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New Shimano Hydraulic STI Compatible Disc Brakes for road bikes?

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New Shimano Hydraulic STI Compatible Disc Brakes for road bikes?

Old 03-19-13, 10:10 PM
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New Shimano Hydraulic STI Compatible Disc Brakes for road bikes?

I was in the process of ordering a custom bike frametoday and was taken aback by the strange cable routing for the rear disc brake they were recommending. I was told that the strange routing was to be ready for the new Shimano hydraulic disc brakes that are designed for STI levers! If you thought Shimano was going to run out of new things to sell us, have no fear!
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Old 03-19-13, 10:17 PM
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SRAM has one in the works , .. master cylinder in the lever sticks up in front
since the mech for the shifter is already in the Body .
Di2 not being mechanical may let Shimano move the master and expansion tank into Brifter the body.. TRP is Trying to figure oura way around Shimano's patents to offer one, before they do..

stay Tuned..
a short letter from someone in Magura in a trade Magazine questioned the wisdom of the trend to
140 and 160 , in Road Bike discs due to the Velocity that road bikes descend ..

They, for road bikes, have long made hydraulic Rim Brakes, the largest disc. ...

Last edited by fietsbob; 03-23-13 at 12:47 AM.
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Old 03-20-13, 02:55 AM
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TRP is coming out with a caliper that has the cylinder built into it. It's cable actuated so any road lever will work.
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Old 03-21-13, 01:34 PM
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Originally Posted by cs1
TRP is coming out with a caliper that has the cylinder built into it. It's cable actuated so any road lever will work.
Sounds pretty silly... I'm struggling to imagine what point the hydraulic bit serves aside from marketing if it isn't replacing any cable.
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Old 03-21-13, 01:57 PM
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tr!ckstuff was first to market with adapters.

hydraulic is lower maintenance than cable.

https://www.trickstuff.de/de/products/Doppelmoppel.php
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Old 03-21-13, 02:50 PM
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Now that's pretty damn cool.

Seems like quite a groovy mob, that Trickstuff.
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Old 03-21-13, 02:56 PM
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Yea But TRP has the production volume up and running to actually find them in distribution world wide,
right now.

https://www.trpbrakes.com/category.ph...1184&catid=185

https://www.universalcycles.com/shopp...&category=4324

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Old 03-21-13, 03:10 PM
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What is the strange routing of the cable for the rear brake? All disc brakes, hydraulic of mechanical use the same full length cable routing regardless of manufacture, and regardless of bike type.

Shimano road hydraulics are still some way off, prototypes are out there, but don't expect production till next year at the earliest, and they won't be compatible with current STI levers, as they will be a complete system.

As noted, TRP has a few road discs out now, which are compatible with current SI's, the Parabox https://www.trpbrakes.com/category.ph...d=185&subcat=0 and a hydraulic /mechanical hybrid https://urbanvelo.org/trp-hybrid-hydr...brake-caliper/
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Old 03-21-13, 03:15 PM
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TRP already offers the Parabox, a technically interesting but rather obvious stepping stone piece of hardware to graft road levers and hyraulic brakes together, but these all in one hybrid calipers seem a much better solution to me.
Pff, if you just want to say you have hydraulic brakes, maybe... but like I said, a hybrid system can only be as good as the amount of cable it eliminates.

A hybrid caliper eliminates none; I can't see the point.
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Old 03-21-13, 03:17 PM
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Putting the master & slave cylinder together loses the benefit of the frictionless hydraulic line, from the Lever,
but will gain the Hydraulic Caliper's Brake Pad wear self adjustment..
for those who cannot be bothered to do it themselves..

Back in the 90's in Europe, in the JH / Hostel bike shed
I saw a different combination .. the hydraulics was the Lever-Master and line,
the slave, bolted on the fork crown, pushed the brake cable

connecting the cantilever brakes, Up.
the braking was still that largest of discs, the rims.

Last edited by fietsbob; 03-21-13 at 03:27 PM.
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Old 03-22-13, 09:54 PM
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Originally Posted by jimc101
What is the strange routing of the cable for the rear brake? All disc brakes, hydraulic of mechanical use the same full length cable routing regardless of manufacture, and regardless of bike type.

Shimano road hydraulics are still some way off, prototypes are out there, but don't expect production till next year at the earliest, and they won't be compatible with current STI levers, as they will be a complete system.

As noted, TRP has a few road discs out now, which are compatible with current SI's, the Parabox https://www.trpbrakes.com/category.ph...d=185&subcat=0 and a hydraulic /mechanical hybrid https://urbanvelo.org/trp-hybrid-hydr...brake-caliper/
I will try to get some more details as I am just going by pictures and from talking to my LBS who is working with CoMotion. They apparently have switched their newest frames to a cable routing system "in anticipation of hydraulic STI disc brake levers" where the cable runs under the BB shell then half way back the chainstay, then wraps around the outside of the stay and up to the caliper. Sounds really strange to me too, but that is what they explained to my LBS when on the phone working details out for a custom frame. I have not paid yet, so will get to the bottom of this before I write a check. CoMotion wants an extra $100 to route the rear brake cable the conventional way I was told.
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