Looks interesting! Just what I need to start doing some trials riding on my roadie :-)

haha i like Mr Bassjunkieuk - though you'll have to head to Edinburgh - make a youtube sensation of yourself - people will love it :P

Seems pointless, especially as you have to get a stem as-well.

It also seems pointless if it provides no more power than a standard system, whats the advantage?

It's supposed to be extremely light, less likely to get gunked up and (if you care) slightly more aero than a normal road brake.

and no cable degradation

mtb YES

road NO

The brake itself isn't so cool, but the fact they are able to run normal road levers is great. Before this, if you wanted to run a faux road setup on a mountain bike (drop bars and brifters) you were stuck using crappy cable actuated calipers. Now you can run top quality disc brakes using road levers.

I've pre-ordered a set of PCB MTB disc brakes today. They're just so rad I've gotta try 'em! Due in march 22nd, can hardly wait!

I'll look forward to the £150 version in 2020.

That's a LONG stem! Wonder if the parts will fit inside anything shorter?

Really it's just a Magura brake adapted for the road.

Seems pointless for on road use, how will it differ from the Magura system rim hydraulic which never really caught on. Maybe one day mini rotor discs for road use, that would be progress ---this does not seem to be

Magure HS33, very powerful. maybe too heavy for all the weight weenies these days though

Discs for road use, that would be progress !

not really. discs cause HUGE amounts of aero disturbance so your TT will be slower you'd have to beef up your road forks for the torque produced by the disc brake. heavier hubs with an offset rim again big drag and weight penalty . I can see this working for touring with big panniers full of stuff needing to be slowed down quickly. Magura did make drop HS33 brakes many moons ago .

As a MTBer turned road cyclist I'd love hydraulics on my road bikes. But that is just wrong, putting the fluid reservoir in the stem is a work-around that isn't acceptable on several levels. It makes the bike harder to change bar position and rider position on, it looks ugly cosmetically, and you've not got the benefit of totally eliminating standard cable run.

I appreciate that standard sti etc. drop bar levers have limited space for a reservoir but there must be a better answer. Magura HS33 is that not just for flat bars only? And saying discs would cause HUGE air resistance on a road bike is a bit funny really. Unless you're a pro time trialler, I suggest less pies and more cycling, that'll more than compensate for your brakes causing hurricanes as you struggle along.

This road brake must be a very early prototype because it isn't shown mounted on a bike and the reporter would surely have mentioned if he'd seen it working. So it's more of a model than a brake at the moment.

Waderider ... why would you love to see hydraulics on a road bike ? The main reason for it not being done so far is that it is totally pointless, there would be a weight penaltiy, and road bikes don't have the breaking issues that mountain bikes do, infact didn't campag recently do from 2 pivot read to 1 pivot in order to reduce breaking force on the rear. If u can't lock the wheel up with standard dual pivots, there not set right.

But agree with u, don't see who this is aimed at, your not changing breaking performance (but you might increase modulation) there might be a decrease in weight, by 2 dual pivots come in around 500g so it's not going to be a ton, and if this is aimed at pro's why would they care about this as their bikes are already hitting the limits (and they have to place weights in them)

Pedalmonkey, it's not just about power, it's about control too. And less servicing, no cable drag, less lever effort.

And when I say 'road bikes' I mean all sorts - and of course my tourer first and foremost.

I can't see a point in putting discs on a road bike because as mentioned a single pivot caliper is enough to lock the wheel in most situations hence Campy going back to them on the rear. Plus the road bikes don't have the same type of mud issues as MTB and the road grime they do get ruins disc brakes anyway!

As for these, they remind me of some brakes which I think might have been Grimeca on a Bianchi back in 2001 where it was a cable brake with a hydraulic bit down at the caliper. MEGALOLZ

cyclocross bikes would do well with sonmething simmilar surely

Wader (Sorry not picking just discussing)

I agree (like said in previous post these should give a improved modulation) , but as a mountain biker (racer DH and XC) just don't feel the road bikes suffer from the breaking issues that mountain bikes do, you don't stay on the break for as long (why pedal hard to waste it all breaking) or the cable issues, if you have troubles with your cables on the road, go full length, my single speed goes through rims quicker than cables

Agree that it might be great on a tourer, where it could save you rim issues when out in the out backs, but then for these bikes the weight saving wouldn't be an issue, Like T-mobile says maybe the cyclocross users will love them as don't some pretty scary stuff and the weight / modulation improvement could be beneficial

a nicely engineered solution to a problem that doesnt exist

magura made something very similar to this in the early 90's, didnt sell to well so they dropped it!

In CX I seem to remember discs are banned from a lot of the categories anyway!

Anyone who thinks hydraulic brakes are easier to maintain than cables can`t have used them because they are a real pain in the a#se, at least my Avids are.

antfly, obviously you're not too knowledgeable about disc brakes. Avid has made the best in the biz for years. I've been riding Avid since they first came out with the cable disc brake, and have alway been happy with their brakes

BUT, about this brake, I appreciate the innovation and creativity, don't really see the practicality especially when the roadies love the light weight!

Bikegeeekjames, Ii`m not a mechanic I prefer to ride than fettle brakes all day and cable brakes are a lot simpler and there is a lot less to go wrong.

For a mountain bike or off-road riding rim brakes are potentially hazardous.

Grit gets embedded in the blocks and the grit-loaded blocks rapidly wear aluminium rims. That's why there are wear indicators on rims.

Any more than 0.2 mm wear, it's new rims.

There have been examples of blow-out where front rims have exploded, although mostly using high-pressure tyres.

If you're spending good money on brakes for a mountain bike, I suggest there are better ideas / systems.

It's your money & your life!

See page 13

http://tinyurl.com/yz4uhqu

Clarification:

Rim wear can occur when riding on-road. It's just that off-road riding - even canal tow-paths presents an additional challenge, because they involve more grit that will eventually get on the pads and accelerate rim wear.

Wkipedia has some useful information.

http://en.wikipedia.org/wiki/Bicycle_brake_systems

Safe cycling!