Hydraulic road brakes

Chips Lovell

Announced today:

seamus

No mention of price, but I'm thinking around the $1,000 mark for the full set. And they only appear to be made for those funny-shaped bikes used for a discipline where you do as little braking as possible. And 200g heavier than Dura-Ace.

Looks like a bit of an engineer's wankfest to me tbh. They look cool, and they've no doubt done some cool stuff to achieve this. But do they actually serve a purpose?

AstraMonti

The new Cervelo P5 has these:

Lumen

AstraMonti wrote: »

The new Cervelo P5

Not UCI legal. The UCI legal version is this:

niceonetom

Not sure I see the point. I mean that doesn't look more aero than the (UCI legal) Trek Speed Concept which somehow gets by with good ol' fashioned cables.

bcmf

http://www.bikerumor.com/2012/01/15/hydraulic-shimano-dura-ace-brake-lever-leaked/

Maybe a fake.

manwithaplan

New Hydraulic Lever Leaked

An inauspicious start.

Chips Lovell

seamus wrote: »

But do they actually serve a purpose?

Coming to a nervous A4 bunch near you soon....

Chips Lovell

bcmf wrote: »

http://www.bikerumor.com/2012/01/15/hydraulic-shimano-dura-ace-brake-lever-leaked/

Maybe a fake.

Not a fake, just not Shimano. Story updated now:

The shifter/lever body is a bespoke unit built for the BERU Factor001 road bike. We’ve posted about the bike before, and when one of their insiders saw the image above, they let us know it was theirs.

Lumen

I don't care whether hydraulic road/CX brakes are better or worse, I just want them to exist so I can find out.

gman2k

http://www.chainreactioncycles.com/News.aspx?NewsID=2027&PartnerID=3601

billy.fish

seamus wrote: »

No mention of price, but I'm thinking around the $1,000 mark for the full set. And they only appear to be made for those funny-shaped bikes used for a discipline where you do as little braking as possible. And 200g heavier than Dura-Ace.

Looks like a bit of an engineer's wankfest to me tbh. They look cool, and they've no doubt done some cool stuff to achieve this. But do they actually serve a purpose?

If you read the bIkerumour article:

599 for TT setup, 499 for road. Euro.

Awesome, its like the 90's all over again with the HS33 road brake.

AstraMonti

Well ok, you ll have better modulation and power with the hydraulics, but really what's the point with rim brakes? Any mid and up level brake has more than adequate power to stop you. And with that weight penalty I ll probably stay away for a while. It probably would make sense for CX bikes and tandems, at this stage at least.

billy.fish

AstraMonti wrote: »

Well ok, you ll have better modulation and power with the hydraulics, but really what's the point with rim brakes? Any mid and up level brake has more than adequate power to stop you. And with that weight penalty I ll probably stay away for a while. It probably would make sense for CX bikes and tandems, at this stage at least.

Weight supposidly comes in at same as DA with cables for the full system. So...no penalty.

Not enough clearance for CX, anyway we're moving towards discs despite what you all will complain about etc etc blah

Touring and tandem have been using HS33's for years, love mine, gave them to my GF a few years back for commute duties they've never needed a bleed in the 10 years I've had them. Excellent brakes.

I just love the German release from Magura suggesting they'll 'be good for women who road race' ...cause their tiny little hands can't pull hard enough I assume *insert sexy comment here* fnnnar fnaarrr fnarrr.



I'll get my coat.....

Lumen

billy.fish wrote: »

I just love the German release from Magura suggesting they'll 'be good for women who road race' ...cause their tiny little hands can't pull hard enough

I assume the issue is that small hands can't pull FAR enough, rather than hard enough.

Mechanically actuated levers require a large amount of lever travel, because the lever continues moving after the pad has made contact, whereas with hydraulics the lever stops at that point and more force can be applied.

I don't own hydraulic brakes, but is this your experience with the Maguras?

billy.fish

Lumen wrote: »

I assume the issue is that small hands can't pull FAR enough, rather than hard enough.

Mechanically actuated levers require a large amount of lever travel, because the lever continues moving after the pad has made contact, whereas with hydraulics the lever stops at that point and more force can be applied.

I don't own hydraulic brakes, but is this your experience with the Maguras?

The lever still moves after the pad makes contact, this is where the feel comes in, its no different than a cable brake, just no pointless travel. Its like a car, you just get a more linear increase in braking for your lever travel, its not exponential like a cable brake that takes up a lot more power when the cable is fully tensioned.

Assuming they are bled correctly. I've MTB discs in various states of bleeding from on/off over 2mm travel to 2cm travel

Surprised no one has mentioned the heating factor and how it affects the braking, probably more of a factor with discs and badt dot4 fluid, but it was always noticeable on the HS33's on long descents with lots of fether braking. But you can wind of the pads from the lever to compensate. The HS-11's couldnt...and they sucked.

ednwireland

never had a problem with my hs33's ever not even noticd the heat issue (never ridden them outside uk anyway might have something to do with it)