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Presta rims drilled for schrader

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Presta rims drilled for schrader

Old 07-18-18, 08:35 PM
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brian3069 
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Presta rims drilled for schrader

Just realized someone had drilled out the valve holes on a bike I bought a few days ago. Does this weaken the rims, are they OK to ride.





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Old 07-18-18, 08:41 PM
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Presta Valve Savers
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Old 07-18-18, 09:23 PM
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The rims will be fine. Do get some of the valve savers that DrIsotope linked to.

It is common for touring riders to use rims drilled for Shrader valves. With the valve savers, they can then use presta valve tubes but switch to Shrader tubes if that is all they can find.
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Old 07-18-18, 09:35 PM
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Yes, save the prestas!

I know that hole looks to be about the size of the Lincoln Tunnel, but it shouldn't compromise the strength of the rim. There are about 100 million single wall rims out there with that sized hole in them doing OK.
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Old 07-18-18, 10:27 PM
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Alright, valve savers it is. Thanks for the help.
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Old 07-19-18, 08:10 AM
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or just use schrader tubes...
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Old 07-19-18, 08:33 AM
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The whole Idea of a schrader drilled rim with a presta insert is versatility..
to use what tube you can find..

FWIW, Schwalbe P/V tubes include a ring nut that is wider & stepped ,
to center the stem in the S/V hole..
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Old 07-19-18, 08:34 AM
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Whichever you do, check the holes for roughness and burrs. With Presta or Schraeder, you do not want rough surfaces or attached aluminum chips that could come into contact with the rubber if the inner tube. Use a rattail file or somilar to smooth and clean it.
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Old 07-19-18, 08:54 AM
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Originally Posted by Road Fan View Post
Whichever you do, check the holes for roughness and burrs. you do not want rough surfaces or attached aluminum chips that could come into contact with the rubber if the inner tube. Use a rattail file or similar to smooth and clean it.
was gonna suggest that too. good ideas. I have a round file I use in conjunction w squared of flat ones. regardless, I also put a dab of paint around the inside edge as well
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