I beleive (not sure) that the trough was only on Italian BBs to take up the 2mm wider shell spacing as BSC is 68 vice italian which is 70mm??
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-----Original Message----- From: firstname.lastname@example.org [mailto:email@example.com]On Behalf Of Tom Dalton Sent: Wednesday, August 15, 2001 10:48 AM To: firstname.lastname@example.org Subject: [CR]Interesting NR BB on Ebay.
Those with an interst in 60's and 70's Campy stuff might want to check out Ebay auction #1176856855. Does anyone have information regarding this unusual NR bottom bracket? It has thick-walled cups with the rifled spindle passage, like a normal NR, but the exterior surface of the fixed cup is flat, like a Record, GS, SR, etc. NR BBs normally have a "trough" machined on the face of the fixed cup. I assume this is a very early NR. Does anyone know when / how long they were made this way? Are all BB's like this pre-CPSC and for 120mm drivetrains? This is not the first NR that I've seen using this fixed cup, but I've only seen a couple of others.
Oh, yeah: no relation to seller, bidders, &c.