Originally Posted by
Schwinn me
Here's probably a dumb question. I do not have a dedicated presta valve inflator, only have a couple bikes with presta's. I use those screw on adapters to use a schrader type inflator chuck. Is it acceptable to leave the adapter on and put a schrader valve cap on it or must you take it off. I've been taking them off. I bought a whole card of these adapters and was wondering if there is an "official" stance on this?
Leaving it on is a convenient way to make sure it's always around. Just don't forget to take it off and tighten the Presta locknut again after filling. Loose Presta locknuts can allow the valve to jostle open momentarily and lose air.