2 Line Versus Three

Braking issues
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Roddie
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2 Line Versus Three

Post by Roddie »

Can anybody tell me the pros and cons of the different line setups for the front brakes? Race bikes have two lines but road bikes usually have three. Is there any particular reason for this? I only ride on the road, but I'd happily use a 2 line over a 3 if there's no disadvantage, as it's cheaper to buy! :)
KR1s c2, NS400, RS250, ZX6R
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JanBros
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Post by JanBros »

there is absolutly no difference if it comes to performance :wink:
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KR-1R
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Post by KR-1R »

.
.
the other option is some modern bikes use a single line to one caliper and a link line over the mudguard to the other caliper

this could make bleeding difficult because of the high point above the mudguard that might gather air pockets
mj43
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Post by mj43 »

It is also illegal for racing as if a mudguard gets ripped off because debris gets trapped under it, it could take the brake line with it. Result no front brakes. For racing brake lines must split above the lower yoke, i.e. well clear of any mudguard.
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smithyrc30
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Post by smithyrc30 »

The racing racing rule is a crock of shit.

Once one line is gone the one line will bleed fuid, it always takes the easiest path. So without a close of valve in each line it will always pump fuild to the open line.

The result is no brakes no matter which way you look at it, the lever will come back to the bars.

Once the reservoir is empty there is no more fluid to work with and no more attempts at brakes.
tzr rider
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Post by tzr rider »

Hi,
can anyone tell me how long the brake lines are if I´ve a two line setup?
And perhaps wich angle the fittings have.

Cheers MArtin
Bogan
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Post by Bogan »

Have a look at the bottom few questions here:

http://www.helperformance.com.au/brake- ... p?page=7#5
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Garry
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Post by Garry »

Smithy i think your argument just substantiates Marks reason for not
routing directly over the mudguard :)
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