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PostPosted: Sun Sep 29, 2013 9:52 pm 
Dirt Disciple
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Joined: Tue May 14, 2013 8:00 pm
Posts: 42
Location: Cill Chainnigh
Hi Guys,

There is a wheelset for sale I am interested in. The hubs are Campagnolo with an 8-speed Campy cassette.

My bike (a late 1980's Bianchi Specialissima) is equipped with a 7-speed Shimano SIS 105 down tube shifters and mechanism and with a freehub Uniglide rather than a cassette. I would like to swap the wheels, but not sure how to make things compatible. If I get an 8-speed Campagnolo down tube shifter, will the 105 rear mech be compatible?

Thanks for any suggestions.


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PostPosted: Sun Sep 29, 2013 10:39 pm 
Retro Guru

Joined: Tue Jun 03, 2008 4:31 pm
Posts: 740
If you ignore the indexing it should be fine. Have a look at Sheldon Brown , try "cassettes" then spacings crib sheet.


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PostPosted: Sun Sep 29, 2013 10:59 pm 
retrobike rider / Gold Trader
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Location: Bristle
http://www.ctc.org.uk/cyclists-library/ ... s/shimergo


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PostPosted: Mon Sep 30, 2013 6:24 am 
Dirt Disciple
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Joined: Tue May 14, 2013 8:00 pm
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Location: Cill Chainnigh
cce wrote:
http://www.ctc.org.uk/cyclists-library/components/transmission-gears/derailleur-gears/shimergo

Wow, that is some reading, thanks :).


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PostPosted: Mon Sep 30, 2013 2:03 pm 
rBoTM Winner
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Joined: Tue Apr 25, 2006 12:06 pm
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Location: Vienna, Austria
Alternatively you could try to find a Campagnolo wheelset with a 7sp cassette freehub.


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PostPosted: Mon Jan 20, 2014 9:42 pm 
Dirt Disciple
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Joined: Tue May 14, 2013 8:00 pm
Posts: 42
Location: Cill Chainnigh
Hi Guys,

An update on the subject and one more question...

I just bought a new wheelset for the bike with the 7400-series Shimano Dura Ace hubs (are they good by the way?). I was told that the freehub body has external and internal threads for the cassette fitting and there is an old 8-speed shimano DA cassette at present on it (I assume it is the Hyperglide vesion).

The question I have - will my current rear derailleur be compatible with the cassette (currently 7-speed freewheel). I believe I need a new 8-speed shifter?
Other solution would be to install a 9-speed cassette, but then again, I would need to get a shifter to match. Is my thinking right?

Here is a photo of the rear mechanism:
http://farm6.staticflickr.com/5514/9252 ... 4b39_b.jpg

Thanks again.


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PostPosted: Mon Jan 20, 2014 10:00 pm 
rBoTM Winner
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Joined: Fri Nov 16, 2012 2:38 pm
Posts: 302
Location: West Dorset
Shimano and Campagnolo 7 speed spacing is the same and I have used a 7 speed Shimano HG cassette with Campagnolo 7 speed Syncro indexing very successfully all winter. If you can get a 7 speed Campy cassette and a spacer to fit onto your 8 speed hub then you ought to be able to index properly with the current Shimano 105 rear derailleur that you already have.

Check which freehub body you have here -

http://branfordbike.com/articles/casset ... s-pg60.htm


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PostPosted: Mon Jan 20, 2014 10:09 pm 
rBoTM Winner
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Or by reading the CTC Shimergo article if Campy 7 speed, Shimano 7 speed and Campy 8 speed are all 5mm spacing then you should be able to set your derailleur to operate on 7 of the 8 sprockets on the Campy cassette that comes with your wheels. So either choose the top 7 or the bottom 7...tell your friends you've got a spare sprocket!


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PostPosted: Mon Jan 20, 2014 10:12 pm 
Dirt Disciple
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Joined: Tue May 14, 2013 8:00 pm
Posts: 42
Location: Cill Chainnigh
Penfold6290 wrote:
Or by reading the CTC Shimergo article if Campy 7 speed, Shimano 7 speed and Campy 8 speed are all 5mm spacing then you should be able to set your derailleur to operate on 7 of the 8 sprockets on the Campy cassette that comes with your wheels. So either choose the top 7 or the bottom 7...tell your friends you've got a spare sprocket!

Thanks.

The wheels come with an 8-speed Shimano cassette (I didn't go for the Campagnolo set), so I believe it has different spacing to my 7-speed Shimano shifter?


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PostPosted: Mon Jan 20, 2014 10:21 pm 
rBoTM Winner
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Joined: Fri Nov 16, 2012 2:38 pm
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Location: West Dorset
Seweryn wrote:
Penfold6290 wrote:
Or by reading the CTC Shimergo article if Campy 7 speed, Shimano 7 speed and Campy 8 speed are all 5mm spacing then you should be able to set your derailleur to operate on 7 of the 8 sprockets on the Campy cassette that comes with your wheels. So either choose the top 7 or the bottom 7...tell your friends you've got a spare sprocket!

Thanks.

The wheels come with an 8-speed Shimano cassette (I didn't go for the Campagnolo set), so I believe it has different spacing to my 7-speed Shimano shifter?


Yes, you'll need an 8 speed shifter or fit a 7 speed cassette on the 8 speed freehub.


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