Presta Valves without lock nut

[ColinJ]

I think the Presta valve caps might help to protect spare tubes while they are carried around rolled up but don't do much once the tubes are in use.

 

[Pale Rider]

Always use the lock ring.

Locates the valve nice and straight when changing a tube, and makes it easier to use a push on pump, which most track pumps are.

These have threads just no locknuts, I will be swapping them out shortly for slime filled anyway, rims are tubeless but looking on Schwalbe website the Smart Sams aren't

The carcase of the Smart Sams is not, strictly speaking, air tight.

They should still set up OK as tubeless, although I have a theory that sealant dries out faster due to evaporation.

Might be cobblers, but it doesn't matter if you use slime tubes.

 

[Deleted member 26715]

They should still set up OK as tubeless, although I have a theory that sealant dries out faster due to evaporation.

I was reading something last night about going tubeless & that was one of the points, it stated that the sealant would only last a couple of months before drying out. Not something I encounter with tubes, seems a more hassle than it's worth to me.

 

[fossyant]

Always use caps, but not lock nuts.

 

[Smudge]

Always use the lock ring.

Locates the valve nice and straight when changing a tube, and makes it easier to use a push on pump, which most track pumps are.

This is why i leave them on.

 

[Yellow Saddle]

Locknuts come come off the tubes immediately after the valve caps and follow them into the bin. Pointless junk.

I don't bother with them or valve caps. I feel a bit less of a slob after reading that others don't either.

Funny, I would never in a million years have put you two in the Extreme Weight Weenie category. At least you had the sense to not admit it in public and claim other reasons for your actions.

I suspect you both indulge in pink drinks too, when no-ones watching. Well, I'm watching you.

 

[Ian H]

A beginners' mistake is to screw the lock-ring up tight before inflation and thus trap the tube under the bead of the tyre at that point. More important on narrow rims.

 

[ColinJ]

A beginners' mistake is to screw the lock-ring up tight before inflation and thus trap the tube under the bead of the tyre at that point. More important on narrow rims.

I was guilty of that 30 years ago!

These days I leave the ring loose and push the valve body in before inflating the tube to make sure the tube is not trapped.

 

[Deleted member 26715]

Managed over 30 miles today across lots of different terrain & was not visited by the fairy whose name you shouldn't speak, as I went around the back of the house I heard the doorbell, nice Amazon lady had arrived with my slimed tubes, so after a shower & food I will be fitting those. Widest I could find were 2.20 the tyres are 2.35 hope they stretch & don't tear if punctured.

 

[Blue Hills]

The locknuts were once useful as spacers for toeclips. I haven't since found a use for them.

Handy for lifting a bottle cage above a clashing front mech mount.

 

[Blue Hills]

This is why i leave them on.

Me too. Can be a right old pain trying to get a pump on a tube without them.
Must admit i see anyone who leaves them off because of "the rules" or some crowd/club mentality they want to fit into as a bit of a ponce.

 

[Smokin Joe]

Me too. Can be a right old pain trying to get a pump on a tube without them.
Must admit i see anyone who leaves them off because of "the rules" or some crowd/club mentality they want to fit into as a bit of a ponce.

Who are you calling a big ponce, you little ponce?

 

[Dec66]

I'm going to defend the locknut.

It stops the valve sinking into the rim when tube is deflated and I'm attaching the pump.

So there.

 

[HLaB]

I think lock nuts hark back to days when engineering was less precise and valve stems could vibrate in the hole. I remove them and try to by tubes without them.

 

[Dogtrousers]

WTF is a "washer nut"? A washer is not threaded, and a nut is threaded. What kind of nonsense is this?

I always use both the lock nut and the valve cap*. Seeing that the nice people at the tube factory have given them to me, it would seem rude not to. I expect something mildly bad will happen to me if I don't use them, and I'm not going to risk finding out exactly what. They are to my valve stems as the ravens are to the Tower of London.

* until I lose them. Which is generally not a very long time.