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Disc Break affects on freeplay of front wheel...:-(

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  • #1

    Disc Break affects on freeplay of front wheel...:-(

    hie guys....
    My HH Glamour had front disc break.
    It is affectng on freeplay of front wheel.


    I just serviced disc break assembly from my reguler mechanic.
    Is there any need to replace the disc pistons??
    Disc Pads are good in condition as my mechanic said n no need to change pistons.
    but i still have following Problems:
    1.pick up is get decrease nowdays.
    2.also affected on mileage.
    3.top speed only 90km/h on single seat & 80km/h with pilion.
    Tags: None
  • #2
    Query Approved

    Wheels of bikes with disc brakes never rotate freely. There is always *some* drag. As long as you can still rotate the wheel 1/2 a rotation in 1 firm push by hand, it is alright.

    The reduced top speed could be due to some different reason. Do mention your odo reading and age of the bike so that people can help you out better.
    Advice is a form of nostalgia.
    Dispensing it is a way of fishing the past from the disposal, wiping it off, painting over the ugly parts and recycling it for more than it's worth.

    Antz Travelz!! | South India Exploration Ride | Leh Triplog (Work in progress)

    Comment

    • #3
      [QUOTE=antz.bin;835836]

      Wheels of bikes with disc brakes never rotate freely. There is always *some* drag. As long as you can still rotate the wheel 1/2 a rotation in 1 firm push by hand, it is alright.

      QUOTE]

      +1
      and adding to that, after having a ride, of say around 10 kms (dont use disk brake throught out the ride). touch the brake disk with your clean finger (beware.. it can burn your fingers if its really problematic) now the heat on the disk should be less than the front tyre.
      http://www.facebook.com/ateesh.kumar

      Comment

      • #4
        [QUOTE=Honda_CBF;836247]
        Originally posted by antz.bin View Post

        +1
        and adding to that, after having a ride, of say around 10 kms (dont use disk brake throught out the ride). touch the brake disk with your clean finger (beware.. it can burn your fingers if its really problematic) now the heat on the disk should be less than the front tyre.
        +1
        please don't take a risk of touching disc plate directly, first touch caliper assembly. if its cool, then only dare to touch plate. if caliper is hot, drop some water on plate, whole drop wont evaporate but it will give you sound of evaporation as soon as drop touches the plate. if so, do check caliper once more. don't forget to check whether disk is bent a bit. this may cause the problem which you are facing.

        Cheers.

        Comment

        • #5
          [QUOTE=on2wheels;836428]
          Originally posted by Honda_CBF View Post

          1
          please don't take a risk of touching disc plate directly, first touch caliper assembly. if its cool, then only dare to touch plate.
          Cheers.
          10.
          But I dont think it will be hot enough to burn fingers, because bike can do 90kmph and top speed is 95 something i guess.
          SID BHP where are you??
          http://www.facebook.com/ateesh.kumar

          Comment

          • #6
            Once the Disc plate gains a certain momentum, it automatically gets free from the pads due to heat gained prior to the momentum, thats the concept in which Disc brakes are designed worldwide.

            If you feel your case is abnormal, then there are only 3 things to check,

            1) Brake pads
            2) If new pads are replaced, then the disc plate age (Concentric circles)
            3) Very rarely the piston may apply over pressure, which can be released with a full oil drain/fill.
            Last edited by HarishK; 07-04-2012, 11:51 PM.
            https://www.facebook.com/harishtheboss

            Comment

            • #7
              Check if pistons are jammed or not retracting properly. If you have never cleaned them, probably the case as well.
              If you are little bit mechanical minded and have the tools, procedure should be similar to below....

              Open the caliper bolts.
              Pull them out.
              Take out the locking pin or something similar mechanism. (Dont press lever from this point till your done else you will suck air)
              Pull the pads out.
              Clean the pistons.
              Have a look at the pads, Glazed? good time to remove it as well with fine grit sandpaper.
              Put the pads in.
              Put the locking pin.
              Put the caliper bolts and torque with values specified.
              Once done, pull in/out your lever a few times to get the feel back.
              Bed them in.

              (Have you bed the new pads though?)

              Dont try it if you arent sure ...
              **My comments are solely mine and not necessarily useful in all situations and places. They may or may not work for you but they might work for me. Use your diligence at all times**

              Comment

              • #8
                Re: Disc Break affects on freeplay of front wheel...:-(

                Guys I have a similar problem but my disc is bent like 1%, due to which it is creating a little friction to the front wheel. Can I get it repair? Or had to change the whole disc?

                Comment

                • #9
                  Re: Disc Break affects on freeplay of front wheel...:-(

                  Originally posted by metalrider94 View Post
                  Guys I have a similar problem but my disc is bent like 1%, due to which it is creating a little friction to the front wheel. Can I get it repair? Or had to change the whole disc?

                  So how did you detect the 1% bend?

                  Comment

                  • #10
                    Re: Disc Break affects on freeplay of front wheel...:-(

                    Originally posted by antz.bin View Post
                    Query Approved

                    Wheels of bikes with disc brakes never rotate freely. There is always *some* drag. As long as you can still rotate the wheel 1/2 a rotation in 1 firm push by hand, it is alright.

                    The reduced top speed could be due to some different reason. Do mention your odo reading and age of the bike so that people can help you out better.

                    I do have the same problem with my Yamaha SZ-R. After seeing the above comment I have checked the front wheel of my friend's Unicorn, Pulzar, Discover etc. All are able to rotate smoothly.

                    Comment

                    • #11
                      Re: Disc Break affects on freeplay of front wheel...:-(

                      Originally posted by Abishek94 View Post
                      So how did you detect the 1% bend?
                      My front wheel is not moving as freely as rear one, both wheels has disc brakes. And moreover I had a minor accident long before , now when I told about it to svc guys they said you need to replace it.

                      Comment

                      • #12
                        Re: Disc Break affects on freeplay of front wheel...:-(

                        Probably ur disc rotor would have bend

                        Comment

                        • #13
                          Re: Disc Break affects on freeplay of front wheel...:-(

                          Guys, if the disc plate is slightly bent can it be repaired? Or is it must to buy a new one?
                          Phoenix Came, Saw and Conquer My Heart, Forever...

                          Comment

                          • #14
                            Re: Disc Break affects on freeplay of front wheel...:-(

                            Originally posted by AbhiAvvy13 View Post
                            Guys, if the disc plate is slightly bent can it be repaired? Or is it must to buy a new one?

                            If you can then you should buy a new one, but if can be repaired obviously it can't be as the new one.
                            No replacement for an engine Displacement

                            Comment

                            • #15
                              Re: Disc Break affects on freeplay of front wheel...:-(

                              Originally posted by Suraj200 View Post
                              If you can then you should buy a new one, but if can be repaired obviously it can't be as the new one.
                              Ok brother. Thanks
                              Phoenix Came, Saw and Conquer My Heart, Forever...

                              Comment

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