I wish I could come to the cirque, but alas, time and money are tight... so I'll have to ask my Italian question here:
I am trying to determine the age of my Cinelli Supercorsa. Here are a few defining features:
- bought as frame/fork only, sandblasted. Had been modified a bit for 1970s NR equipment (braze-ons added, rear bridge replaced). - has "ears" on lugs - has steerer tube rifled at bottom (Columbus?) - has little hole for spring in right rear dropout (Campagnolo dropouts) - has 70 mm BB shell, but for some reason the seller (second or third owner already) thought the shell had been cut down from the wider 74 (?) mm shell. The serial number "6162" is stamped right on the edge of the shell, indicating that the shell used to be wider. Also stamped near the chainstay sockets is "R". - Oiler hole on top of BB shell - Fork accepts short reach brake. Top tube is level, so if the fork was replaced, it has the same geometry as the original.
The frame was sold as a 1957, but I wonder whether it isn't more recent. Obviously, dropouts sometimes crack and could have been replaced, etc. When did they last use the "ears" on the lugs? When did the dropouts with holes come out? When did they use the wider BB shells? When did Cinelli switch from Reynolds to Columbus tubing on their SCs?
Any help appreciated.
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Jan Heine, Seattle
Editor/Publisher
Vintage Bicycle Quarterly
http://www.mindspring.com/