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PostPosted: Fri Nov 18, 2016 12:14 pm 
Devout Dirtbag
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Joined: Mon Nov 03, 2014 4:41 pm
Posts: 123
Location: Oslo Norway
I am in need of a new bottom bracket for my Rossin Record, Super record equipped bike approx 1979/80 vintage.
A friend of mine has one axle marked 70ss but it measures 115,5 mm, It comes complete with cups which seems to be the older thick wall cups. I cant find any Strada (SS marking) BB axle of 115,5 mm in any of the Campa catalogs i have looked at.

Which group does this axle belong to?


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PostPosted: Fri Nov 18, 2016 2:09 pm 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 8663
Location: New Forest, UK
I wonder if it is for a Campag MTB chainset?


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PostPosted: Fri Nov 18, 2016 2:18 pm 
Retro Guru
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Joined: Sun May 05, 2013 12:12 pm
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Location: Bournemouth
The MTB ones I have are 124mm and 132mm. Which of course doesn't rule out that this one is for an MTB, but hopefully is useful nonetheless.


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PostPosted: Fri Nov 18, 2016 2:23 pm 
Old School Grand Master
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Joined: Fri Oct 14, 2011 8:41 pm
Posts: 8810
Location: Cumbria
if it was 115mm then it would be the standard NR italian strada double.

Shaun


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 Post subject: Re:
PostPosted: Fri Nov 18, 2016 2:54 pm 
Devout Dirtbag
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Joined: Mon Nov 03, 2014 4:41 pm
Posts: 123
Location: Oslo Norway
Nope, standard NR and SR axle for double chaining is 113 mm according to all my catalogs up to 85. Anyhow there is a reference in the 85 catalog regarding a +1 +1,5 axle, could it be one of those?


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 Post subject: Re:
PostPosted: Fri Nov 18, 2016 3:46 pm 
Devout Dirtbag
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Joined: Wed Oct 21, 2009 1:51 pm
Posts: 119
Location: Kingston
I agree with Shaun.

The axles got 2.5 mm longer after 1978 (+1 and +1.5 left and right). Later ones were stamped just 68-SS or 70-SS.

Thick cups with the rifling are consistent with this.

Give it a try.


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PostPosted: Fri Nov 18, 2016 3:54 pm 
Devout Dirtbag
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Joined: Mon Nov 03, 2014 4:41 pm
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Location: Oslo Norway
Ok Thanks, I will check my crank set for date, I assume they also changed the the crank to fit with the redesigned axle as well.


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PostPosted: Fri Nov 18, 2016 4:44 pm 
Old School Grand Master
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Joined: Fri Oct 14, 2011 8:41 pm
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Location: Cumbria
Just checked on Velobase and they think a standard NR italian bottom bracket axle is 115mm. Just out of curiosity what's stamped on the cranks?, presumably a number in a diamond.


Shaun


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 Post subject: Re:
PostPosted: Fri Nov 18, 2016 10:19 pm 
Dirt Disciple

Joined: Mon Aug 29, 2016 9:50 pm
Posts: 12
Thought I had just posted this - suspect it'll appear in a mo as a double post!

If it helps the 4th one down on the link below is 115.5, a 'new style. Gran Sport.

Lord knows how you do links so just cut and paste

http://www.minortriad.com/campagbb.html

I've a few bikes with Gran Sport chainsets and finding axles has been a nightmare. Nailed it now, found some and stocked up.


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PostPosted: Sat Nov 19, 2016 1:05 am 
Old School Grand Master
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Joined: Fri Oct 14, 2011 8:41 pm
Posts: 8810
Location: Cumbria
Iirc gran sport were black, they were slightly different and on occasion used by the guys running very short wheelbase or chainstays with little in the way of dents. There was a lot of mix and match going on back then :)

Shaun


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