Explain this...............

Jay dubbleU

Wednesday am - visit from the PF, get to work change tube, ride home

Thursday am - tyre flat - pump it up as I don't have a spare tube ride to work, pump up again, ride home, strip the wheel, put the tube into the kitchen sink, not a bubble - replace tube, pump it up again

Friday am - flat again, pump it up ride to work, lunchtime go out and buy a new tube - go to ride home tyre is still fully inflated ?

Any ideas? My conclusion is that as I made a joke about LiT in her role as the deflation fairy
she has put a curse on my rear tube

downfader

Careful or people will start shouting "burn the witch" :shock:

(I dont think she is, honest!!)

NGale

I have images of the scene from The Holy Grail where they want to burn the witch

doog442

buy new tyres...kevlar

problem sorted

saves members of the public reading pointless posts

Jay dubbleU

Tyres are fine - I'm running on Schwalb Marathons - mystery is the tube :shock:

doog442

new tubes..

schwalbe do some decent tubes...mine have been solid

downfader

Jay dubbleU wrote:

Tyres are fine - I'm running on Schwalb Marathons - mystery is the tube :shock:

Valve failure. Have had it happen myself. Take the old tube, inflate it and put a tight elastic band around the valve or clamp it off. If it doesnt deflate over a couple of hours its the valve.

el_presidente

Are they Mavic tubes ?

chuckcork

how high did you pump it before immersing in the tub? Likely a slow flat...

glauciaregina9

downfader wrote:

Jay dubbleU wrote:

Tyres are fine - I'm running on Schwalb Marathons - mystery is the tube :shock:

Valve failure. Have had it happen myself. Take the old tube, inflate it and put a tight elastic band around the valve or clamp it off. If it doesnt deflate over a couple of hours its the valve.

+1 ... if it aint the tube then it has got to be the valve ...

Jay dubbleU

I agree - it appears to be the valve but the mystery is in that case why did the stay up? Having thought about this the only thing I can think is that I must have got dirt in the valve which prevented it closing properly and that soaking it in the sink go rid of it - its stayed up ok ever since :roll:

downfader

Jay dubbleU wrote:

I agree - it appears to be the valve but the mystery is in that case why did the stay up? Having thought about this the only thing I can think is that I must have got dirt in the valve which prevented it closing properly and that soaking it in the sink go rid of it - its stayed up ok ever since :roll:

Could well be that.

Or someone let your tyres down. Has LiT been following you to work? Have you been stalked?

prj45

Think yourself lucky.

I got a puncture yesterday in my car tyre (well, it was flat, there was a broken off screw in it, and although it didn't break to the inside of the tyre the air still got out), missus drove on it a bit, result, 130 squid for a new one, apparently driivng on it whilst flat might destroy the side wall.

Should we be replacing our bike tyres if we run on them whilst flat? They've got side walls right?

tardington

You can sort of mangle them up a bit. Pushing them is generally okay though... I'd be more concerened about the wheels. :shock:

greg66_tri_v2.0

prj45 wrote:

Think yourself lucky.

I got a puncture yesterday in my car tyre (well, it was flat, there was a broken off screw in it, and although it didn't break to the inside of the tyre the air still got out), missus drove on it a bit, result, 130 squid for a new one, apparently driivng on it whilst flat might destroy the side wall.

Should we be replacing our bike tyres if we run on them whilst flat? They've got side walls right?

Car tyre sidewalls are structural. Pretty sure bike ones aren't.

I've done the run flat thing too, and written the tyre off. When the bloke took it off, he showed me that there was a huge amount of rubber dust inside the tyre. Apparantly that was from the sidewall - it's a sort of surefire sign (not sure if by design) that the sidewall is now fooked.

Never seen such a thing on a bike tyre...

always_tyred

Well Watson, however improbable, if the air is not coming out of a hole in the tube, it must be coming out of the valve.

A valve is just an o-ring pressed against a seat. During periods of tyre deflation, it is possible that grit or dust came betwixt the o-ring and the seat, and that it has taken some time to clear the surfaces sufficiently for the tube to remain inflated.

downfader

Always Tyred wrote:

Well Watson, however improbable, if the air is not coming out of a hole in the tube, it must be coming out of the valve.

A valve is just an o-ring pressed against a seat. During periods of tyre deflation, it is possible that grit or dust came betwixt the o-ring and the seat, and that it has taken some time to clear the surfaces sufficiently for the tube to remain inflated.

I love you, Holmes. I love you so very much.

always_tyred

Greg66 wrote:

Never seen such a thing on a bike tyre...

You've not cycled far enough on a flat then.

I once, on a set of rims I didn't much value, cycled (slowly) about 3 miles on a flat front clincher. Precisely how I managed to stay upright, I don't know.

Pretty sure that I fooked the tyre doing this.

Jay dubbleU

Well did 35km on it today no problem - must have been muck in the valve i guess - one thing I did notice - four dumped tubes at various places - take 'em home guys :roll: