Originally Posted by
70sSanO
I’ve used presta for years and just picked up a wheelset with Shrader holes.
There are some knurled presta locknuts that have a shoulder that is supposed to fit into the larger Shrader hole. Just thread them on the presta valve. They are still in the mail, but 10pcs for $10 seemed like a cheap, easy fix.
John
This. I have a bag full of these presta nuts designed for schrader holes. I think they come standard issue on Continental tubes.
I have no idea how well they work, I've never tried running presta tubes in a schrader hole.