Hydraulic Road Disc Brakes: Interbike 2010 Edition

Sorting through the Interbike 2010 coverage (and post coverage), one can pull a few different threads together to weave a more complete vision of the Bliggity Blog ROAD BIKE OF THE FUTURE. In any event, a couple of interesting “proof of concept” type things popped up…as well as the first, full-fledged, market-ready framesets it would seem.

Let’s start with the disc-ready framesets, because that is probably the most exciting – or certainly the most important in terms of reasonable disc-ready bikes getting to market. There are now two bikes out by the Volagi company, which it appears was started by two engineer types who left Specialized. I assume they are in Northern CA as the pictures on their site are straight out of Sonoma County – Geysers and Pine Flat would be my best guess. Volagi seems to be aiming for the high-end endurance/Gran Fondo market opened by Specialized’s Roubaix and Cannondale’s Synapse lines a few years back. Here is the Venga SL model, shown at Interbike:

via procyclingnews.com

There are many great things about these bikes even apart from the disc brakes; the quick rundown would be:

– full carbon construction

– taller headtubes for comfort and position, without having to resort to crazy high post or a riser stem

– BB30 bottom bracket

– cool looking cantilevered seat mast design that probably offers a supple ride

– integrated fender mounts

– ability to run most any size tires without worrying about clearance

In short, you’ve got all of the features that are becoming standard for high-end carbon frames (and presumably this could quickly include a tapered steerer setup as well).

Then, of course, you’ve got the disc brakes:

That fork in particular seems really nice. Would love to know about how it works in practice, as the road disc skeptics usually argue that standard forks can’t handle the torque from braking down at the tips. More on this to follow…

So, what else do you need?

  • hydraulic discs
  • shifting options that work with hydraulic
  • fork (and frame) redesign that can take advantage of the options opened by hydraulic discs

I’ll take each in turn in the posts to come!

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White Bikes of the Future

photo via Cyclingnews.com.

Nice shot here of David Moncoutie in the Vuelta this week. He’s riding the crazy new high-end Look bike (which I believe is the 695). Yes, the bike is white. However, this time I’m highlighting the Look for another reason: it takes us closer to what I believe is the BIKE OF THE FUTURE!

The basic trend is system integration of all sorts. This is not shocking – it has been going on for a number of years now, and Cannondale has even used the “system integration” moniker for quite some time. Look now takes this further, with the combination of integrated crankset/bb, stem, and integrated seat mast.

You buy this bike as a module (which Look calls a “pack”):

What are the next steps toward the kind of bikes we will be seeings ten years from now? As the frequent readers of BB (reader??) might guess, an immediate addition would be hydraulic disc brakes. It cries out for them, in fact. Take a look at the profile shot:

Not very hard to imagine those brake calipers removed from the bike. Maybe a large rear disc caliper mount (large meaning triangulated) down there at the chainstay/seatstay junction. And, picture a fatter, or at least deeper, bladed carbon fork with an integrated caliper mount at the end. Perhaps a shift as well to MTB-style through-axle fork/hub interface (like Rock Shox’s Maxle Lite, but smaller for road)

So, now you just need some very simple, single-purpose hydraulic brake levers up on the bars. And, you still need to buy your own bars…but it’s hard to imagine something that taste-based and unique ever going away.

Next step – and this is the BIG one – is a move to internal gearing. Electrically actuated internal gearing. Think Shimano’s Di2 wires and battery, but only running to the rear hub. You’ve now dropped the front and rear derailleurs, cables/housing, cassette and double rings from the equation. You have a single cog on the rear (attached to the Rohloff-like internal hub…with maybe 16-18 gears eventually), a single chainring mounted to the integrated crankset, and a couple of tiny shift actuator buttons OR maybe integrated buttons like on Di2. But, even Di2 now has the “remote shifter” button option – that is, a shift button that can be placed on top of the bars.

In this new bike purchasing paradigm, you have two major costs:

1. Frameset module/pack like you see with the Look 695. You buy the correct rough size and then custom tune the stem and integrated seat mast to your size and comfort level.

2. Wheelset. These are complicated, but integrated. Big ass hubs for large axle (in the front), disc brake rotors and mounts and a very expensive rear hub with the internal gearing. Deep carbon rims, designed without a braking surface (you’ve got disc brakes, remember), probably tubular (because you don’t have to worry at all about overheating rims and melting glue from braking).

What else do you buy?

3. Handlebars

4. Hydraulic calipers, levers and rotors

5. Saddle

6. Chain

7. Shift actuators, wires (if not built in to the frame), battery

Maintenance is almost nill – clean the chain, but that only involves spraying it with solvent, wiping clean, and re-lubing. You want to change bikes? Basically you only need to buy another module/pack from a different manufacturer; wheels and minor parts just shift straight across.

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