HOT: Active* forum members generally gain 5% discount at starbike.com store!
Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Articles FAQ Contact About




Post new topic Reply to topic  [ 11 posts ] 
Author Message
PostPosted: Thu Jun 26, 2014 1:11 pm 
Offline

Joined: Thu Aug 16, 2012 1:22 pm
Posts: 124
Location: UK - Hertfordshire
As above. Had a funny one the other day and it now seems to be persistent. When changing down from say the third or forth cog up from smallest on the rear block, the chain jumps all the way to the smallest ring. I have re-indexed the gears and they change perfectly otherwise, but the shifter seems to clatter and pop down the smallest cog from the 3rd/4th one as detailed above.

Think the rear mech is fine, but I suspect it's an issue with the ratchet mechanism inside the shifter. I have adjust cable tension etc, but any tighter and it puts the gears out of sync and they rasp like hell. So like I said they are indexed perfectly.

What do we think?

_________________
2012 Canyon Ultimate AL 8.0


Top
 Profile  
 
PostPosted: Thu Jun 26, 2014 2:08 pm 
Offline
User avatar

Joined: Fri Dec 11, 2009 10:38 pm
Posts: 1069
Location: Toronto
What model and year of shifter?

Obviously a serious problem, but more info would help for suggestions.

_________________
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


Top
 Profile  
 
Posted: Thu Jun 26, 2014 2:08 pm 


Top
  
 
PostPosted: Thu Jun 26, 2014 2:33 pm 
Offline

Joined: Tue May 23, 2006 9:39 pm
Posts: 306
i had a few mishaps with Campy SR11 shifters...but i found that i didn't make sure the hoods were on correctly. a little misaligned and it could throw the shifting off a bit. there's a little rubber nub that protrudes out that i didn't secure. just a thought.

_________________
- Parlee Z5 SLi + DA9070 + Enve 3.4 Tune/Dash hubs
- Independent Fabrication Ti FLW + Campy SR11 + Enve 3.4 CK hubs


Top
 Profile  
 
PostPosted: Thu Jun 26, 2014 4:45 pm 
Offline

Joined: Fri Feb 18, 2011 8:33 am
Posts: 86
Without stating the obvious, are you not shifting down through all of the ultrashift range i.e. 4 cogs, rather than one?
I would be very surprised if the shifting is good on the upshift and bad on the downshift.


Top
 Profile  
 
PostPosted: Fri Jun 27, 2014 12:09 am 
Offline

Joined: Thu Aug 16, 2012 1:22 pm
Posts: 124
Location: UK - Hertfordshire
bikerjulio wrote:
What model and year of shifter?

Obviously a serious problem, but more info would help for suggestions.




Well I got the bike in 2012 so I'm guessing sometime then. It's Athena 11 speed. It was working perfectly last week and for two years it so. It's rab fink developed this issue in the past week :(


kode54 wrote:
i had a few mishaps with Campy SR11 shifters...but i found that i didn't make sure the hoods were on correctly. a little misaligned and it could throw the shifting off a bit. there's a little rubber nub that protrudes out that i didn't secure. just a thought.



I will look at this but I haven't changed anything of fiddled with the hoods of late...

bontie wrote:
Without stating the obvious, are you not shifting down through all of the ultrashift range i.e. 4 cogs, rather than one?
I would be very surprised if the shifting is good on the upshift and bad on the downshift.


Not sure what you mean? I think you mean this - I am clicking it once rather than pushing it all the way across to multi shift, yet it's still jumping down four cogs or so.


Sent from my iPhone using Tapatalk

_________________
2012 Canyon Ultimate AL 8.0


Top
 Profile  
 
PostPosted: Fri Jun 27, 2014 1:22 am 
Offline
User avatar

Joined: Fri Dec 11, 2009 10:38 pm
Posts: 1069
Location: Toronto
Ok the mechanism is called an "escape" system with one click at a time for upshifts.

Yours sounds to be broken.

Campy's answer is to replace the body. This is $76 + shipping.

http://www.bikeman.com/LD8527.html

_________________
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


Top
 Profile  
 
PostPosted: Fri Jun 27, 2014 10:21 am 
Offline

Joined: Thu Aug 16, 2012 1:22 pm
Posts: 124
Location: UK - Hertfordshire
Thanks. Mine is the downshift that's broken. Also thinking of it, it only clicks once per downshift anyway it's not possible to 'multi downshift'. You can multi shift up through the gears but not down. I am thinking it's an internal issue with the ratchet mechanism inside which affects the downshift. Unusual how it changes down the first three/four biggest cogs ok, but then the next *click* it jumps the last few cogs all the way to the smallest ring.


Sent from my iPhone using Tapatalk

_________________
2012 Canyon Ultimate AL 8.0


Top
 Profile  
 
PostPosted: Fri Jun 27, 2014 10:38 am 
Offline

Joined: Mon Dec 05, 2011 10:21 am
Posts: 24
Sounds like shifter but you can tell by
Shifting into the biggest cog on the rear,
Backing off the derailleur cable and pulling about as much cable through the shifter then nip up on the mech,
Now you will have the excess hanging out of the shifter body,
Now tie a 1kg weight on to this cable,
if the weight cant be lifted while pedaling the bike and wont shift in to the 11 then it is the rear mech spring.
If the rear mech has the strength to lift the weight then it is shifter.


Top
 Profile  
 
PostPosted: Fri Jun 27, 2014 2:23 pm 
Offline

Joined: Fri Feb 18, 2011 8:33 am
Posts: 86
Lewis wrote:
Thanks. Mine is the downshift that's broken. Also thinking of it, it only clicks once per downshift anyway it's not possible to 'multi downshift'. You can multi shift up through the gears but not down. [snip]
Sent from my iPhone using Tapatalk


Yes you can.

"EXCLUSIVE ULTRA-SHIFT™ MECHANISM: 3-sprocket upshifting, and 5-sprocket downshifting in one single stroke."

Anyhow, if one click downshift results in 4 sprocket move, there is probably something wrong.


Top
 Profile  
 
PostPosted: Fri Jun 27, 2014 2:57 pm 
Offline

Joined: Sat Jul 29, 2006 2:36 am
Posts: 1160
Location: UK
bontie, Athena 11 speed is Power-shift. It was only Ultra-shift in 2010.

Lewis, it's still under warranty.


Top
 Profile  
 
Posted: Fri Jun 27, 2014 2:57 pm 


Top
  
 
PostPosted: Fri Jun 27, 2014 10:10 pm 
Offline
User avatar

Joined: Fri Dec 11, 2009 10:38 pm
Posts: 1069
Location: Toronto
Lewis wrote:
Thanks. Mine is the downshift that's broken. Also thinking of it, it only clicks once per downshift anyway it's not possible to 'multi downshift'. You can multi shift up through the gears but not down. I am thinking it's an internal issue with the ratchet mechanism inside which affects the downshift. Unusual how it changes down the first three/four biggest cogs ok, but then the next *click* it jumps the last few cogs all the way to the smallest ring.


Sent from my iPhone using Tapatalk


That's an upshift. Like when you go to a higher gear. It's called upshifting.

_________________
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


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 11 posts ] 


Who is online

Users browsing this forum: Bing [Bot], Google Adsense [Bot], TimmS and 54 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. campag centaur right shifter spring

in Road

Monkeyboy3333

2

149

Wed Jun 18, 2014 11:12 am

graeme_f_k View the latest post

There are no new unread posts for this topic. SRAM crank extraction woes, lockring comes out

in Road

n808

5

375

Tue May 27, 2014 8:44 am

Andrew69 View the latest post

There are no new unread posts for this topic. Campy Shifter Help

in Road

NGMN

1

396

Mon Oct 28, 2013 4:45 pm

stella-azzurra View the latest post

There are no new unread posts for this topic. Felt shifter hoods?

in Road

Lucas1234

1

352

Tue Jan 21, 2014 12:34 pm

theremery View the latest post

There are no new unread posts for this topic. SRAM Red - 2012 - Broken Shifter

in Road

rijndael

10

1202

Sun Sep 15, 2013 12:32 pm

rijndael View the latest post


It is currently Mon Sep 01, 2014 9:01 am

All times are UTC + 1 hour




Advertising   –  FAQ   –  Contact   –  Convert   –  About

© Weight Weenies 2000-2013
hosted by starbike.com


How to get rid of these ads? Just register!


Powered by phpBB