Which Groupset?

Yes, the actuators need huge amounts of power, but CPU functions can be offloaded to one of the dérailleur units and use power from the big actuator batteries. If the lever throw×force will power the radio, the CPU blocks just have to listen for radio commands.

Apparently, piezo-power does work with push-button forces.

Rider input to a shift actuator is only about 5mJ, not sure what the conversion efficiency is with piezo electric generation. The raw conversion of strain into electricity in a crystal seems pretty high, much of the inefficiency seems to arise from the rectifiers and voltage conversion needed to couple piezo crystals to usable electronic devices, but even 10% end to end would yield 10mW for 50ms, which is probably enough.

The CPU would therefore logically be in a mech, to share the battery- front or rear I wonder?

SRAM prototypes clearly have a battery on each mech, to make it totally wireless. Having only one battery would require a wire between the two dérailleurs.

Also, the SRAM Patent documents seem to show a small primary cell (like a CR2032) in each lever body, although that might change.

Sorry- not clear, I didn't mean that the mechs would share a battery, but rather which battery (front or rear) the CPU would share.

As, I assume, whichever mech gets the CPU controls which mech you get to use last, as it were.

I think they are probably putting the CPU in the lever, with a primary cell to power it, but if they put the CPU in a dérailleur it would go in the rear one, since SRAM are all about 1×n drivetrains.

What is claris? Been looking at bikes and keep seeing it.

Decent enough?

8 spd entry level group that replaced 2300.

below sora

Scoble seems to like it and they've got the regular shimano brake lever gear changes like the levels above, as opposed to the campag style thumb shifters.

I only like it because it actually an improvement over the original, it doesn't feel as good as the higher end one (read - sloppy), but on a budget, it's decent.

Played with 6800 when going to lbs earlier, the brakes feel so good, do want

Thanks.

What is Clarice?

Not more than one generation from poor white trash.

it's the shoes what gives them away

http://www.bikerumor.com/2014/05/26/all-new-campagnolo-super-record-record-chorus-mechanical-groups-shift-into-action/

http://brimages.bikeboardmedia.netdna-cdn.com/wp-content/uploads/2014/05/2015-Campagnolo-Record-group-road-bike-drivetrain-600x148.jpg

http://www.bikerumor.com/2014/05/26/all-new-campagnolo-super-record-record-chorus-mechanical-groups-shift-into-action/

http://brimages.bikeboardmedia.netdna-cdn.com/wp-content/uploads/2014/05/2015-Campagnolo-Record-group-road-bike-drivetrain-600x148.jpg

the new crankset [in my opinion] looks even uglier than Shimano now

Looks like Campag have decided to go head-to-head with Shimano on ugliness

the new crankset [in my opinion] looks even uglier than Shimano now

Try to keep up :-)

I m not a pro... far away to be a pro... and in my last build I choose Campag (Athena, with chorus shifters) versus Shimano (I had the 6700 groupset on my previous bike) for three reasons:

1. Small hands.. I feel more comfy on Campag shifters
   
2. Did not like the feedback of the Shimano gear changes
   
3. Because the Campag crankset is such a nice part of the bike to watch at...
   

You choose a groupset base on personal preference, no explanation required.

http://www.bikerumor.com/2014/05/26/all-new-campagnolo-super-record-record-chorus-mechanical-groups-shift-into-action/

Repost

And not even a worthy one.

Literally a carbon copy of dura-ace

(sadly I can't take credit for that pun, borrowed from the comments)

Enough of campag yolo

Rediscover mountain biking, discover Di2! - YouTube

http://www.bikeradar.com/mtb/news/article/shimano-xtr-di2-electronic-shifting-comes-to-mountain-bikes-41184/

XTR Di2 Press Launch - YouTube