New Shimano Di2 Sneak Peek

http://www.bikeradar.com/road/gallery/article/shimano-dura-ace-di2-9070-sneak-peek-34036/1

That new rear derailleur is pure sex…

Nothing about TT / tri set-ups. Looks like the new batteries are designed to be completely internal. Wire junctions @ HB are much cleaner now as well.

where the hell is the rest of the RD? my god…

Impressive work from Shimano.

I’ve heard that it (and new mechanical DA) will also work on a 10-speed cassette, but I’m not absolutely sure of this.

Cog spacing and cog width is the same as 10 Speed. The chains are apparently very similar. Wayne Stetina bike’s (here and here) had a 10 speed cassette with the new 9000.

http://www.roadbikeaction.com/contentimages/2012%20Tour%20of%20Calif/Tech/10speed.jpg

"Although the group is rumored to be 11-speed (11-speed is stamped on the chainring) Wayne only had a 10-speed cassette on his. This must mean that the cog spacing remains the same, with the overall width of the cassette and freehub body increasing, otherwise the 11-speed shifters would not have worked with a 10-speed cassette. "

What is the “optional layout” on the 12th slide? Isn’t that showing the TT configuration? If so, looks like rounded bar end shifters, but, I cannot really tell from the pic.

Yeah, I saw that. But now I’m reading on a new post on bikerumor that it’s 11 speed only. So now I don’t know …

A bit better overview with details on the aerobar shifter (that now work with Ui2 with the updated wiring) options are here, here and here.

“Sprint” shifters for the bar ends:

http://fairwheelbikes.com/cycling-blog/wp-content/uploads/2012/05/TT-TRI-shifter-sw-9071.jpg
As well as two button shifters:

http://fairwheelbikes.com/cycling-blog/wp-content/uploads/2012/05/Products-tt-tri-shifter-r671.jpg

i posted these links to the campy vs. shimano thread earlier:

http://velonews.competitor.com/…-new-dura-ace_221948

http://www.bikerumor.com/...o-dura-ace-unveiled/

the bikerumor article has nice pictures.

I think they should have rolled it out with midgets and a miniature Stone Henge… Missed a prime marketing opportunity there!

“It’s really about options,” says Eric Doyne, Shimano’s North American PR manager. “So much of what Shimano’s doing by increasing gear options, mounting options and shifter location options, we’re really trying to accommodate as many people as possible.”
…well, except for the option to use any other current model of chainring besides ours, of course, since we decided to piss on 20 years worth of bolt circle standards.

“It’s really about options,” says Eric Doyne, Shimano’s North American PR manager. “So much of what Shimano’s doing by increasing gear options, mounting options and shifter location options, we’re really trying to accommodate as many people as possible.”
…well, except for the option to use any other current model of chainring besides ours, of course, since we decided to piss on 20 years worth of bolt circle standards.

That’s why he’s the “PR” Manager…

new Di2 is said to be lighter than mechanical 9000 including the battery. Impressive as hell

I can’t wait for the new TT shifters. No need to cannibalize a Ui2 shifter. Those shifters can be cheaper too. Would the new 5 port junction compatible with the Ui2?

I can’t wait for the new TT shifters. No need to cannibalize a Ui2 shifter. Those shifters can be cheaper too. Would the new 5 port junction compatible with the Ui2?

+1 and for the internal battery. Just hope both are Ui2 compatible.

I’m pretty sure everything on the new DA and Ui2 is mix and match. Old DA Di2 is still an orphan.