Campagnolo Gran Sport Crankset / Bottom Bracket Match Up

Replies to This Discussion

Permalink Reply by Moc Artsy on March 17, 2011 at 8:54am

Hi Sly,

I'm sure you've seen this:

http://www.sheldonbrown.com/bbtaper.html

Also, there is this discussion on one of the bike forums:

http://www.bikeforums.net/archive/index.php/t-648231.html

(Don't click on any highlighted words--they're ads).

 

I'm also attaching a 1983 Campagnolo cataolgue, just for kicks.

Attachments:

• catalog_18.pdf, 2.9 MB

Permalink Reply by SlyRed on March 17, 2011 at 9:19am

Between confusing posts, symetrical vs non-symetrical spindle length and JIS vs ISO taper I'm already wishing I would have bought an IRD clone of this crankset and I would have hard and fast specifications on what BB to use ;^(

 

http://store.interlocracing.com/irdderodocr.html

Permalink Reply by Moc Artsy on March 17, 2011 at 1:54pm

I would assume it's ISO, considering a Campy crankset of that vintage would have been JIS only through some kind of custom machining. As for symmetrical or non-, your double chainrings would call for a non. Now, what kind of frame is this for and how are your BB cups threaded? :-) V-O has had the Italian threaded cartridge BB on sale for a while now.

Permalink Reply by SlyRed on March 17, 2011 at 2:12pm

1973 Raleigh Competition (68mm bottom bracket shell, English threads) Unless I get serious recommendations to do otherwise I'm going to buy a 115mm sealed BB.

Permalink Reply by Moc Artsy on March 18, 2011 at 9:05am

Ah, yes. It did say that in your post, didn't it? oops. 115 sounds about right.