Kyle Brooks wrote:
No problem whatsoever - your local bike shop should have little adapters that fit into the rim's valve hole -- it's like a little aluminum "sleeve" and acts like a shim. Cheap and effective.
responding to John Barron: >> >> Is there any problem using innertubes with presta valves on rims that have >> larger valve holes intended for Schrader valves? >> At the risk of imprisonment for heresy, I've used three different methods successfully: the adapters Kyle cites, rubber wiring grommets, which are much more trouble, and just plain running naked. Most current presta tubes seem to have a big enough metal seat for the valve stem that they work fine, but no guarantees. I do screw on a retention nut, but I do that on Presta rims, too, to keep the stem from moving around when I'm pumping up the tube. Oh, and one somewhat less successfully: with rims with a pretty wide channel, I've occasionally ground off the sides of an appropriate washer whose center was presta-appropriate, and either glued it in, or let the rim tape hold it in place. Bit more of a pain, with few benefits.
harvey "scrounge" sachs
mcLean va