Campag Super Record rear derailleur shifting woes

Discuss light weight issues concerning road bikes & parts.
c60rider
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by c60rider

lone wheeler wrote:
Sat Sep 15, 2018 5:47 pm
Here's one that's slightly related. Went on holiday for a couple of weeks and left the (Chorus 11sp) rear mech on the 3rd or 4th sprocket rather than leaving in the 12 sprocket. I know, my bad!

Anyway, the rear mech now won't shift down as it should. It feels like it's hitting something and when the wheel is out, you have to push it by the cage to release. It feels like it's catching on something and clicks. I can't see what's causing it. Really wierd as it was perfect prior to holiday. I'll take it to the local shop tomorrow and see if they can figure it out.

Anbody else had this?
If the mech is fine ie when the cable is undone it will manually push all the wsy in to the stop and when you release it goes back down it's obviously the shifter. But before you totally blame that does it shift up the sprockets but struggles to go down? I've had this issue in the past and it was a simple case of the shift cable starting to fray in the lever as I'd cabled it to the outside which we now know is likely to cause the fraying and eventual snapping of the cable. That's why Campag pre install inner cables across the shifter body. I'd just check that to start with.

by Weenie


lone wheeler
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by lone wheeler

Nope, I disconnected the cable from the rear mech and it's the mech. Something is clicking and stopping it from coming back down to the smallest sprocket. It's comes down with a shove but not freely. I've ridden Campag for years and never come across this before. Especially as before I went away it was perfect. It has to be something to do with having left it about three sprockets up for a long period although even this shouldnt really matter.

c60rider
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by c60rider

Calling @Calnago if anyone will give the best answer of things to consider on this it will be him :thumbup:

bm0p700f
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by bm0p700f

So with the cable disconected does the shifter realease cable as it should and pull it in both under tension.

Does the cable move freely on the housings?

Does the mech when not hooked up to the cable move freely.

If it is the mech it won't be because it has been left half way up the cassette. That is simply coincidence. I

lone wheeler
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by lone wheeler

Cable and shifter are both A1.

The rear mech does not move freely when everything is disconnected. Feels like something is catching inside the mech on about the third shift upwards. Very strange.

Mr.Gib
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by Mr.Gib

lone wheeler wrote:
Sun Sep 16, 2018 4:08 am
Cable and shifter are both A1.

The rear mech does not move freely when everything is disconnected. Feels like something is catching inside the mech on about the third shift upwards. Very strange.
lone wheeler, I have had this same problem, and so has a buddy of mine, and in both cases the RD was never left in a big cog. Mine was with 2017 Record, my buddy's with 2017 Super Record. Both happened mid ride. The RD just stopped moving to the smaller cogs. I was so pissed off that I dumped the bike at the LBS that sold me the group. When I picked the bike up I was told it was an easy fix. Something do do with the cage or H screw or B screw. The mechanic wasn't in so I couldn't get an accurate explanation. I saw the mechanic two weeks later and he couldn't remember what he did. The whole thing just seems so eff'd up. I am not a happy Campy customer. LBS let me down also.

IMO post 2015 11 speed Campy is over-engineered and contains a flaw in the design that prevents it the RD from indexing perfectly with certain cassettes on certain bikes. It just doesn't tolerate a range of settings well. Add in this mysterious jamming of the RD and it's two thumbs down from me for now (pun intended). I remain hopeful that I can get it perfect. Still it's noisy compared to Shimano and Sram, and bad shifter ergonomics. Now starting to wonder about chain length, maybe a link longer might help the shifting...and so it continues....
wheelsONfire wrote: When we ride disc brakes the whole deal of braking is just like a leaving a fart. It happens and then it's over. Nothing planned and nothing to get nervous for.

lone wheeler
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by lone wheeler

It's really strange. I can't see any of the adjustment screws that could possibly be touching anywhere that would stop the cage returning as normal. At least you got it fixed. I'll be making a trip to the LBS today to see if they can figure it out. Apart from this I've no complaints with Campag and I've used their stuff for over 25 years.

Confession though, I did hire a bike in Mallorca a few weeks ago rather than take my own which I normally do and it had Shimano Ultegra Di2 on it. Admittedly, I thought it was really good and for a die-hard, lifelong Campag fan, that hurts lol.

bm0p700f
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by bm0p700f

I'm really confused. The lbs fixed the problem but your unhappy with them because you want the mechanic to have total recall two weeks later. Also as it was a simple fix I struggle to see how this is a design flaw. My experience of setting up campagnolo drivetrains is they are not cassette or bike dependent so long as you are within the manufacturers specifications for the drivetrain and using a compatible cassette i.e campagnolo or miche.

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Calnago
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by Calnago

So if I’m understanding you correctly, even with the rear derailleur cable completely removed from the derailleur, it wont settle into its most outer position? Something has to be catching on one of the pivot points but I have no idea where or what that could be. The cage wouldn’t have anything to do with that movement. And whether the derailleur was left on the largest sprocket or the smallest or any sprocket in between wouldn’t affect anything either. I think I’d have to see it and play with it in person to come up with anything definitive.
Other than that I love the post 2015 Campy stuff. I’ve set it up to work perfectly with every cassette that is compatible with it, from 11/23 all the way up to 11/29, and the various cassette combinations in between. And love the front shifting so long as it’s set up perfectly, which is a very different process than pre 2015 stuff. Much prefer the ergonomics over the other groups too. Sorry I don’t have an answer for why your derailleur isn’t working. Sounds broken, but I don’t understand how it could be so difficult to pinpoint where the problem is if you have it in your hands. Let us know what the bike shop says. Curious.
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bm0p700f
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by bm0p700f

I take you have unwind the limit stop to see if it mives into the smallest cog.

I had a bike in yesterday with new super record 12 speed. It would not drop into the smallest cog. The problem the hanger was bent. After straightening and setting up again it was fine.

lone wheeler
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by lone wheeler

Correct Calnago, Honestly, I've tried all of the above. It was working perfectly before we went on hols. Sorry Calnago, not the cage, the actual body of the mech. The cage is fine. Limit stoppers etc not been altered or moved.

lone wheeler
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by lone wheeler

Just back from the LBS and my favoured mechanic was scratching his head and seemed to remember seeing this previosuly on a SR mech. Eventually they received a replacement from Campagnolo but they didn't say what the issue had been. Apparantly it took a long time too. Looks like i'll be buying a new mech!

lone wheeler
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by lone wheeler

Quick question and I probably won't go down this route but would a 11sp speed Potenza rear mech work with the 11sp Chorus shifters? The shifters are around 3 years old.

Mr.Gib
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by Mr.Gib

bm0p700f wrote:
Sun Sep 16, 2018 7:20 am
I'm really confused. The lbs fixed the problem but your unhappy with them because you want the mechanic to have total recall two weeks later. Also as it was a simple fix I struggle to see how this is a design flaw. My experience of setting up campagnolo drivetrains is they are not cassette or bike dependent so long as you are within the manufacturers specifications for the drivetrain and using a compatible cassette i.e campagnolo or miche.
What about a note on a workorder so the clerk can inform me or so the mechanic can remember? If it is an easy fix it would be nice if I knew what it was so I can fix it on the road instead of getting stuck with half my gears. Totally unprofessional. Yes I am unhappy.

Spoke to another shop and they are also having issues with indexing. Nobody wants to admit there is a problem. Campy fans have loved the idea that somehow using Campy is a sign of higher cycling status and to acknowledge any issues undermines that feeling so no one is willing. I am starting to think the emperor has no clothes. And here's another one - 12 speed campy is noisy.

FYI when I am free to choose a bike (not hammerfest, wet, or gravel) I always grab the bike with Campy - it is just so aesthetically beautiful - love it :noidea:
wheelsONfire wrote: When we ride disc brakes the whole deal of braking is just like a leaving a fart. It happens and then it's over. Nothing planned and nothing to get nervous for.

lone wheeler
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by lone wheeler

New Chorus rear mech ordered. Calnago, do you want me to post you the defunct one to see if you can figure out the issue? I know you like a good fettle!

by Weenie


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