RE: [CR]Peanut Butter Wrench and Early SR Crank Bolts

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From: "Bingham, Wayne R." <>
Subject: RE: [CR]Peanut Butter Wrench and Early SR Crank Bolts
Date: Wed, 27 Feb 2002 19:35:40 -0500

Steve Freides wrote:
>It seems like the walls of the socket are just
>a little too thick

and Paulie Davis wrote:
>>I have had exactly this problem too. I have ordered Snap-On sockets, tried Sears too, and even bought the peanut butter wrench, all to no avail.<<

I got to thinking about this, since I couldn't recall it really being a problem, particularly with Campy cranks. Not to get too anal about it, but I did a little quick measuring of the options I have in the shop and this is what I found:

Campy NR 3-in-diamond crank arm retainer-bolt opening = 20.7 mm Craftsman 12 point 15 mm socket, outside diameter (OD) = 20.2 mm Park CCW-4 double-ended 14/15 mm ratcheting box-end wrench, 15 mm end (OD) = 20.4 mm Ofmega "peanut butter" wrench, 15 mm (OD) = 20.1 mm

So even in my limited research, I have three options that work.

Is this a common problem others have encountered? I seem to recall having the problem with other cranksets, but not Campy. Is it possible that there could be that much difference from crank to crank?

Wayne Bingham
Cold Falls Church VA