Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: notesfiles - hp internal release 1.2; site hp-pcd.UUCP Path: utzoo!watmath!clyde!burl!hou3c!hocda!houxm!houxz!vax135!cornell!uw-beaver!tektronix!hplabs!hp-pcd!craig From: craig@hp-pcd.UUCP Newsgroups: net.bicycle Subject: Re: hub spaces Message-ID: <9300001@hp-pcd.UUCP> Date: Wed, 9-May-84 13:39:00 EDT Article-I.D.: hp-pcd.9300001 Posted: Wed May 9 13:39:00 1984 Date-Received: Tue, 5-Jun-84 08:50:10 EDT References: <283@wxlvax.UUCP> Organization: Hewlett-Packard Portable Computer Division - Corvallis, OR Lines: 18 Nf-ID: #R:wxlvax:-28300:hpcvre:9300001:000:1029 Nf-From: hpcvre!craig May 31 09:39:00 1984 5 speed spacing is 120 millimeters inside dropout to dropout 6 speed is 125mm. If you want to convert to 6 speeds in 5 speed spacing, you'll need a narrow ("ultra 6") freewheel and a narrow chain (Sedisport works well). If you want 6 speeds and don't want to get a new chain (or want seven speeds and a new chain) you have to spread the rear dropouts. No big deal but you may want to have a shop do it so they can make sure the dropouts are aligned and the rear triangle straight after spreading. According to something I read somewhere (you might check The Bicycle Wheel by Brant) wheels built to 5 speed spacing are 40% stronger than 6 spacing (because of the increased dish). This appears to be academic (immensilly powerful racers ride 6 speeds with no problam) through loaded tourers may want to think about it. If you race, most of the spares in the follow car are 6 speed spacing. Shimano makes some hubs which fit 6 speeds into 5 spacing by doing some juggling of the hub spacing. Craig Durland ...!hp-pcd!craig