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Having got a flat on the commuting bike last night, I discovered that my front wheel has a presta only hole in the rim - its a Mavic 231 (i think) rim brake type.
Can I drill it wider - is this sensible?? or will I have a taco crisp before I know it?
Ta
You can drill it and it'll be fine, but why not just buy a Presta tube?
It's fine, 8.5mm drill bit & clean the burrs off afterwards.
Stan's always recommend drilling the outside of the rim for their kits and I've not heard of many deaths as a result.
Having said that, can I have your bike?
How do you think they do it at the MAVIC factory?????
@br - because all my other bikes are running schrader valves 🙂
@goldenwonder - ta - off to the cellar with a drill this evening then
I've been doing it for YEARS. I've honestly lost count of how many rims I've drilled. It's a tiny fraction if metal that's removed and as long as you file it smooth after there's simply no issue. 🙂
I thought only bso`s came with a schrader valve ?
How do you think they do it at the MAVIC factory?????
This
Just don't go at it like a demented driller killer from Evil Dead and you'll be fine