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Strange Gear Shift Problem in Unicorn Dazzler

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  • Strange Gear Shift Problem in Unicorn Dazzler

    Hi Everyone,

    I own a 5 months old (5 k kms covered) Honda Unicorn Dazzler. initially there was no problem whatsoever. but after 1st servicing, problems started while gearshifting.

    suppose I m riding at 60 km/hr at 5th gear. due to some obstacle I apply sudden brakes & speed drops to 4 - 5 km/hr. i quickly press the clutch as engine would stop otherwise. Then I shift the gears down (I want to reach 1st gear from the current 5th). but gear shifts only till 4th, after which it becomes totally free (as if there is no life in gear pedal). however i press hard, gears wont tend to come down.

    In the meantime, other vehicles r blowing their horns from behind while I m unable to get the bike in proper gear & move.

    As a quick rescue, I have to release the clutch slightly & a 'kut' sound comes from the gearbox after which the gears come alive once again & I finally succeed to reach 1st gear.

    I discussed the matter with SVC guys during my 2nd servicing but of no use. they said they made it ok but prob still persists. I have my 3rd servicing on 24th sept.

    Friends & fellow bikers... pls help!

  • #2
    Query approved
    Happiness is finding you have another Gear left....

    Join xBhp On

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    • #3
      Originally posted by Pinak-the stunner View Post
      Hi Everyone,

      I own a 5 months old (5 k kms covered) Honda Unicorn Dazzler. initially there was no problem whatsoever. but after 1st servicing, problems started while gearshifting.

      suppose I m riding at 60 km/hr at 5th gear. due to some obstacle I apply sudden brakes & speed drops to 4 - 5 km/hr. i quickly press the clutch as engine would stop otherwise. Then I shift the gears down (I want to reach 1st gear from the current 5th). but gear shifts only till 4th, after which it becomes totally free (as if there is no life in gear pedal). however i press hard, gears wont tend to come down.

      In the meantime, other vehicles r blowing their horns from behind while I m unable to get the bike in proper gear & move.

      As a quick rescue, I have to release the clutch slightly & a 'kut' sound comes from the gearbox after which the gears come alive once again & I finally succeed to reach 1st gear.

      I discussed the matter with SVC guys during my 2nd servicing but of no use. they said they made it ok but prob still persists. I have my 3rd servicing on 24th sept.

      Friends & fellow bikers... pls help!
      ya, i too face the same problem with my dazzler. but the problem generally occurs when i have continuously travelled for more than half an hour on my bike and if i am in high rpms(> than 5k). reported the same problem to honda thrice but the problem was not rectified. i dont know what the problem is????????????

      Comment


      • #4
        i request the pro s here to suggest a solution.... plzz help

        Comment


        • #5
          I have faced the very same problem in numerous bikes (only)
          i guess this happens because of gearbox design (constant mess).
          So, i think there's no rectification possible (would love to proven wrong).
          I do this so that i dont have to face the problem;
          whenever slowing down, also downshift to next lower gear & release clutch. (shift only one gear at a time & release clutch)
          If you further slow down repeat the process again, this way you are also benefiting from engine braking!! Being doing that for long now..
          http://www.facebook.com/ateesh.kumar

          Comment


          • #6
            Originally posted by Honda_CBF View Post
            I have faced the very same problem in numerous bikes (only)
            i guess this happens because of gearbox design (constant mess).
            So, i think there's no rectification possible (would love to proven wrong).
            I do this so that i dont have to face the problem;
            whenever slowing down, also downshift to next lower gear & release clutch. (shift only one gear at a time & release clutch)
            If you further slow down repeat the process again, this way you are also benefiting from engine braking!! Being doing that for long now..

            Thanks for the help. Even I follow this practice generally when the obstacle is visible or apparant from a distance. but when u have to brake suddenly (eg. when the vehicle in front of u stopped with a jolt), then within seconds u have to bring the bike to 1st gear. in this particular event, the prob arises.

            Comment


            • #7
              Same problem with my twister but the service guys solved it during servicing. Keep your chain greased and one of the most effecient way to tackle this problem is to leave the clutch slightly and accelerate(Like you would do to start your bike from a stand still) and press the clutch slightly just to cut the connection to the engine and the gear shift to a lower gear. I never had the problem during 4th or 5th gear but during the first gear. The bike never shifted to first and always used to be stuck at neutral. The above solution did work until the service guy fixed it. The problem does dis-appear as the bike gets older.(Most of my problems did and now the bike is totally problem free)
              I would rather be riding my bike thinking of God, than sitting in the temple thinking of my bike.

              Comment


              • #8
                ^^ In addition to that, changing the oil little early also helped me.
                @pinak the stunner,
                in that case push the bike ahead a little while trying to slot in first gear little throttle also helps.
                An advice to all; try to figure out what other motorist, biker etc will do the next moment..
                Try to scan for obstacles which can make you or the vehicle you are following, to stop suddenly.
                Try to see ahead of the guy you are following.
                Note: this problem can be due to clutch dragging!!
                Last edited by Honda_CBF; 09-20-2011, 07:32 PM.
                http://www.facebook.com/ateesh.kumar

                Comment


                • #9
                  Originally posted by Honda_CBF View Post
                  I have faced the very same problem in numerous bikes (only)
                  i guess this happens because of gearbox design (constant mess).
                  So, i think there's no rectification possible (would love to proven wrong).
                  I do this so that i dont have to face the problem;
                  whenever slowing down, also downshift to next lower gear & release clutch. (shift only one gear at a time & release clutch)
                  If you further slow down repeat the process again, this way you are also benefiting from engine braking!! Being doing that for long now..
                  Honda_CBF: I'd like to correct you. Motorcycles use sequential gearboxes. i.e 1-N-2-3-4-5 unlike the constant mesh which are H types and are used in 4 wheelers.

                  Now the issue Pinak is facing is normal to a certain degree. Motorcycle gearboxes are designed to shift one gear at a time. The gears are engaged due to the rotary motion of the drum.

                  In the situation that Pinak mentioned, (60kmph to 5 or less kmph in a few meters) the drum will be forced to slow down its rotation. This will not help in shifting down a gear. The rider will have to FORCE the 'gear dogs' and shifter to slot into gear by reving the engine and kicking the gear lever with a little more force than usual. This is when we hear the 'clunk' because we force the dog into the slot.

                  Nothing to get worried about, we tend to get hassled with emergency braking or the bike stalling at a stop light, we just have to learn to deal with it in the right way. Even if the bike stalls, moving it a little back and forth while shifting will get us down from any gear to Neutral.

                  Pinak: I suggest you take some time and familiarize yourself and practice gear control. Once you master it, you will be more confident of stopping during emergency braking. Also train your eyes to look beyond the car ahead and read the traffic.

                  However, IF this difficulty happens during normal riding and down shifting, THEN it is not normal. Speak with the workshop manager and fill in a 'faulty gearbox' complaint. Honda will look into it for sure.

                  Hope this Helps. Cheers
                  AJ

                  Comment


                  • #10
                    Originally posted by toxicpowersports View Post
                    Honda_CBF: I'd like to correct you. Motorcycles use sequential gearboxes. i.e 1-N-2-3-4-5 unlike the constant mesh which are H types and are used in 4 wheelers.
                    My understanding is completely opposite than yours.. & I disagree with your above statement (only).
                    I've seen many catalogs, reviews, etc of bikes and they all say CONSTANT MESS under transmission category..
                    http://www.facebook.com/ateesh.kumar

                    Comment


                    • #11
                      I have tried numerous techniques to deal with the situation during heavy traffic including 'Moving back & forth' the bike while trying the bring the gear to 1st. Even this doesn't help.
                      This problem is since 3 months now & I had ample time to understand the problem, its cause & finally the solution. So, what i did was I took my bike on open highway & artificially tried to create the situation where the gear disables (the one I mentioned in my first log). the problem occured everytime I slowed suddenly from 60 to 5 km/hr. and then I tried all sorts of thing like 'Moving back & forth' , revving up slightly before each gear shift etc. nothing worked except I release the clutch slightly & let the 'kut' sound come from gearbox.
                      one more thing I observed is just after servicing, the prob appears at its peak. as the next servicing date arrives, the frequency of the prob tends to reduce!!
                      now what can this mean? What I feel is when the engine oil is new, clutch plates tends to slip more due to less friction. As the engine oil deteriorates, friction between teeth of gears & cluth plate increases resulting in more prominent gear play.
                      one more thing...I oil my chain every week & never allow to dry.
                      I also have a Pulsar 150 sept 2006 model. I dont face any such gearshift problem in it. so that proves my riding habits should be pretty ok.

                      Comment


                      • #12
                        Originally posted by toxicpowersports View Post
                        Honda_CBF: I'd like to correct you. Motorcycles use sequential gearboxes. i.e 1-N-2-3-4-5 unlike the constant mesh which are H types and are used in 4 wheelers.

                        Now the issue Pinak is facing is normal to a certain degree. Motorcycle gearboxes are designed to shift one gear at a time. The gears are engaged due to the rotary motion of the drum.

                        In the situation that Pinak mentioned, (60kmph to 5 or less kmph in a few meters) the drum will be forced to slow down its rotation. This will not help in shifting down a gear. The rider will have to FORCE the 'gear dogs' and shifter to slot into gear by reving the engine and kicking the gear lever with a little more force than usual. This is when we hear the 'clunk' because we force the dog into the slot.

                        Nothing to get worried about, we tend to get hassled with emergency braking or the bike stalling at a stop light, we just have to learn to deal with it in the right way. Even if the bike stalls, moving it a little back and forth while shifting will get us down from any gear to Neutral.

                        Pinak: I suggest you take some time and familiarize yourself and practice gear control. Once you master it, you will be more confident of stopping during emergency braking. Also train your eyes to look beyond the car ahead and read the traffic.

                        However, IF this difficulty happens during normal riding and down shifting, THEN it is not normal. Speak with the workshop manager and fill in a 'faulty gearbox' complaint. Honda will look into it for sure.

                        Hope this Helps. Cheers
                        Agree to your points. We can change only one gear at a time.

                        @Pinak, You have to coordinate and find the right technique to quickly change to lower gears. The best thing is to 'twist the throttle slightly and then immediately change the gear' (called throttle blipping. Caution: Do not change the gear while throttle blipping). Always do throttle blipping while downshifting to lower gears from higher gears. Once you get used to this you will never feel its a problem. In panic braking where you come from top gears to first gear, there bound to be some delay in reaching the first gear and its common for everybody.

                        Try the above and see.
                        HH Karizma (Current) || CBF Stunner PGM-FI || Honda CB Unicorn Dazzler
                        Honda Aviator || Kinetic Flyte || Kinetic Blaze || HH Splendor

                        Two ZMAs, 9 Days in Western Ghats

                        Comment


                        • #13
                          I have this problem in my uni..while shifting from 3rd to 2nd ..I find it a bit hard..I depress the clutch for 1.5/2 secs and then slowly shift it down..do any of you guys have a similar problem??..I asked the mechanic to check it but he says its perfectly alright what to do???

                          P.S there is not harshness while upshifting, it is smooth..but the prblem comes only while downshifting from 3rd to 2nd

                          Comment


                          • #14
                            +1 ravi.
                            @forest,
                            there seems some problem (my opinion) as you are saying problem is only between 2nd & 3rd with downshifts..
                            http://www.facebook.com/ateesh.kumar

                            Comment


                            • #15
                              Originally posted by Honda_CBF View Post
                              My understanding is completely opposite than yours.. & I disagree with your above statement (only).
                              I've seen many catalogs, reviews, etc of bikes and they all say CONSTANT MESS under transmission category..
                              So you're reading the right things CBF ;-) Well, I kinda did not put the info down properly. My Bad...

                              Ok let me put it this way. The motorcycle gearbox IS constant mesh type with sequential shifting.

                              Pinak's issues could be arising from a few issues. Among the things that come up in the culprit list are: Improper clutch operation, improper clutch adjusment, improper engine oil weight, Bent shift forks, bent fork shaft, bent shift claw, damaged shift drum cam grooves or bent shift spindle...

                              If its a major issue, i suggest showing the bike to a company service engineer... and NOT rely only on the local dealer technicians. Many local dealerships prefer to repair non warranty bikes as those are incomes. Pinaks is (under warranty I think so) free work so they will do the normal "chalta hai sahab..." thingy. Not acceptable... Have it sorted with the company man, pinak...
                              AJ

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