True or false ?

RandG

An inner tube can be damaged by lightly inflating it outside of the tyre .

felix.london

RandG wrote:

An inner tube can be damaged be lightly inflating it outside of the tyre .

:?

You should lightly inflate it before putting it in the tyre

cat_with_no_tail

felix.london wrote:

RandG wrote:

An inner tube can be damaged be lightly inflating it outside of the tyre .

:?

You should lightly inflate it before putting it in the tyre

This

What is your definition of "lightly" though?

For me, lightly is just so it takes shape.

RandG

Let me rephrase then, inflating the tube outside the tyre damages the tube, true or false ?

supersonic

As above, you are supposed to slightly inflate it outside the tube so make it easier to fit.

Inflate it too much and they will eventually pop, as it thins the rubber. But they inflate way more than you'd think, like rubber rings you see in swimming pools!

lostboysaint

Common sense just left.

nicklouse

RandG wrote:

Let me rephrase then, inflating the tube outside the tyre damages the tube, true or false ?

if you are in a pin factory then true.

otherwise false.

felix.london

nicklouse wrote:

RandG wrote:

Let me rephrase then, inflating the tube outside the tyre damages the tube, true or false ?

if you are in a pin factory then true.

otherwise false.

RandG

I know this comes over as looking obviously stupid, but I want to get opinions on this before I add to the story.

nicklouse

RandG wrote:

I know this comes over as looking obviously stupid, but I want to get opinions on this before I add to the story.

add away then as you will only get more of the same.

RandG

I recently received some tubes, on unpacking I thought I'd inflate a couple just to check the width compared to the ones I already had.

First one I inflated went very deformed, narrow in bits, mega fat in others, very strange shape :? Then I inflated another, very similar :? Then I inflated another couple, they were fine, so thought, inflate them all to see how they are, overall, of the ten I bought, four were very deformed :shock:


I emailed the company today about them, and in fairness to them they said they would replace the four deformed ones, however, it was him stating I have damaged them by inflating them outside the tyre :?

Can't say I have ever heard that before :?

lostboysaint

Of course you can damage them by inflating them outside of the tyre. Just don't pump them up much!!

felix.london

Seems way too complicated for me. This is how I do it;

1 - buy tubes

2 - put two tubes in Camelbak

3 - if I have a puncture I remove the tube and put in one of the tubes from Camelbak

lostboysaint

felix.london wrote:

Seems way too complicated for me. This is how I do it;

1 - buy tubes

2 - put two tubes in Camelbak

3 - if I have a puncture I remove the tube and put in one of the tubes from Camelbak

Thank f**k for that. Someone who's got it right. (If you have to have tooobs!!!).

nicklouse

RandG wrote:

First one I inflated went very deformed, narrow in bits, mega fat in others, very strange shape :?

sounds totally normal.

felix.london

felix.london wrote:

Seems way too complicated for me. This is how I do it;

1 - buy tubes

2 - put two tubes in Camelbak

3 - if I have a puncture I remove the tube and put in one of the tubes from Camelbak

Missed out step 4;

4 - when no tubes left, consider going tubeless...repeat from step 1

cat_with_no_tail

Why on earth would you inflate a tube outside the tyre to check width?

And yes, they'll be slightly deformed, the rubber will be slightly thicker in places. It wouldn't be a problem in the tyre as the tyre helps the tube to keep a uniform shape. But when you start inflating a 2.35" tube to 4-5" with nothing to retain the shape.......

nicklouse

do it do it........

cat_with_no_tail

I have to ask, because it's going to bug me otherwise.

What exactly did you *think* was going to happen?

cat_with_no_tail

nicklouse wrote:

do it do it........

hehehe.

I think I've got some old DH tubes in the garage somewhere. I can see a video of me "testing the width" by sticking one on a track pump going on youtube later on.

big boom!

DodgeT

Surely its about as silly as people buying/paying more for 29" tubes?!

cooldad

I wonder if we can blame Wiggle?

DodgeT

Probably.

The Rookie

I've found cheaper tubes nearly always inflate deformed, better ones (Conti/Schwalbe) usually only deform where the extra thickness is at the base of the valve stem.

Does it matter, no.

A Friend has a 36er and uses 29er tubes as 36er tubes weigh a lot (over 500g each) which means those 29er tubes are very over inflated, he's never had one let go though.

nicklouse

i fitted a 24" tube to a 26 as i picked the wrong one up.

RandG

nicklouse wrote:

sounds totally normal.

Really? so the ones that were inflated that weren't "deformed" are you suggesting they aren't "normal"

nicklouse

RandG wrote:

nicklouse wrote:

sounds totally normal.

Really? so the ones that were inflated that weren't "deformed" are you suggesting they aren't "normal"

nope.

tubes make all sorts of shapes when you inflate them, and I have most likely inflated more than you have.

it is rare to find some that make a dounut with just some waisting at the valve.

70\ʹspenguin

When i repair a tube i pump it up to ensure the hole is fixed and the patch can cope with the stretch. Surely this is how one usually checks the seal is complete? Surely the tyre manufacturers expect this also? All my tubes look like badly made sausages and ive never had one fail yet.

Surely your tyre guy is talking from his sphincter?

RandG

70\'sPenguin wrote:

Surely your tyre guy is talking from his sphincter?

He may well be, I'm still not sure, but as I said, he offered to replace the ones I mentioned, so I won't say anything further about his comments, nor would I name the company.

bennett_346

The Beginner wrote:

I've found cheaper tubes nearly always inflate deformed, better ones (Conti/Schwalbe) usually only deform where the extra thickness is at the base of the valve stem.

Does it matter, no.

A Friend has a 36er and uses 29er tubes as 36er tubes weigh a lot (over 500g each) which means those 29er tubes are very over inflated, he's never had one let go though.

A 36er?

70\ʹspenguin

http://www.flickr.com/photos/55831875@N03/7805059208

Toe clearance - not an option it seems. Why anyone would want one i dont know..........