Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: Notesfiles $Revision: 1.7.0.10 $; site uiucdcs Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!ihnp4!inuxc!pur-ee!uiucdcs!blanken From: blanken@uiucdcs.CS.UIUC.EDU Newsgroups: net.bicycle Subject: Re: Orphaned Response Message-ID: <38200057@uiucdcs> Date: Fri, 8-Nov-85 15:01:00 EST Article-I.D.: uiucdcs.38200057 Posted: Fri Nov 8 15:01:00 1985 Date-Received: Sun, 10-Nov-85 10:08:15 EST References: <10700003@hpltca.UUCP> Lines: 15 Nf-ID: #R:hpltca.UUCP:10700003:uiucdcs:38200057:000:621 Nf-From: uiucdcs.CS.UIUC.EDU!blanken Nov 8 14:01:00 1985 Okay. Let's get some background first. The metal rollers were the first edition. They were constructed with the idea of durability. It wasn't until after the advent of tough polymers that someone got the bright idea to construct them with PVC. The motivation was to reduce cost for the consumer. Tangible differences?(besides cost?). Smoother ride with less noise. Some advocates of Alloy drums might also be inclined to say that they produce a quality ride when a turbo fan is added for resistance, better than PVC. The effect is the same, only the alloy is much smoother. Eric Blankenburg U of I, Urbana