Video: Magura RT6TT Hydraulic Road Brakes In Action, Plus Detail Photos – UPDATED

Magura’s RT-TT series of brakes are the first modern hydraulic rim brakes designed specifically road bikes, TT and triathlon bikes in particular since shifters aren’t integrated into the levers…and the lever shape, for now, is designed exclusively to fit into bullhorn and aero bars.

The design is interesting, using a vertical piston to drive a wedge between rollers on opposing brake arms. As it splits them up top, the pads are pushed toward the rim. The sample captured didn’t have pads included (it was shipped to Parlee to play with, I just happened to be there when the box was opened FTW), but it’s neat to see how it works. Skid past the break for lots of pics…

Magura RT6TT hydraulic road brake weight

The rear brake without pads/pad holders came in at 305g, which means the top level RT8TT must be significantly lighter if it’s going to come in at the claimed 495g system weight.

UPDATE #1: The RT8TT uses alloy hardware and brake arm pivot bolts where the 6 uses steel. Both use aluminum for the body of the master cylinder and brakes.

The lever slides into the end of an bullhorn style aero bars. Triathletes, just look away now – Yes, this means the system will need to be disconnected at at least one end to install it. The bolt on the top tightens the expansion wedge to keep it in place.

Magura RT6TT hydraulic road brake video closeup details and weight

Reach adjust is handled through a screw in the front. The RT6TT gets an alloy lever versus the RT8TT’s carbon fiber one.

UPDATE #2: The brakes will likely initially ship without pads and holders,  but they’ll start being included eventually. The system opens enough to accommodate a 28mm wide rim. They will, however, include shims. Combined with the reach adjust, they let you fine tune the space between the pads and the rims, letting you run super narrow carbon climbing wheels along with the current crop of wide aero rims.

Magura RT6TT hydraulic road brake video closeup details and weight

A heavily shaped spring opens the brakes back up.

Magura RT6TT hydraulic road brake video closeup details and weight

Magura RT6TT hydraulic road brake video closeup details and weight

UPDATE #3: The wedge is a self-lubricating composite, and Magura’s U.S. Technical Service Mgr. Jude Monica says wear should be minimal considering the minuscule amount of movement and that it’s only pushing on roller bearings.

Magura RT6TT hydraulic road brake video closeup details and weight

The quick release lever under the master cylinder pushes the lever open, which opens the brakes wider for easier wheel removal.

Magura RT6TT hydraulic road brake video closeup details and weight

Whether it was born of necessity or not, we’ve gotta admit that Avid’s pro bleed kit is head and shoulders above the base models from Magura and TRP…which may not matter with these TT brakes because let’s face it, how many triathletes do you know that work on their own bikes?

Check out the original tech post on these brakes here.

Comments

Chris - 04/05/12 - 4:00pm

“the first modern hydraulic rim brakes designed specifically road bikes”

No they’re not. Magura made road specific hydraulic rim brakes for road bikes not that long ago.

BTW am I the only one old enough to think these look like the Modolo Kronos brake on steroids?

laranja - 04/05/12 - 4:29pm

Anyone else think this video is vaguely pornographic?

greg - 04/05/12 - 8:47pm

more like a suntour/wtb rollercam brake that’s been shrunk.
the bolt on top that tightens the wedge is a “why didnt someone come up with this years ago?” thing. having a cable go through the mounting bolt (like most tt levers) so you cant tighten or readjust position of the lever without fully dismantling the thing, is a pain.
but magura better figure out where to put the di2 buttons, pronto.

MTB - 04/06/12 - 4:22am

I thought Cervelo had some exclusive rights with these brakes being available only on their new P5 bikes for couple of years.

So, now we can just buy the brakes?

AJ - 04/08/12 - 6:07pm

little bit off-topic: but where can I buy this floor protecting mats that can be seen on the pictures… thx for any advice.

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