Today, i broke the presta valve on my inner tube when pumping it up. i yanked the pump off (at an awkward angle) and it broke at the base.
what i mean by "at the base" is that the twisty thing that sits on the thin bit of metal (the bit you have to undo), along with the thin bit of metal that you push in to release the air, broke off, leaving only the fat bit behind and part of the thin bit still inside the fat bit but now both are the same level. (still with me?... well, i don't know how else to explain it)
but then i noticed that this didn't make any difference at all.
my tyre didn't go down and i can even pump it up still, because when i put my pump on it still pushes the thin bit in (the bit that is left). so i just put the cap back on.
so it got me wondering. why do they bother to put the twisty thing on in the first place? why not just level the fat bit and the thin bit off the same, and put the cap on it?
what i mean by "at the base" is that the twisty thing that sits on the thin bit of metal (the bit you have to undo), along with the thin bit of metal that you push in to release the air, broke off, leaving only the fat bit behind and part of the thin bit still inside the fat bit but now both are the same level. (still with me?... well, i don't know how else to explain it)
but then i noticed that this didn't make any difference at all.
my tyre didn't go down and i can even pump it up still, because when i put my pump on it still pushes the thin bit in (the bit that is left). so i just put the cap back on.
so it got me wondering. why do they bother to put the twisty thing on in the first place? why not just level the fat bit and the thin bit off the same, and put the cap on it?