looks like it is there to solve the problem of Italian threaded fixed cups that are always unscrewing themselves
andrei padlowski
brooklyn, ny
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From: "Leonard Diamond" <leonarddiamond(AT)verizon.net>
Date: Tue, 08 Feb 2011 21:46:49 -0500
Subject: [CR] Legnano bb question
http://search.bikelist.org/
Noodling around ebay I came across an auction of a repainted 1960's Legnano. The third to last photo is of the bottom bracket and it shows a nut and bolt on the underside of the drive side. I was wondering if someone could tell me what it is for?
http://tinyurl.com/
Thanks!
Len Diamond
Ridgewood, New Jersey USA