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Yamaha FZ-16/ FZ-S
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Re: Yamaha FZ-16/ FZ-S
Alternatively you can use a rubber band to hold the lever for a night that will remove any excess bubbles in the system.Originally posted by nadz11.ns View PostYes. The whole system should be air-bubble free. Keep pressing the lever till the bubbles stop popping.
RULE The Road, But First Wear The CROWNOff the BOTTLE & On the THROTTLE
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Re: Yamaha FZ-16/ FZ-S
Ohh.. Is it so! I didn't knew about this.Originally posted by Jith_in View PostAlternatively 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
But won't it cause any complication to the system ?
Ride safe and have fun.
Regards
Nadeem
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Re: Yamaha FZ-16/ FZ-S
How does this work? i,e how does bubbles in brake line bubble up to reservoir when lever is pressed overnight.Originally posted by Jith_in View PostAlternatively you can use a rubber band to hold the lever for a night that will remove any excess bubbles in the system.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Re: Yamaha FZ-16/ FZ-S
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.Originally posted by Freak inExile View PostHow does this work? i,e how does bubbles in brake line bubble up to reservoir when lever is pressed overnight.
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.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
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Re: Yamaha FZ-16/ FZ-S
Isn't that piston supposed to be leak-proof? How does hydraulic brake work with a leak when lever is depressed?Originally posted by Divya Sharan View PostBy 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.
And air doesn't bubble up without depressing lever?Last edited by Freak inExile; 06-09-2015, 10:14 AM.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Re: Yamaha FZ-16/ FZ-S
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.Originally posted by Freak inExile View PostIsn'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?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
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Re: Yamaha FZ-16/ FZ-S
Can anyone else corroborate it?Originally posted by Divya Sharan View PostAir molecules are thinner. Pistons are leak proof w.r.t brake fluid, not air.
And how does depressing lever expedite the process of bubbling-up?Originally posted by Divya Sharan View PostWithout depressing lever, air might take it's own sweet time to bubble out.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Re: Yamaha FZ-16/ FZ-S
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.Originally posted by Freak inExile View PostAnd how does depressing lever expedite the process of bubbling-up?
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
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Re: Yamaha FZ-16/ FZ-S
Please explain that bold statement.Originally posted by Divya Sharan View PostIt'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.
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.Pistons are leak proof w.r.t brake fluid, not air
In a closed system liquids actually compress gasses, also most liquids are incompressible.from elementary science we know that water/liquid displaces air all the time
Since brake liquids are incompressible, under pressure trapped air is compressed and hence becomes denser.You're forcing brake fluid unto the piston continuously. This leaves no space for any air molecules and they rise up the chamber.
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.
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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
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Re: Yamaha FZ-16/ FZ-S
1. Brake fluids are incompressible and hence they force the air out of the system. What is that you're unable to comprehend here?Originally posted by Freak inExile View PostPlease 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?
2. Pistons are not 100% leak proof (for air). They are for liquids.
For the pet bottle experiment, please use Google.
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.Originally posted by nadz11.ns View PostWhen 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.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
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