Brake Line Setups

[Pittenger5]

Gonna get new brake lines since mine are janky, is there any specific advantage to any of the setups below? I would think the dual line (#2) would be easier for bleeding, but do you lose any performance or anything over option 1 and 3

[OreoGaborio]

I don't think any set-up reduces performance in any way whatsoever.

[MFChop]

Spiegler FTMFW!!!

Anything is a huge advantage over OEM #2 is the most common setup used. I personally run there #2 setup on my bike

If you have the option of running their 950 or Rennsport set up and cost isn't prohibitive, Id go that route

[Paul_E_D]

Actually. I think you lose some line pressure with dual lines.

[The Snowman]

Actually. I think you lose some line pressure with dual lines.

makes some sense, since the MC pushes through a single line until it splits for all but the dual line setup.

[Kurlon]

makes some sense, since the MC pushes through a single line until it splits for all but the dual line setup.

Simpler explanation: Two lines from the master makes for longer total line used, which means more volume in the whole system.

[wiggeywackyo]

I'm going to have to recommend HEL. They are fantastic lines with great quality and chances are they'll have the perfect length for your bike. They also come in a ton of different colors too.

HEL Performance USA | Stainless Steel Braided Brake Lines

Talk to Jim Miller and tell him Jack Mach sent you.

[LuvDog]

I run the #2 dual line setup for my bikes.

The #1 setup seems to me the worst of the bunch.

[Spooler]

+1 for #2 and HEL.

[imstuner]

Option 3 for less clutter.

[dannyjm]

I don't think total volume in the system makes any difference since both calipers require the same fluid displacement to push the pistons in any configuration. It seems like parallel lines might be more responsive and balanced.

[Tokyo Drift]

Simpler explanation: Two lines from the master makes for longer total line used, which means more volume in the whole system.

More total volume in a system doesn't affect the work the system performs; it's the change in volume that does. Assuming the lines don't distort under pressure, their total length could be infinite with no impact on braking pressure.

Also, pressure in the system is the same at any given point in the system. You won't ever have a side-to-side difference in any of the line configurations.

[dannyjm]

More total volume in a system doesn't affect the work the system performs; it's the change in volume that does. Assuming the lines don't distort under pressure, their total length could be infinite with no impact on braking pressure.

Also, pressure in the system is the same at any given point in the system. You won't ever have a side-to-side difference in any of the line configurations.

So are you saying that the pressure in the whole system is instantaneously the same everywhere? What about a system of two sizeable tanks connected by a thin rigid tube. If you increased the pressure in one tank, it seems to me the pressure in the second tank would rise gradually limited by the transmittance or pumping speed of the restrictive line. I'm just sayin'.

[Kurlon]

Assuming the lines don't distort under pressure

This is not a safe assumption.

[Tokyo Drift]

So are you saying that the pressure in the whole system is instantaneously the same everywhere? What about a system of two sizeable tanks connected by a thin rigid tube. If you increased the pressure in one tank, it seems to me the pressure in the second tank would rise gradually limited by the transmittance or pumping speed of the restrictive line. I'm just sayin'.

It's a simple hydraulic circuit with a non-compressible fluid, and it's basically "static" once the brake pistons are fully extended. From that point, increasing the displacement of the master cylinder is only going to correlate to a rise in system pressure.

This is not a safe assumption.

I never said it was accurate, just trying to iterate the concept to those unfamiliar with it.

[Jim]

I used the 2-in-1 setup (#3 on your picture) and switched to dual single lines (#2 in your picture).
dont notice a difference in the two.
i switched because the ones i use now are a bit thinner and pressurize a bet better.

my next set will be the 2-in-1 lines again.

[TheIglu]

Doesn't matter what you do, just replace it with a radial master. That fixes everything in all situations ever.

[Pittenger5]

I went with #2.