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PostPosted: Mon Jul 21, 2014 10:23 am 
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Joined: Mon Jun 23, 2008 8:52 am
Posts: 560
Sorry, if it has been discussed before.... 2015 Super Record mechanical component weights bellow.
I do not see any weight decrease comparing the current version. :noidea:

Shifters – 344g
Brake calipers – 122g (single pivot) and 155g (dual pivot)
Crankset – 620g (w/o connecting bolt)
Front Der. – 74g
Rear Der. – 161g
Casssette – 200g (11-27)

More details here http://www.bikerumor.com/2014/06/23/2015-campagnolo-chorus-eps-super-record-mechanical-tech-overview-actual-weights/


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PostPosted: Mon Jul 21, 2014 12:28 pm 
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Campy would seem to be going for little improvements in operation, rather than weight.

The writer of that piece seems not to know much about his subject. I picked out:

Quote:
The other big change is that the brakes get their dual-pivot design for improved power.

as though this was a new thing for Chorus.

Quote:
The bearings come stock on the crank spindle, which then press directly into the BB shell

In discussing the Ultratorque crankset.

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How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

http://www.youtube.com/watch?v=GekiIMh4ZkM


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Posted: Mon Jul 21, 2014 12:28 pm 


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PostPosted: Tue Jul 22, 2014 7:53 pm 
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Any word on a release date?


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PostPosted: Tue Jul 22, 2014 10:30 pm 
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October 2014


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PostPosted: Tue Jul 22, 2014 10:51 pm 
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Cheers. Just about to build a bike with Record, though not sure if I should wait (not for the upgraded group, but for the old stock to drop in price)


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PostPosted: Wed Jul 23, 2014 2:18 am 
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Pardon my gross stupidity, but this sentence in the "Bike Rumor" article struck me and I could certainly benefit from another interpretation: "Up front, the shifters use a new cam ratio for the derailleurs to work with the new designs." Does this imply that the new derailleurs require the new shifters, as well?

Thanks,
KAC


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PostPosted: Wed Jul 23, 2014 11:41 am 
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Here's the whole quote which i also had trouble with

Quote:
Up front, the shifters use a new cam ratio for the derailleurs to work with the new designs. One of the big questions we couldn’t wrap our heads around was how you’d use a taller lever on the front derailleur and have less shifter lever movement. The revised cam ratios pull far more cable per shift, so you get more leverage over the front derailleur with a shorter lever throw.


When it comes to leverage, there's no free lunch, so this doesn't really make sense. What's a "cam ratio" anyway in the context of a Campy shifter?
Campy have messed with FD's and left shifters once before with Quickshift. But it wasn't such a big change that there was still backward compatibility.

Writer nether sounds technically oriented or at all familiar with Campy, so we are going to have to wait for a more coherent explanation.

_________________
There's sometimes a buggy.
How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

http://www.youtube.com/watch?v=GekiIMh4ZkM


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PostPosted: Wed Jul 23, 2014 11:51 am 
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Velonews has this on the new FD which also makes no sense.

Quote:
The front derailleur now has a longer lever arm, just like Shimano’s 9000 group, which requires less force, and therefore less movement of the shift lever, to switch from little to big chain ring. The outer cage on the Super Record and Record front derailleur is made of carbon composite; the outer cage on the Chorus FD is aluminum.


http://velonews.competitor.com/2014/07/bikes-and-tech/reviews/first-ride-campagnolo-revolution-11-mechanical-groupset_336976

_________________
There's sometimes a buggy.
How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

http://www.youtube.com/watch?v=GekiIMh4ZkM


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PostPosted: Wed Jul 23, 2014 10:21 pm 
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Joined: Sat Feb 07, 2009 5:52 am
Posts: 244
I think they should have said that the lever arm on the FD is longer, but due to its orientation, its effective length changes during the stroke from small ring to big ring. The first part of the cable pull is acting on an effectively short lever arm, so it translates into a large displacement of the cage. As the lever swings down, it effectively becomes longer, allowing for reduced cable tension in order to move the cage that last bit over to the big ring.

In any case, it likely calls for slightly more cable pull at the shift lever, thus the incompatibility.


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Posted: Wed Jul 23, 2014 10:21 pm 


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PostPosted: Sat Jul 26, 2014 3:34 am 
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Quote:
The shell covers the backside of the bearings, which is why you’re seeing them without a seal here. They say it makes service much easier since you can just flush fresh grease in if you want.
The first sentence might imply there is a seal that you just don't see. And it's light oil, not grease. Crank weight without bolt? Huh.


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