Retrobike Forum Index

It is currently Tue Jul 16, 2019 2:09 am

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 8 posts ] 
Author Message
PostPosted: Thu Jun 27, 2019 9:53 pm 
Old School Hero

Joined: Wed Dec 11, 2013 9:41 pm
Posts: 178
I have a 7 campy cassete I want to upgrade to 8 speed , 32 cogg. I know 7 to 8 speed is not an issue as spacing is the same (I've got 8 speed shifter already), but I'm having difficulties finding a 8 speed campy or compatble cassete with biggest coog 32t. I've seen the miche ones, but it seems only go up to 28. I'd appreciate any suggestion... Thanks!


Top
 Profile  
 
PostPosted: Fri Jun 28, 2019 12:12 am 
r.B.o.T.M. & P.o.T.M. Winner
r.B.o.T.M. & P.o.T.M. Winner
User avatar

Joined: Thu Nov 22, 2007 10:51 am
Posts: 2887
Location: Camel Land
I maybe wrong but Campagnolo 8speed only did a max of a 26T cog ?


Top
 Profile  
 
PostPosted: Fri Jun 28, 2019 8:19 am 
Old School Hero

Joined: Wed Dec 11, 2013 9:41 pm
Posts: 178
Thanks, that's the issue... Do not any compatible brand go up to 32 ? Old Claris ? anyone has any experience ? 42-26 is a little hard to me...


Top
 Profile  
 
PostPosted: Fri Jun 28, 2019 8:37 am 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 9452
Location: New Forest, UK
One solution is to put on a Shimano MTB rear mech. However you need to work through the Shimergo info to get shifter compatibility.

Alternatively, swap chainset to get smaller rings. You could immediately go to 39T inner (assuming it's a Campag chainset)


Top
 Profile  
 
 Post subject: Re:
PostPosted: Sat Jun 29, 2019 5:55 pm 
Old School Hero
User avatar

Joined: Wed Oct 21, 2009 1:51 pm
Posts: 207
Location: Kingston
Which hub do you have?

Campagnolo 7 speed cassette hubs are very rare, they have a short freehub body that will only take 7 cogs.

Campagnolo did make cassettes for 8 speed with cogs up to 30 for their ATB range, they do occasionally come up on eBay. Perhaps put a wanted ad in the MTB section.


Top
 Profile  
 
PostPosted: Sat Jun 29, 2019 7:43 pm 
Old School Hero

Joined: Wed Dec 11, 2013 9:41 pm
Posts: 178
Thanks, I do not know much about campy, I've always been more fan of Shimano.

I was not aware I can not swap the 7 speed cassette with an 8 speed one. So end of the story, I'll go slower ...

This is the hub and cassette, and the Olmo finishing the restoring process... Group is 91-94, with older cobalto's.


Attachments:
20190627_182752.jpg
20190627_182752.jpg [ 232.88 KiB | Viewed 633 times ]
20190629_202815.jpg
20190629_202815.jpg [ 221.79 KiB | Viewed 633 times ]
20190629_202658.jpg
20190629_202658.jpg [ 470.31 KiB | Viewed 633 times ]
Top
 Profile  
 
 Post subject: Re:
PostPosted: Sat Jun 29, 2019 8:57 pm 
Old School Hero
User avatar

Joined: Wed Oct 21, 2009 1:51 pm
Posts: 207
Location: Kingston
Aha, it looks like you have an 8 speed hub with a 7 speed cassette packed out with an extra spacer, that will make it easier!

You will probably find however that the rear derailleur can only cope with a 26. There were touring and MTB derailleurs back in the day - I have a Campagnolo Icarus on a bike of mine with a 28 sprocket. A short arm Campagnolo MTB derailleur looks very similar to the road ones so can be a good solution for keeping a bike looking right.

That's a nice looking bike by the way :D


Top
 Profile  
 
PostPosted: Mon Jul 08, 2019 1:00 pm 
Dirt Disciple

Joined: Sun Nov 16, 2014 10:06 am
Posts: 55
Location: Dorset
I believe you can get way with 28t sprocket so long as you don't cross chain big to big. I am about to try this on my Athena groupset. I made a bigger cassette by taking a Sram 8 speed cassette and substituting campag spacers between the sprockets which worked adequately, but not as good as my Campag cassette.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 8 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 11 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:  
cron

About Us

Follow Retrobike

Other cool stuff

All content © 2005-2015 Retrobike unless otherwise stated.
Cookies Policy.
bikedeals - the best bike deals in one place
FatCOGS - Fat Chance Owner's Group

Powered by phpBB® Forum Software © phpBB Group