Bike Forums - View Single Post - Presta valve stems sans threads

08-15-23 | 09:32 PM

#16

FBinNY

Senior Member

Joined: Apr 2009

Posts: 39,897

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From: New Rochelle, NY

Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

Quote:

Originally Posted by KerryIrons

.....The pressure of the tube against the rim at the valve hole totally seals things. Worrying about this is a COMPLETE over think.

To be clear, and address what may be the OP's issue. It's not about water getting into the tire or tube area, which, as pointed out, is near impossible.

It's about water getting into a hollow rim. Still an over think problem, but at least we're overthinking about the same thing.

FWIW Aeons ago some rim makers fitted a brass ferrule at the valve hole, presumably to close the rim there. We don't see that anymore because it was found to be unnecessary.

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