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Yamaha FZ-16/ FZ-S

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  • Re: Yamaha FZ-16/ FZ-S

    Originally posted by devils_friend View Post
    So, you mean to say that, I have to press the brake lever untill the air bubbles stop popping out in fluid chamber?
    Yes. The whole system should be air-bubble free. Keep pressing the lever till the bubbles stop popping.

    Ride safe and have fun.
    Regards
    Nadeem

    Comment


    • Re: Yamaha FZ-16/ FZ-S

      Originally posted by nadz11.ns View Post
      Yes. The whole system should be air-bubble free. Keep pressing the lever till the bubbles stop popping.
      Alternatively you can use a rubber band to hold the lever for a night that will remove any excess bubbles in the system.

      RULE The Road, But First Wear The CROWN
      Off the BOTTLE & On the THROTTLE

      Comment


      • Re: Yamaha FZ-16/ FZ-S

        Originally posted by Jith_in View Post
        Alternatively you can use a rubber band to hold the lever for a night that will remove any excess bubbles in the system.

        RULE The Road, But First Wear The CROWN
        Ohh.. Is it so! I didn't knew about this.

        But won't it cause any complication to the system ?

        Ride safe and have fun.
        Regards
        Nadeem

        Comment


        • Re: Yamaha FZ-16/ FZ-S

          Originally posted by nadz11.ns View Post
          Ohh.. Is it so! I didn't knew about this.

          But won't it cause any complication to the system ?
          Nope[emoji6]

          RULE The Road, But First Wear The CROWN
          Off the BOTTLE & On the THROTTLE

          Comment


          • Re: Yamaha FZ-16/ FZ-S

            Originally posted by Jith_in View Post
            Nope [emoji6]
            Good to know. Will do this next time.
            [MENTION=47870]devils_friend[/MENTION]... You should try this and see if it help.

            Ride safe and have fun.
            Regards
            Nadeem

            Comment


            • Re: Yamaha FZ-16/ FZ-S

              Originally posted by Jith_in View Post
              Alternatively you can use a rubber band to hold the lever for a night that will remove any excess bubbles in the system.
              How does this work? i,e how does bubbles in brake line bubble up to reservoir when lever is pressed overnight.
              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
              Join https://www.hattrick.org/ to manage a virtual football club from India. Nearly 300,000 managers from 128 countries fighting to make their mark.

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              • Re: Yamaha FZ-16/ FZ-S

                Originally posted by Freak inExile View Post
                How does this work? i,e how does bubbles in brake line bubble up to reservoir when lever is pressed overnight.
                By using the brakes whilst riding, they don't remain 'open' long enough to allow the air to move, by leaving them overnight (with the reservoir as the highest point of the system), you give the air enough time to work it's way up the hose to the reservoir. This doesn't get rid of all air but gets rid of a huge chunk.

                Thing to be aware of is Dot fluid is hydroscopic so rather than leaving the top cap off and the fluid exposed, people tend to lock the lever down and in the morning, remove the top cap, then release the lever. Normally if there is air in the system one can see a drop in the fluid level, which they simply top up and put top cap back on.
                Last edited by Divya Sharan; 06-09-2015, 07:45 AM. Reason: Grammar
                Got a $5 head? Get a $5 helmet.
                Because everyone who passes, isn't a martyr!

                Bullet Service Guide CBR 250R Parts Manual Fz16 service manual - https://drive.google.com/file/d/0B1-...VFQmJzakk/view
                Hero Moto Corp Bikes' Parts RE STD 350 Wiring Diagram (CI) Service Manual - Classic 350/500
                ZMR parts - https://drive.google.com/file/d/0B-U...it?usp=sharing
                P200NS Spares' prices - https://docs.google.com/spreadsheet/...taGd5R2c#gid=0

                Comment


                • Re: Yamaha FZ-16/ FZ-S

                  Originally posted by Divya Sharan View Post
                  By using the brakes whilst riding, they don't remain 'open' long enough to allow the air to move, by leaving them overnight (with the reservoir as the highest point of the system), you give the air enough time to work it's way up the hose to the reservoir. This doesn't get rid of all air but gets rid of a huge chunk.
                  Isn't that piston supposed to be leak-proof? How does hydraulic brake work with a leak when lever is depressed?

                  And air doesn't bubble up without depressing lever?
                  Last edited by Freak inExile; 06-09-2015, 10:14 AM.
                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                  Join https://www.hattrick.org/ to manage a virtual football club from India. Nearly 300,000 managers from 128 countries fighting to make their mark.

                  Comment


                  • Re: Yamaha FZ-16/ FZ-S

                    Originally posted by Freak inExile View Post
                    Isn't that piston supposed to be leak-proof? How does hydraulic brake work with a leak when lever is depressed?

                    And air doesn't bubble up without depressing lever?
                    Air molecules are thinner. Pistons are leak proof w.r.t brake fluid, not air. Without depressing lever, air might take it's own sweet time to bubble out.
                    Got a $5 head? Get a $5 helmet.
                    Because everyone who passes, isn't a martyr!

                    Bullet Service Guide CBR 250R Parts Manual Fz16 service manual - https://drive.google.com/file/d/0B1-...VFQmJzakk/view
                    Hero Moto Corp Bikes' Parts RE STD 350 Wiring Diagram (CI) Service Manual - Classic 350/500
                    ZMR parts - https://drive.google.com/file/d/0B-U...it?usp=sharing
                    P200NS Spares' prices - https://docs.google.com/spreadsheet/...taGd5R2c#gid=0

                    Comment


                    • Re: Yamaha FZ-16/ FZ-S

                      Originally posted by Divya Sharan View Post
                      Air molecules are thinner. Pistons are leak proof w.r.t brake fluid, not air.
                      Can anyone else corroborate it?
                      Originally posted by Divya Sharan View Post
                      Without depressing lever, air might take it's own sweet time to bubble out.
                      And how does depressing lever expedite the process of bubbling-up?
                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                      Join https://www.hattrick.org/ to manage a virtual football club from India. Nearly 300,000 managers from 128 countries fighting to make their mark.

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                      • Re: Yamaha FZ-16/ FZ-S

                        Originally posted by Freak inExile View Post
                        And how does depressing lever expedite the process of bubbling-up?
                        It's simple! Once the lever is pressed; you're forcing brake fluid onto the pistons, visble as pads rubbing the rotor. Now, from elementary science we know that water/liquid displaces air all the time. One can try it out for themselves with a cold drink pet bottle.
                        The same logic applies here. You're forcing brake fluid unto the piston continuously. This leaves no space for any air molecules and they rise up the chamber.
                        Got a $5 head? Get a $5 helmet.
                        Because everyone who passes, isn't a martyr!

                        Bullet Service Guide CBR 250R Parts Manual Fz16 service manual - https://drive.google.com/file/d/0B1-...VFQmJzakk/view
                        Hero Moto Corp Bikes' Parts RE STD 350 Wiring Diagram (CI) Service Manual - Classic 350/500
                        ZMR parts - https://drive.google.com/file/d/0B-U...it?usp=sharing
                        P200NS Spares' prices - https://docs.google.com/spreadsheet/...taGd5R2c#gid=0

                        Comment


                        • Re: Yamaha FZ-16/ FZ-S

                          Originally posted by Divya Sharan View Post
                          It's simple! Once the lever is pressed; you're forcing brake fluid onto the pistons, visble as pads rubbing the rotor. Now, from elementary science we know that water/liquid displaces air all the time. One can try it out for themselves with a cold drink pet bottle.
                          The same logic applies here. You're forcing brake fluid unto the piston continuously. This leaves no space for any air molecules and they rise up the chamber.
                          Please explain that bold statement.

                          Pistons are leak proof w.r.t brake fluid, not air
                          Once Master-Cylinder-Piston gets past the intake port it has to be leak proof for working. We're talking about fraction of mm displacement of disc-pads for effective braking.

                          from elementary science we know that water/liquid displaces air all the time
                          In a closed system liquids actually compress gasses, also most liquids are incompressible.

                          You're forcing brake fluid unto the piston continuously. This leaves no space for any air molecules and they rise up the chamber.
                          Since brake liquids are incompressible, under pressure trapped air is compressed and hence becomes denser.

                          How does compressed/denser air bubble-up better than uncompressed air in brake fluid?
                          Last edited by Freak inExile; 06-09-2015, 01:06 PM.
                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                          Join https://www.hattrick.org/ to manage a virtual football club from India. Nearly 300,000 managers from 128 countries fighting to make their mark.

                          Comment


                          • Re: Yamaha FZ-16/ FZ-S

                            The brakes work because the brake fluid is incompressible. Air is air, whether normal or dense. It will get compressed under pressure and in case of braking system, this won't allow the fluid to work properly as the air bubble will get compressed.

                            When the lever is pressed, the fluid applies pressure onto the callipers and cause braking action. Pressing of lever moves the fluid towards the callipers under pressure and if there are air bubbles present, they will be displaced by the fluid and they will move up.

                            Ride safe and have fun.
                            Regards
                            Nadeem

                            Comment


                            • Re: Yamaha FZ-16/ FZ-S

                              Originally posted by Freak inExile View Post
                              Please explain that bold statement.

                              Once Master-Cylinder-Piston gets past the intake port it has to be leak proof for working. We're talking about fraction of mm displacement of disc-pads for effective braking.

                              In a closed system liquids actually compress gasses, also most liquids are incompressible.

                              Since brake liquids are incompressible, under pressure trapped air is compressed and hence becomes denser.

                              How does compressed/denser air bubble-up better than uncompressed air in brake fluid?
                              1. Brake fluids are incompressible and hence they force the air out of the system. What is that you're unable to comprehend here?
                              2. Pistons are not 100% leak proof (for air). They are for liquids.

                              For the pet bottle experiment, please use Google.


                              Originally posted by nadz11.ns View Post
                              When the lever is pressed, the fluid applies pressure onto the callipers and cause braking action. Pressing of lever moves the fluid towards the callipers under pressure and if there are air bubbles present, they will be displaced by the fluid and they will move up.
                              As simple as that! Now if members start disecting stuff and get into the physics of it, then I'm afraid I'm not the right person for it.
                              Got a $5 head? Get a $5 helmet.
                              Because everyone who passes, isn't a martyr!

                              Bullet Service Guide CBR 250R Parts Manual Fz16 service manual - https://drive.google.com/file/d/0B1-...VFQmJzakk/view
                              Hero Moto Corp Bikes' Parts RE STD 350 Wiring Diagram (CI) Service Manual - Classic 350/500
                              ZMR parts - https://drive.google.com/file/d/0B-U...it?usp=sharing
                              P200NS Spares' prices - https://docs.google.com/spreadsheet/...taGd5R2c#gid=0

                              Comment


                              • Re: Yamaha FZ-16/ FZ-S

                                If the whole braking system were to be 100% leak proof, then there shouldn't be any air inside the system. Over a period of time, air will penetrate through the system.

                                Ride safe and have fun.
                                Regards
                                Nadeem

                                Comment

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