Nightmare ride on perfect morning.

[betty swollocks]

Nightmare ride on perfect morning. Found out that both spare tube valves and the valve of on one installed on the bike are are of the removable core type, so when you try to unscrew your pump's screw on connector, the valves' cores screw out too. The result of this is rapid deflationsville and a long walk. I have never encountered removable core type presta valves before, I didn't even know they existed - until a few hours ago.

 

[raleighnut]

Nightmare ride on perfect morning. Found out that both spare tube valves and the valve of on one installed on the bike are are of the removable core type, so when you try to unscrew your pump's screw on connector, the valves' cores screw out too. The result of this is rapid deflationsville and a long walk. I have never encountered removable core type presta valves before, I didn't even know they existed - until a few hours ago.

At least they hadn't been filled with "slime" or some other puncture stopping gunk as the ones on my OH's Dawes Geneva were. When the core came unscrewed on 1 of them it went everywhere. Apparently according to a LBS they were introduced to allow the filling of inner tubes with this stuff, but this may be a myth/hearsay, bloody shock though.

 

[betty swollocks]

At least they hadn't been filled with "slime" or some other puncture stopping gunk as the ones on my OH's Dawes Geneva were. When the core came unscrewed on 1 of them it went everywhere. Apparently according to a LBS they were introduced to allow the filling of inner tubes with this stuff, but this may be a myth/hearsay, bloody shock though.

I assumed that was why.....thanks.

 

[i hate hills]

Bad luck with that. Nothing worse than a push home.

 

[simon the viking]

Nightmare ride on perfect morning. Found out that both spare tube valves and the valve of on one installed on the bike are are of the removable core type, so when you try to unscrew your pump's screw on connector, the valves' cores screw out too. The result of this is rapid deflationsville and a long walk. I have never encountered removable core type presta valves before, I didn't even know they existed - until a few hours ago.

I had exactly the same issue.... a few months ago..... They are the work of the devil..... Now I either buy a brand I know or open the box and check the valves.....................

 

[Saluki]

Bummer. I've never come across these sort of valves. I shall keep a look out to avoid them, thanks for posting.

 

[JasonHolder]

Bummer walking!
What name for us to avoid? Thanks

 

[raleighnut]

Bummer walking!
What name for us to avoid? Thanks

Clifford, Maxwell Prisoner No ************ Sir

 

[betty swollocks]

Schwalbes....for road bike 23's.

 

[screenman]

Why not screw it back in, must say I like the removable core for the reason quoted.

Must say I always nip them up when I fit the tubes, also all my pumps are push ons.

 

[jay clock]

I think Conti are these type and agreed a pain in the bum if you have a pump that involves screwing on at all, as the unscrewing does just that

 

[Deleted member 1258]

I think Conti are these type and agreed a pain in the bum if you have a pump that involves screwing on at all, as the unscrewing does just that

I'm not sure now but I think it might have been Conti that let a batch leave the factory without the cores tightened properly some years ago, caused a lot of us problems, if I find I've got one of these now I always take a pair of pliers to the core and make sure its tightened down as it should be, there's normally a pair of flat surfaces on them to get a grip on.

 

[betty swollocks]

I did, of course try to screw it back in!!
Hand-tight wasn't, unfortunately, tight enough.

 

[jefmcg]

I've had this happen with 16" tubes and a lezyme hand floor pump. Finger tightening did the job

 

[screenman]

I did, of course try to screw it back in!!
Hand-tight wasn't, unfortunately, tight enough.

That is odd, as to come out in the first place they would have only been finger tight. Next time if there is one a little bit of lick as a lubricant will help.