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Will I die? Got a free specialized tube with a new tyre but it's presta valve and my rims are schrader drilled. Would it work ok or do you need some kind of adapter/washer to make it fit snug?
It will work.
though you can get little reducer gromits if you are that fussed
as above, normally fine although you can geta grommit for the outer hole to hold the valve firmly.
Cool cheers, I was worried about the valve rattling around loads but should be ok for an emergency spare, I guess I could always wrap a load of tape around it to fill it out a bit.
small thing going into big hole - works.
big thing going into small hole - may struggle.
the tyre pressure will keep the valve in place once it's pumped up
as will the lock ring
as will friction
Schwalbe lockrings are designed to accomodate this.
Dont listen to any of the above. It will explode, and you will die.
HTH
Put an extra lock ring inside the rim to stop any chance of the tube expanding thru the gap and popping
hopester - what absolute first class bollox, that would never happen
The valve won't rattle around. People go on about stopping the valve moving but the valve does not move, the tube moves and takes the valve with it so you don't want to lock the valve down (unless you really like replacing tubes where the valve has torn out). It is a normal mod on a trials motorcycle running tubes to elongate the valve hole so that any tube movement can be accommodated and seen before damage occurs. I've always applied the same principle to any bike.
i put a presta tube into a schraeder drilled rim on my dh bike about 2 years ago,even have a reducer thing soemwhere but never got round to putting it in - it still works fine and ive just done a week in the alps on it 🙂
Cruzspackler Ive seen it happen. The same thing happens if you remove your rim tape
What dick removes rim tape unless you want punctures from the spoke holes?
Presta valves have no place in mountain bikes.
^even if you get them for free? 🙁
I have to admit I don't really see the point in presta valves but my pump will do both so I might as well use it if it's safe to do so, which it seems it is 🙂
hopester - cut the peurile insults and explain how a tube including a valve can come through a hole that is less than 10mm wide. even better - show us how it can happen. If it can surely tehir is a pic on the web you can back it up with.
Presta valves have no place in mountain bikes
Why ? They are on all my bikes ,The others are for cars and kids bikes.Joking apart its a pita swapping pump ends all the time so all my bikes have presta