[CR] a little trick for Xmas - was Presta vs schrader extension of 700c vs 27'

From: "Mark Petry" <mark@petry.org>
To: <classicrendezvous@bikelist.org>
Date: Sat, 26 Dec 2009 17:52:10 -0800
Thread-Index: AcqGlzILXS2y3t28TB2tCbosWuuHDQ==
Subject: [CR] a little trick for Xmas - was Presta vs schrader extension of 700c vs 27'

David – my own experience runs counter to yours – if you put presta valves into shrader holes you’ll eventually get unrepairable tube failures at the valve hole. At 90 psi, the tube will creep up into any little space – and “POW”.

Years ago I turned down some neoprene plumbing washers to take care of rims that were sized for Schrader valves. I think they were Wobblers or something.

Now for the promised little trick. Find some leftover handlebar tape (not cloth, the modern foam stuff) or some wet suit closed cell neoprene material. Cut yourself a little “pillow” about ½” wide by 1” long and put it on the valve before you install it in the rim. This little thing will compress and support the valve.

See pic at http://tinyurl.com/yljkn6g

Mark Petry

Bainbridge Island, WA