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These were original kit for my Koga at least (nice photo of broken down levers):-
http://cgi.ebay.co.uk/SHIMANO-DURA-ACE-EX-rare-downtube-shifters-FRICTION-/330462512794?pt=Cycling_Parts_Accessories -
Hi,
looking at this prompted me to look at my (as yet untouched) Koga project. It would seem I have the same bosses, which is bollocks given that I have sourced some NOS Dura Ace 7400 levers for the other/square type Boss.
Having done a bit of research, it would seem that they are both (contemporaneous) type A bosses but that they are commonly referred to as Type A/M5 (square which in 7400 anyway had a light alloy inner curved washer and always takes an M5 lever bolt) and type A/M4.5 (keyhole which in 7400 had a plastic inner curved washer and always takes an M4.5 lever bolt).
In terms of shimano model nomenclature the difference is SL-nnnn-FCAI (square) vs SL-nnnn-FAI (keyhole) see - http://velobase.com/ViewComponent.aspx?ID=40e79148-190e-440a-8cab-4bbb67c4ecad
Doesn't solve the problem but maybe gives a direction.
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My wife has moved on from her Raleigh Ventura step through frame which is 49.5cm Centre to Top and 531 but the rear is spaced at 126mm, it takes a 27.0 seat post and would benefit from a paint job. Let me know if this is of any interest. It is in Herne Hill if you want to take a look.http://www.stickerland.co.uk/img/Raleigh.jpg
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Hi, I would very much appreciate your help. I am looking for a small steel road bike or Frame and Forks, 48 49 or 50 Cm, for my wife. She currently rides a 49 Cm aluminium frame Langster SS but wants to give this a go. Reynolds 531 or a tubing of similar properties would be ideal. Being not too far from Herne Hill would also be an advantage. Thanks.
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Dibs please: (68) SHIMANO 105 8-speed levers for braze-on mount excellent £10