[CR] re : Panaracer Pasella 27x 1 1/4 sidewall blow-outs (AT) 50psi

(Example: Framebuilders:Cecil Behringer)

Date: Sun, 21 Mar 2010 17:48:51 -0700
From: "MNF" <emeneff@gmail.com>
To: classicrendezvous@bikelist.org
Subject: [CR] re : Panaracer Pasella 27x 1 1/4 sidewall blow-outs (AT) 50psi


Are you absolutely sure they are 27" rims ?

If they are the smaller 700c - well, there's your problem. Maybe compare with an unlaced 700c rim and see if your rims are the same outside diameter, or bigger.

At a shop I worked at we got a pair of Sun CR-18 rims that were marked 700, but actually were 27". Thanks, Sun.

You shouldn't get blow-off at such low pressures unless you are trapping the tube between the tire and rim. There are lots of videos available about tire changing online. A few of them are actually helpful <G>. Try the Park Tool site if you are unsure.

If worse comes to worse just toss those #@$%&! rims and buy some actual hook-bead 700's and then you won't have to deal with all the tire compromises and trials and tribulations that you've been suffering. Be done with it . . .

Mike Fabian
San Francisco, CA