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  • #586
    Originally posted by liionheart View Post
    Just one confusion ..Does not change of gear(sprocket, chain etc should have same gear module rather than same pitch??

    May be i am missing something(please enlighten..) but as far as my engg. knowledge is concerned for changing gears Module no.(m= no. of teethes/diameter of gear) needs to be same for correct meshing of gear or chain etc.

    Anyone?? Please remove my confusion.
    See, the chain pitch remaining same is necessary, as it is the distance between:

    1. the 2 continuous links of the chain,
    2. the 2 continuous teeth of the sprocket, (both these values are equal for a chain sprocket kit)

    I've written an entire post on Chain pitch on the first page: http://www.xbhp.com/talkies/146755-post8.html

    Remember, the chain is "laid down" on the sprocket. The Chain pitch must REMAIN THE SAME even if the sprocket changes to another one, otherwise the chain won't fit on the sprocket at all...


    As for your formula, of Module no.(m= no. of teethes/diameter of gear), it must be for something else.
    And no, gears module number can't be used here. That's because adding or reducing even one teeth extra will change this ratio, but the sprockets could be the same chain pitch and compatible too.
    ---
    Brotherhood, Rules, Freedom. Xbhp.
    Indian riding = Alertness, Anticipation and Adjustment.

    Comment

    • #587
      Originally posted by Samarth 619 View Post
      Apart from the ECU, as suggested by Anant bro, sprockets can also be changed to overgear the Duke. Duke 200's setup: 14/43 on .520 chain pitch.

      Try fitting one of the following rear sprockets:

      1. Karizma's rear sprocket, 40 teeth,
      2. Pulsar 180 UG4's rear sprocket, 39 teeth,
      3. The very first Pulsar 200 DTSi's sprocket: 38 teeth,

      I'm not too sure if these will help you achieve 150 kmph exact, but they should definitely help in a better top speed, if the road is good enough. And with these sprockets, you might lose a little acceleration.
      Thank you for the prompt reply.i have few questions.
      1.Will overgearing to 38/39/40 sprocket increase stress on engine?
      2.warranty issues???
      Motorcycling heals, big time...

      Comment

      • #588
        Can anybody explain why do we need to change the sprocket after chain get tighten several times.?

        when chain get loose, mechanic pull the sprocket slightly towards rear by loosing the rear sprocket to tighten the chain. but after tightening chain for several times, chain cannot be tighten beyond the limit and we have to replace the sprocket to tight the chain.

        Please explain the logic. Ideally if chain is getting loose and cannot be tighten after some limit, we suppose to change the chain. but we change the sprocket. whats the science behind it.
        sigpic
        Thanks and Regards,
        RP
        Location: Mumbai (India)
        Rides: BAJAJ Pulsar 220F (Silver)
        Mail-to: [email protected]

        Comment

        • #589
          Originally posted by patilrahuld View Post
          Can anybody explain why do we need to change the sprocket after chain get tighten several times.?

          when chain get loose, mechanic pull the sprocket slightly towards rear by loosing the rear sprocket to tighten the chain. but after tightening chain for several times, chain cannot be tighten beyond the limit and we have to replace the sprocket to tight the chain.

          Please explain the logic. Ideally if chain is getting loose and cannot be tighten after some limit, we suppose to change the chain. but we change the sprocket. whats the science behind it.
          well, we change the whole set because of (mostly) 3 reasons:
          1st, not only chain but sprockets wear out too.. wear can be increase in gap between teeth (pitch) and/or thinning of sprocket teeth.
          2nd, changing only chain or sprockets with worn or partly worn part (chain or sprocket) will cause accelerated wear to the newer thing (chain or sprocket)
          3rd, rear sprocket and chain is only available as set not alone.
          Edit: when chain adjuster is at its maximum (full tight or the rear most position) and still chain is loose then one can have few links removed to tighten the chain, but dont depend on this for long.
          Last edited by Honda_CBF; 06-26-2012, 10:49 AM.
          http://www.facebook.com/ateesh.kumar

          Comment

          • #590
            i have p135ls and i want to increase my cruising speed and top speed, currently my top speed 110km/h. stock sprocket 15t/43t (front and rear) and my rear tire size was 100/80.
            Last edited by mr.chikito; 06-28-2012, 02:23 PM.

            Comment

            • #591
              Originally posted by ynike99 View Post
              Thank you for the prompt reply.i have few questions.
              1.Will overgearing to 38/39/40 sprocket increase stress on engine?
              2.warranty issues???
              1. No, not really. Gearing is also a choice that the company makes while doing R&D. For example, they undergeared a bike called Duke 200 so that it can become a city hit!
              2. Warranty shouldn't be a problem, unless bad installation of the chain sprockets caused the issues.


              Originally posted by mr.chikito View Post
              i have p135ls and i want to increase my cruising speed and top speed, currently my top speed 110km/h. stock sprocket 15t/43t (front and rear) and my rear tire size was 100/80.
              Well, it could be the same 15/43 used in P180 UG3.
              Try P220's entire chain sprocket setup (14/37)... It may or may NOT fit, try at your own expense.

              And also, you may have to cut 2-4 links from the chain, or tighten the chain to maximum, until it loosens 5,000-10,000 kms later.
              ---
              Brotherhood, Rules, Freedom. Xbhp.
              Indian riding = Alertness, Anticipation and Adjustment.

              Comment

              • #592
                Originally posted by ynike99 View Post
                hi all,
                i own a duke 200 and want to increase the top end to reach about 150.

                Then You need to Contact xBhp.com : The Global Indian Biking Community - View Profile: navnish ,
                He might help you in KTM After markets ,

                he was working on KTM Sprockets ,

                Comment

                • #593
                  Hero honda splendor

                  How to increase initial torque and power in splendor?Which Sprocket I must use?
                  "Vibes transmitted from crank shaft to frame, then through the bearings of the head stock and into the stem where it meets the triple clamp and into the clip-ons where it is greeted with great pleasure by my hands"-ratfighter mod rtr

                  Comment

                  • #594
                    fz stock sprocket front 14t rear 40t with 128 links

                    fz 15t with 40t with 130 links (for top speed)

                    fz 13t with 40t with 128links (for aggressive pick up)

                    Comment

                    • #595
                      want to increase performance of pulsar 200

                      friends my one friend own pulsar220f can you help he want to increase top speed.

                      Comment

                      • #596
                        Hi guys,

                        I had experimented with 38T sprocket of Ambition into my Unicorn and that had drastically improved the top speed, however, it was a huge compromise on low-end pickup. Now I am back to the stock sprocket of 43T rear, but I am itching to experiment again with 40T sprocket which I think would be a better balance between low-end pickup and the higher speeds in each gear.

                        I am not sure which 40T sprocket is a direct fit for Unicorn. Can someone point me to it pls? Mine is a 3rd Gen Unicorn with a stock 15T/43T setup.

                        Prajwal
                        www.youtube.com/user/prajwalkashyap

                        Comment

                        • #597
                          Originally posted by prajwalkashyap View Post
                          Hi guys,

                          I had experimented with 38T sprocket of Ambition into my Unicorn and that had drastically improved the top speed, however, it was a huge compromise on low-end pickup. Now I am back to the stock sprocket of 43T rear, but I am itching to experiment again with 40T sprocket which I think would be a better balance between low-end pickup and the higher speeds in each gear.

                          I am not sure which 40T sprocket is a direct fit for Unicorn. Can someone point me to it pls? Mine is a 3rd Gen Unicorn with a stock 15T/43T setup.

                          Prajwal
                          40T will increase your top speed by around 5kmph i guess and yes it will be better option. Try FZ's or LML freedom's 40T sprocket.
                          Last edited by Honda_CBF; 08-03-2012, 10:17 PM.
                          http://www.facebook.com/ateesh.kumar

                          Comment

                          • #598
                            Originally posted by theironhorse99 View Post
                            any help on sprockets for the cbr 250.

                            i believe that 150 should have lesser teeth in the rear sprocket.

                            any help guys.

                            need a teeth more in front or 1 lesser in rear.

                            planning for a trip so looking forward to cruise at lower rpm. single rider no pillion so a lil accleration loss is fine.

                            folks any help on this one ????
                            "A good long ride can clear your mind, restore your faith, and use up a lot of fuel."

                            RE Bullet 1977 - Current
                            RX-100 1995 - Current
                            CBZ Classic 2003 - Current
                            Activa 2004 - Current
                            CBR 250R 2012 - Current
                            Ninja 650 2013 - Current.

                            Comment

                            • #599
                              Cbr250's 6th gear is already so tall that it can't be redlined and bike can do 120kmph all day without any strain, so overgearing it, is not so needed.
                              If still you want to overgearing it then kindly provide the details like sprocket sizes in teeth, chain spec, fitment holes of rear sprocket.
                              http://www.facebook.com/ateesh.kumar

                              Comment

                              • #600
                                Originally posted by Honda_CBF View Post
                                40T will increase your top speed by around 5kmph i guess and yes it will be better option. Try FZ's or LML freedom's 40T sprocket.
                                The rear sprocket of the FZ16 has 6 mount holes compared to Unicorn's 4. Therefore, that would not be suitable.

                                I am not sure of LML Freedom's sprocket though. Need to check that.


                                Prajwal
                                www.youtube.com/user/prajwalkashyap

                                Comment

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