road is empty straight
    in collage days i use to rip rx100 to its fullest

    Comment

    • #392
      Problem After Sprocket Change

      I changed the front sprocket of my Stunner to a 15 teeth sprocket (stock was 14 teeth) since I wanted a higher top end.

      Since the change I am experiencing the tyre wobbling problem at lower rpms. I read somewhere on xbhp that this can happen after a tyre change or a sprocket change. Does anyone know the exact reason why this problem occurs after a sprocket change and is there any solution to this ?

      Thanks in advance!
      Signals which are timed for 50 Kmph are also timed for 100 Kmph :)

      Comment

      • #393
        Originally posted by cmahajan View Post
        I changed the front sprocket of my Stunner to a 15 teeth sprocket (stock was 14 teeth) since I wanted a higher top end.

        Since the change I am experiencing the tyre wobbling problem at lower rpms. I read somewhere on xbhp that this can happen after a tyre change or a sprocket change. Does anyone know the exact reason why this problem occurs after a sprocket change and is there any solution to this ?

        Thanks in advance!

        which rear sprocket u r having??

        btw stunner is very under geared bike with short throws compared with other
        Last edited by nileshtambe; 08-10-2011, 09:39 PM.

        Comment

        • #394
          here is good link to see n count sprocket teethes


          Sprockets For Motorcycles - Spark, Yamaha Rx-100, Motorcycle Sprocket and Bajaj M-80 old modal Supplier & Manufacturer

          Comment

          • #395
            Originally posted by nileshtambe View Post
            which rear sprocket u r having??
            The rear sprocket is stock. 42T if I am not wrong.
            Signals which are timed for 50 Kmph are also timed for 100 Kmph :)

            Comment

            • #396
              Originally posted by cmahajan View Post
              The rear sprocket is stock. 42T if I am not wrong.

              change it to 44 15-44 combination will be very nice

              mine rtr he 15-44 3k rpm 6 bhp 70 mileage
              4k rpm 7 bhp
              8.5k 15.2 bhp

              Comment

              • #397
                Originally posted by nileshtambe View Post
                change it to 44 15-44 combination will be very nice

                mine rtr he 15-44 3k rpm 6 bhp 70 mileage
                4k rpm 7 bhp
                8.5k 15.2 bhp
                Dude, if I change the rear sprocket to 44T then the advantage of higher top end will be lost. I had switched to a 15T front sprocket because I needed a better top end. Changing to a 44T rear is not an option.

                Also, a combination which works good for RTR may not work so well for Stunner as the RTR has a bigger engine.
                Last edited by cmahajan; 08-10-2011, 10:32 PM.
                Signals which are timed for 50 Kmph are also timed for 100 Kmph :)

                Comment

                • #398
                  Originally posted by cmahajan View Post
                  The rear sprocket is stock. 42T if I am not wrong.
                  stock setup is 14t front and 43t rear.
                  http://www.facebook.com/ateesh.kumar

                  Comment

                  • #399
                    Originally posted by Honda_CBF View Post
                    stock setup is 14t front and 43t rear.
                    That is correct.
                    Signals which are timed for 50 Kmph are also timed for 100 Kmph :)

                    Comment

                    • #400
                      Originally posted by cmahajan View Post
                      That is correct.



                      stock 43/14=3.071

                      43/15=2.866 -6.67 change

                      44/15=2.933 -4.49 change than original stock

                      u must be familiar with this
                      Calculating the sprocket drive ratio:

                      (Rear tooth count) / (front tooth count) = drive ratio


                      Calculating the percentage change in sprocket ratios:

                      ((new ratio / old Ratio) - 1) * 100 = change as a percentage.
                      NOTE: Positive percentages indicate higher gearing ratios, negative numbers mean lower gearing ratios

                      Comment

                      • #401
                        Originally posted by nileshtambe View Post
                        stock 43/14=3.071

                        43/15=2.866 -6.67 change

                        44/15=2.933 -4.49 change than original stock

                        u must be familiar with this
                        Calculating the sprocket drive ratio:

                        (Rear tooth count) / (front tooth count) = drive ratio


                        Calculating the percentage change in sprocket ratios:

                        ((new ratio / old Ratio) - 1) * 100 = change as a percentage.
                        NOTE: Positive percentages indicate higher gearing ratios, negative numbers mean lower gearing ratios
                        I am aware of all these calculations. Just wanted to know what the exact reason for the wobbling problem was and if there was any solution to it.
                        Signals which are timed for 50 Kmph are also timed for 100 Kmph :)

                        Comment

                        • #402
                          Hey guys own a 2011 ZMA-R. And am planning to increase initial torque. So what are my options.. Where can I source 42T's?? and can I effectively go above 42T?? And if yes, from where do I source it???
                          Motorcycling Experience:
                          2000 ~ 2017 Y2K Kinetic Zoom (Disposed at 15k)
                          2011 ~ 2015 Hero Honda Karizma R (Sold at 56.5k)
                          2013 ~ 2014 Bajaj Discover 100 4G (Sold at 16.5k)
                          2015 ~ 2017 TVS Wego (Totaled at 18k)
                          2015 - Bajaj Pulsar 220F (Currently 31k) < Garage Queen!
                          2017 - Bajaj CT100B (Currently 21k) < 'Golden Quadrilateral' Runner!

                          The Ride was Good, but Life is short, spend it Wisely!
                          Adios Comrades!
                          A.P. 2018

                          Comment

                          • #403
                            Originally posted by ashwinprakas View Post
                            Hey guys own a 2011 ZMA-R. And am planning to increase initial torque. So what are my options.. Where can I source 42T's?? and can I effectively go above 42T?? And if yes, from where do I source it???
                            For undergearing, You'll have to change the entire sprocket setup with another.

                            Your chain pitch is .520 and the only options you have (P220 and 200's sprockets) are all going to overgear your bike, not undergear it.

                            I'm making some experimental guesses. Just try them in a roadside mechanic before purchasing the expensive kits:

                            40/13= 3.076

                            46/14= 3.285 (undergearing)

                            Get the 46 teeth from CBZ Classic, if it fits,
                            Then, try the 14 teeth front sprocket from Ambition, CBZ, Xtreme, etc. whichever fits,

                            You might have to get a really long chain from some other bike and then adjust the chain tightness and you're done.

                            Tell me what happened, but its too difficult to undergear a karizma...
                            ---
                            Brotherhood, Rules, Freedom. Xbhp.
                            Indian riding = Alertness, Anticipation and Adjustment.

                            Comment

                            • #404
                              Originally posted by ashwinprakas View Post
                              Hey guys own a 2011 ZMA-R. And am planning to increase initial torque. So what are my options.. Where can I source 42T's?? and can I effectively go above 42T?? And if yes, from where do I source it???
                              Why would you want to increase the initial at all? I believe the Karizma has decent initial...

                              By undergearing it you will be affecting the cruising capabilities of that incredible machine adversely...

                              Take my advice, don't go for any sprocketing mods with the Karizma...
                              Signals which are timed for 50 Kmph are also timed for 100 Kmph :)

                              Comment

                              • #405
                                Can anyone please explain about pitch sizes?

                                Comment

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