Inner tube replacement

[curlymedic]

Sorry if its a daft Q. Can I replace 700x42/47 innertube with 26x1.50 tube or 700 (28-38c) inner tube? Many thanks.

 

[mjr]

26x1.50 (559-42 in modern?) probably not.

700 (28-38c) (622-28/38) might just work if fitted into a 42mm tyre but it may lose pressure faster because it'll be stretched thinner. It'll probably get you to a shop that sells a better fit.

What size is your tyre? 622-something?

 

[CXRAndy]

The only downside to using an inner tube for a smaller width tyre is when inflated the inner tube skin is stretched thinner to fill the tyres capacity. Thinner might puncture more often.

You cant really use different diameter inner tubes on different wheels

 

[mjr]

You cant really use different diameter inner tubes on different wheels

Oh yes you can!</panto> Wider 622mm tubes often have narrow 630mm sizes on the label as compatible. There are limits, though, and 559 to 622 (26x decimal to 700c) is a bit too far IMO.

 

[weareHKR]

Not quite sure why you would want to do that?
26 is definitely too small, the only size I would risk to use on a 700C wheel is a 27.5

 

[vickster]

Sorry if its a daft Q. Can I replace 700x42/47 innertube with 26x1.50 tube or 700 (28-38c) inner tube? Many thanks.

How fat are the tyres?
do you already have the narrower tube...if not just buy the correct size for a fiver or less