Re: [CR]Rear spacing: using a 120 rear wheel in a 126 spaced frame

(Example: Framebuilders:Rene Herse)

Date: Sat, 21 Jan 2006 13:49:13 -0500
From: <oroboyz@aol.com>
References: <BAY21-F203C47BC5364473A12A58FB51E0@phx.gbl>
In-Reply-To:
Subject: Re: [CR]Rear spacing: using a 120 rear wheel in a 126 spaced frame
To: classicrendezvous@bikelist.org


<< .... I would like to double up my old 76 Paramount 27" wheels which are 120, in the 126 spaced Vent Noir that I am building. The actual measured difference seems more like 4mm or so and the dropouts dont pull in much when I clamp down the QR. My eyeball says they seem to stay parallel....>>

Patrick:

It's probably just fine doing that.. 2 mm per side certainly won't hurt anything. The older bikes with indentations in the chain stays sometimes do not pul together symetrically, but the alignment and chain lines, even on pretty fancy bikes, was often not so hot anyway so the tolerances might have been sloppy to start with.

To reset the drop out width correctly (using vintage style tools), you would need to completely pull the bottom bracket out, then use a Campy straight edge (part of tool kit!) and squeeze in the stays until they were the new 120 width (using the straight edge accross the bb shell outer faces and inside the dropouts.) 2-3 mm per side won't hurt anything in a steel frame IMO, specially if you have 16.5" or longer stays.. (Not all of us agree on this last part but that's what makes the world go round..)

Dale Brown cycles de ORO, Inc. 1410 Mill Street Greensboro, NC 27408 USA 336-274-5959 http://www.cyclesdeoro.com http://www.classicrendezvous.com Giant, Specialized, Orbea, Bianchi, Felt, Litespeed, Landshark, Colnago, Townie and other exotica. National Bicycle Dealers Association Board member

-----Original Message----- From: Patrick Lay <p8705@hotmail.com> To: classicrendezvous@bikelist.org Sent: Sat, 21 Jan 2006 12:05:13 -0600 Subject: [CR]Rear spacing: using a 120 rear wheel in a 126 spaced frame

Hi all: The heading says most of it. For reasons having to do with not modifying some nifty short reach calipers I would like to double up my old 76 Paramount 27" wheels which are 120, in the 126 spaced Vent Noir that I am building. The actual measured difference seems more like 4mm or so and the dropouts dont pull in much when I clamp down the QR. My eyeball says they seem to stay parallel. Advice here pro and con would be appreciated. All my other wheels are 700c and the alternatives (dropbolts , filing etc.) also have their drawbacks. Thanks from Patrick Lay in Chicago

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