Good News/Bad News: Di2 11-speed And Disc Brakes For 2013?

Cyclingnews is reporting today a number of insider rumors on the next iteration of Dura-Ace and Di2. Shimano might finally jump up to 11-speed cassettes, which is not that surprising given Campagnolo Some of this is the obvious stuff you might expect, namely that they will be “harmonizing” Dura-Ace with Ultegra Di2 so that the systems would be interchangeable and D-A would use the better wires and harnesses.

They note:

Indexing control will supposedly be moved to a front-derailleur-mounted microprocessor, turning the levers into ‘dumb’ switches that merely send binary signals – just like on the recently introduced Ultegra Di2.

What is interesting here is that this clearly sets the stage for a “controller” paradigm that we’ve been talking about here on BB: with the “brains” moved to the derailleur units themselves, the actuators on the bars (or elsewhere) do become “dumb” switches. As we’ve also been saying on BB, this frees up space in the levers and it appears Shimano will be using that space to integrate a disc brake option as well.

Sounds like the disc option would be mechanical in the 2012 year, but maybe hydraulic by 2013. Can’t wait to see what Shimano would do with a high-end road hydraulic caliper, though it sounds like another year or two before we see that.

The bad news in all of this, though, is what will become of Bliggity Blog once I can no longer pontificate about hydraulic disc brakes on a road bike. Maybe then I will move into advocating for internally-geared hubs on road bikes. Or, I could actually write more about the state of the world, the collapse of global capitalism and the future of market-based socialism. Time will tell….

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Ridiculously Complicated Fixes…: Wireless Electronic Brakes Edition

via BikeRadar.

Yes, it’s the stuff of potential nightmares: a wireless disc brake setup. As noted here on BB before (and many other places), we’ve kind of been down this road before in cycling, with the Mavic Mektronic shifting setup. Which was kind of a disaster/joke. And, no, it wasn’t a disaster because of the wireless shifting alone….but the wireless deal always seemed like a solution to a problem we never had. Shimano seems to agree, given that they have now released two, big dollar (even for Ultegra Di2) electronic shifting setups that use wires for shift “actuation” (and little motors to actually move the derailleurs; which may well be the “real” actuation, now that I think about it).

Electronic shifting seems fairly simple compared to braking. For one thing, the total force and energy needed to complete a shift (which is actually just the force needed to move a derailleur a couple of millimeters at a time) must be lower than pushing the disc pistons with sufficient force, right? So, if the biggest manufacturer of components in the world – with a massive R&D budget and all that – decides to not even bother with wireless shifting, why would anyone bother with wireless braking??

If it did work, though, what are the possible advantages of a wireless braking setup? I think there are two fundamental (and obvious) ones:

  • The simplest (potential) advantage: lack of cables/hoses (and needing to accommodate cabling in/around the frame). With wireless braking, the set-up work would be almost completely centered on the caliper. You would bolt on the caliper, do the adjustments and attach whatever pneumatic source is required for the actuation of the caliper. But, this is probably going to be a hydraulic setup, right? If so, you are not actually removing the hydraulic actuation process from the bike, you are simply moving it from the brake levers on the bars to the caliper area itself. So, running a hydraulic cable from the levers is only really adding the marginal increase in hosing (a couple of feet) and whatever amount of extra hydraulic fluid is in that hose. I can say, having just installed new caliper and levers on my MTB, that there really isn’t much fluid in those hoses (the inside diameter of hydraulic hoses, in other words, is quite small). Thus, I don’t see much advantage to removing the hoses, apart from freeing up one more (albeit fairly minor) parameter for frame designer, who would no longer need to think about internal routing, external hose mounts, etc.
  • The other potential advantage is reducing the complexity of the brake lever/actuator on the bars. If you only really need some kind of electronic device that measures how much a lever is being moved and translates that into an electronic signal sent to the caliper/receiver (which would translate the movement of the actuator into an analogous movement of the “real” brake), you don’t need much up there on the bars. This could very easily (I would assume) fit into the body of even an old-school, simple brake lever. I suppose you could even have multiple actuators (think brake levers on the bar tops of cross bikes, as currently used), allowing the rider to brake from almost any position. This last option is a bit more compelling…but, then again, it’s hard to imagine many more places on the bars from where I’d rather actuate the brakes.

As I think this through here, the wireless braking idea still seems like a big loser. Or, maybe just another ridiculously complicated fix to a non-problem that we didn’t really have. Given that we still don’t have a real road hydraulic disc option yet, let’s hope for the development of one over the next year or two. Once the “traditional” hose/line-actuated hydraulic setup has been refined, then maybe – maybe – the idea of a wireless braking setup would be worth considering.

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My Official Predictions for Apple’s iPhone Event on Tuesday

512 Pixels gets it just about right for me:

  • Apple will release something new that will be pretty good.
  • People will be disappointed, thanks to the insane rumor mill.
  • I will mark “All as read” in Google Reader after the event and order a new phone.

via 512 Pixels.

I’ve never had to bother with Mac rumor mill as much as in the run-up to the current iPhone product announcement. Truth is, I’ll buy WHATEVER the newest iPhone turns out to be (4S?, 5?) because I have no choice in it! My 3GS has been on borrowed times for a couple of months now – a very cracked screen that somehow has not continued to spread, yet still works; gobs of dust and gunk behind the glass (in large part from the replacement of the screen after cracking it two summers ago); and, the standard cracking on the black plastic case starting from the dock connector. While I’ve been qualified for months now for the subsidized upgrade to an iPhone 4, it seem stupid to pull the trigger until the newest revision comes along.

Thus, I’ve been a slave to the rumor mill, waiting for the “late summer” and then “early fall” predictions. Now my biggest fear is that the announcement will be made this week….but then the actual top-end phone (if Apple ends up doing a revised 4 AND and a new 4S) won’t be ready for purchase for another few weeks.

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