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RX rebuild Using 3 Yamaha Variants

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  • Originally posted by arvindraju View Post
    Aagree you are Running Rich
    While, I think its set right, due to brown color, anyway, let me watch over for some more time before commenting anything concretely.
    Skill is what keeps you on a Motorcycle
    Awareness + Skill is what keeps you out of harm's way
    ATGATT + Awareness + Skill means you might Live To Ride another day

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    • 300

      Clocked 300 today just a little near to MMSC track, SIPCOT Irungattukotai to be precise; I felt much better today on the gear shifts & ride, though the "tak tak" sound keeps coming. initially I thought it was rear sprocket hitting the chain cover, but I'd do dismiss this thought because this noise is heard only when accelerating & cannot be heard when the throttle is closed. Now, which is the part that functions only when throttle is opened? I don't use oil pump either. The vibration of this noise also can be felt right under the left foot. I'm not sure what the sound is still!!!
      Skill is what keeps you on a Motorcycle
      Awareness + Skill is what keeps you out of harm's way
      ATGATT + Awareness + Skill means you might Live To Ride another day

      Comment


      • How is your gear shift? do you get false neutrals or is the gearshift hard? did you change the gearbox?
        1985 Yamaha RD350 HT
        1989 Ki-Honda 110
        1994 Suzuki Shogun
        1997 Yamaha RX135
        2008 Yamaha FZ
        Suzuki Supra Powerup
        IND-SUZUKI AX100
        Hero IMPULSE
        TVS NTORQ


        No Cams, No Valves, No Headaches.

        Comment


        • Thanks @Yamdoot
          Originally posted by yamdoot View Post
          How is your gear shift?
          Shifting up is good, smooth, shift down is little harder from 4-3 onwards; but 5-4 is good, but getting better, but still difficult.
          The thing is, at slow speeds, the gear pedal itself gets struck & its so hard that I sometimes have to stand on the gear pedal to shift down. But you see, sometime, anticipating things much earlier & shifting down is easier than slowing down completely & then shifting. Hope you got the point, or let me know to elaborate more better.

          Originally posted by yamdoot View Post
          do you get false neutrals or is the gearshift hard? did you change the gearbox?
          Pls help understand false neutral. I'm guessing this is the neutral between 3-2 which is actually not neutral; when pressed up, it goes to 3 or goes to 2 when one pressed down. Pls correct otherwise.

          Yes I did change the gearbox including every single washer.
          Last edited by aargee; 07-25-2010, 09:44 PM.
          Skill is what keeps you on a Motorcycle
          Awareness + Skill is what keeps you out of harm's way
          ATGATT + Awareness + Skill means you might Live To Ride another day

          Comment


          • there should be no neutral except between the 1st and 2nd gear. its possible the gearbox has local components. in which gear do you get the sound and does it dissappear /appear when the clutch is pulled?
            1985 Yamaha RD350 HT
            1989 Ki-Honda 110
            1994 Suzuki Shogun
            1997 Yamaha RX135
            2008 Yamaha FZ
            Suzuki Supra Powerup
            IND-SUZUKI AX100
            Hero IMPULSE
            TVS NTORQ


            No Cams, No Valves, No Headaches.

            Comment


            • Originally posted by yamdoot View Post
              there should be no neutral except between the 1st and 2nd gear. its possible the gearbox has local components. in which gear do you get the sound and does it dissappear /appear when the clutch is pulled?
              Err...my bad explanation.
              For the first few Kms, I don't hear any noise. But after few Kms (will note down reading tomorrow to precise) I start hearing this tak tak noise. Assume the rear sprocket is little oval on one of the edge & when this hits the chain guard, that's exactly the noise I hear. But I'm 100% sure there're no issues with sprockets as I haven't changed the sprockets, they're still the old 16-34. Clutch shift is smooth & vehicle take off from 1st & clutch releases are all smooth (butter smooth) as brand new vehicle. When this noise is heard there's no clutch engage or disengaged, its like cruising in 5th at 50 Kmph, not noticed, may be it appears at 5th & 40 or 4th & 40 too. Will detailed out tomorrow.

              Gear & local components? Like what? Could you elaborate? AFAIK, everything is genuine YMIS products. I've bought several items twice since I wasn't sure if the first purchase was genuine.

              The noise currently appears at 5th though I haven't noticed it in 4th yet. Will observe & post on this tomorrow.

              Any tips on hard gear shifts is appreciated.
              Last edited by aargee; 07-25-2010, 09:57 PM.
              Skill is what keeps you on a Motorcycle
              Awareness + Skill is what keeps you out of harm's way
              ATGATT + Awareness + Skill means you might Live To Ride another day

              Comment


              • Aargee the plug colour is not clear, the sorrounding of the plugg says rich the tip and electrode says slightlly lean, click some snaps today eve if you can, and somehow i didnt see this thread sorry for the late reply

                See this post http://www.xbhp.com/talkies/thumpers...tml#post351355 for reference afaik with stock cdi you cant run this rich anything closer to this colour is coool.
                "Engine tuning is not an exact science, but with some practice and patience you'll get comfortable with your skill and be able tune for any conditions mother nature throws at you"


                Still the Boss -- RX 135

                Comment


                • hard gearshifts are courtesy bad setting/worn out gear shifter shaft. It could also be because your clutch hasn't been adjusted properly.

                  False neutrals are common in the RX bikes. Mostly due to lighter shifting, bad placement of gear shift lever and too less/too much effort used while shifting.
                  83' RD350 HT
                  96' RXG
                  97' RXZ
                  91'RX100>09'RX165
                  2010' HH ZMR

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                  • click some snaps today eve if you can
                    Sure, I will; I've clocked about 350 till now & by the time I go home it should near around 400, so you'll get a better pic. Ok, one more thing, the spark plug will always be oily, don't know why & I'll not see a clean black color as what you've shown on your pic. Probably because I premix too much oil; my ratio on any normal day is 30% as compared to the current 40%. Hope this is fine.

                    Originally posted by atul_astro View Post
                    hard gearshifts are courtesy bad setting/worn out gear shifter shaft. It could also be because your clutch hasn't been adjusted properly.
                    Sir, I'm very very sure there're only few parts that are old ones (not even worn out), like the headlight & the bottom of front suspension. Rest everything is brand new including every single bolt & nut. So I'm taking that clutch hasn't been adjusted properly. Ok, let me give a glimse as how the clutch plates & friction plates were placed.



                    Consider the above pic from the parts catalogue that says how the plates are fixed. In the above pic it shows how the grooves are uniformly aligned to one specific position say on the top; however, on my Rx they are not placed uniform, means if one is up, other one is at 90 degree, other one 180, other one 270 & so on. The reason given was that, the oil flow will be better if the plates are fixed in criss-cross fashion instead of uniform alignment. Pls note the above pic is from Rx100, but I've 5 speed so 5 plates & 6 friction plates.

                    Originally posted by atul_astro View Post
                    False neutrals are common in the RX bikes. Mostly due to lighter shifting, bad placement of gear shift lever and too less/too much effort used while shifting.
                    I was about to tell this here; I'm not using the stock gear shift pedal & have customized; means, in stock position the front side is little higher than the rear; I've adjusted the gear pedals to be of equal height. Do you think that would be the problem?
                    Skill is what keeps you on a Motorcycle
                    Awareness + Skill is what keeps you out of harm's way
                    ATGATT + Awareness + Skill means you might Live To Ride another day

                    Comment


                    • You cant get that black coz that was running on 300 mains any where close to it is ok, your plug tip and electrode shouldnt be oilly it should be dry pls post a pic in eve.
                      "Engine tuning is not an exact science, but with some practice and patience you'll get comfortable with your skill and be able tune for any conditions mother nature throws at you"


                      Still the Boss -- RX 135

                      Comment


                      • have you checked maximum speed in each gear ?????????????

                        Comment


                        • Originally posted by aalop143 View Post
                          have you checked maximum speed in each gear ?????????????
                          Oh!!! Boy!!! you're now scaring me to death
                          I wouldn't do that, for sure, atleast upto 800 Kms!!!
                          Trust me, I haven't crossed 30 in 3rd, 45 in 4th & 50 in 5th so far.
                          C'mon Aalop, I feel like being with a newly wedded wide
                          Skill is what keeps you on a Motorcycle
                          Awareness + Skill is what keeps you out of harm's way
                          ATGATT + Awareness + Skill means you might Live To Ride another day

                          Comment


                          • ^ LOL ganesh. But one Question Why 800 kms? ANy specific Reason. Can you clarify what would be the speed of a stock RX on 5th running at 4.5K rpm? Forgive me for being a Village idiot, but i'm bound to think that it should be close to atleast 60 Kmph?
                            Sit Down, Shut Up and Hang on ....

                            FB :
                            Ragavan Venkatakrishnan

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                            • Originally posted by felix.ragav View Post
                              ^ LOL ganesh. But one Question Why 800 kms? ANy specific Reason. Can you clarify what would be the speed of a stock RX on 5th running at 4.5K rpm? Forgive me for being a Village idiot, but i'm bound to think that it should be close to atleast 60 Kmph?
                              Sorry Raghav, I don't have concrete answers to none of your question. But I rely on hearing the sound of the engine. Let me explain...

                              800 Kms is just a cushion number, it could be much before that too. Stock RX running at 4.5K RPM, Sorry I don't know how RX sounds at 4.5K. BUT, I know when the RX says, rip me or rest me. RX at 4.5K will be more than 60 Kmph at top gear.

                              I being an oldie, don't know the real use for tacho, all I do is from engine start, warming, shifting gears & cruising is just keep hearing the exhaust & engine noise & keep making decisions. Trust me, I don't look at the ODO for service too, I only check the pull, braking, squeaking noises, chain noises & decide whether a service is needed.

                              So to me, practically nothing works according to theory, but theoritically everything works in practice
                              Skill is what keeps you on a Motorcycle
                              Awareness + Skill is what keeps you out of harm's way
                              ATGATT + Awareness + Skill means you might Live To Ride another day

                              Comment


                              • Originally posted by aargee View Post
                                Oh!!! Boy!!! you're now scaring me to death
                                I wouldn't do that, for sure, atleast upto 800 Kms!!!
                                Trust me, I haven't crossed 30 in 3rd, 45 in 4th & 50 in 5th so far.
                                C'mon Aalop, I feel like being with a newly wedded wide
                                sorry i am in hurry to know about that because we convert 4s to 5s it dosent go beyound 60 in third gear top speed is fine pickup is great but only 3rd gear stretching problem that's why i asked u.

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