Re: [Bulk] Re: [CR]Wired-on vs. clincher


Example: History:Ted Ernst

Date: Mon, 23 Jul 2007 11:09:54 -0400
From: dima <dima@rogers.com>
To: "ternst" <ternst1@cox.net>
Subject: Re: [Bulk] Re: [CR]Wired-on vs. clincher
In-Reply-To: <00a401c7ccde$305ee580$0300a8c0@D8XCLL51>
References: <BAY141-F25D45274B9B1437E52A01DBFF60@phx.gbl> <3.0.6.32.20070722163144.01332260@mailhost.oxford.net>
cc: classicrendezvous@bikelist.org

Hi,

Monday, July 23, 2007, 12:01:46 AM, Ted Ernst wrote:
> Well, I guess I should put my two cts. worth in.
> The word clincher is tricky.
> They had "clincher" type tires in the 1890's.
> The wood rims were routed out and the tires had a sort of circumferential
> notch/groove that held the tire in place as the tire had a matching profile
> to size that was a male female type "hook" or groove.
> I don't know if all the tires at that time were wire bead or only rubber and
> fabrick.
> For almost a hundred years the Euros had "clincher"tires that had no wire
> bead but clinched the rim notch to hold the pressure and position.
> Many of these old type tires had about a 1/2" flap on each side that lay
> across the rim bed and protected the tube from nipple heads.It was a finger
> pinching job as the tire was pulled and stretched over the rim into position
> one side at a time with the tube inside.
> Later these tires would in our time be called hook edge bead tires and had a
> wire bead.
> This was prewar and is today.
> Before the war the wired on I think were named because of the bead
> construction but were straight side rims without hookedge rims or tires.
> It has now being used as a generic term for non sew-ups.
> The cruiser bikes still are straight side rims as are the 26x1-3/8th and
> 1-1/4 sizes for our use, and many of the Fench stock metric sizes, et., etc.
> Cauition must be used when straight size rims are fit with hook edge bead
> tires as most will creep off the rim and "Thar she Blows!".
> Many straight side tires can be fit into hookedge bead rims but it takes
> general experience knowledge or experimentation to know this, and I don't
> think the johnny come latelys 20 years ago in Bicycling mag had that depth
> of research.
> If I'm wrong, not having the article, I 'll eat crow now. If I'm not wrong,
> then i'll crow about it now, too.
> OK you pundits, time to chime in.

Thanks for all the info. What you say above (about the danger of tires blowing off) is confirmed by Sheldon Brown - on his site, he says that modern hi-pressure tires, while they can be used on old wired-on rims, should not be pumped above 70-75psi.

Practically, last night I won the Dunlop special lightweight rims pointed to by Neil:

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ih=009&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=190131830443&rd=1&rd=1

Now, the question is what tires to get for these? Recommendations are very welcome.

--
Cheers,
Dmitry Yaitskov,
Toronto, Canada.