Ciao.
I have always had lock nuts with Presta valve inner tubes on my Giordano road bike, but there are a few guys I know who take them off. I understand that there is a chance that you can overtighten a lock nut and therefore irritate the tube in a way.
Do you leave lock nuts on and why? Have you experienced any advantages & disadvantages of having a locking nut?
There are pros and cons to each valve system. as for the Presta the lock ring is a Pro. it keeps stem in place should the tire become to low to push the pump valve on. Great feature! Finger tight is all u need to do once tire is inflated. For this reason I prefer schreader tubes with this type of stem also
There are two kinds of people in the world, "Those who help themselves to people, and those who help people!"
(05-17-2021, 02:12 PM)ManBearPig Wrote: Thank you @Painkiller @Jesper
along with Jesper and painkillers response, I have seen people really torque these more than they should and they start to rip the valve and then complain that their tires keep going flat, so the only disadvantage I see is that. and then there is if it gets loose. rims are drilled to let the valve through easily so there is a little play in them. if you don't have the nut tight on the rim then the valve stem will rattle around the rim and it gets kind of annoying. like Jesper said, he uses two, this will keep that rattling from ever happening and I agree with doing it.
"Steel is real."
- IDK, some guy.
I find it to be very useful.
I would imagine they are very useful, but I've gotten pinch flats despite them being there and fully secured.
In my experience, they're definitely useful for holding the valve in place when inflating the tube. Used properly/intelligently, I can't see any practical disadvantage to them.
Lock nuts are useful. You can put them inside the rim, when the hole is too big.
I bought some spare tubes for my bike, in sealed packages. My bike came with Schrader valves. I did not know the new tubes had Presta valves until I opened the first package. I carry one of these tubes as a spare, for when I have a puncture. Because the hole is too big, I put the lock nut inside the rim, to stop the tube blowing out through the hole, or being cut on the edge of the hole.
For those that don't know, I am being light hearted. But the story is true. It is a way to use tubes with valve stems too thin.
On the serious side. I sometimes use motor bike tubes in my bicycle. I like the lock nuts on motor bike tubes.