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There are no stupid questions? Well, maybe this one...(7 posts)

There are no stupid questions? Well, maybe this one...Macho Man Savage
May 23, 2003 5:51 AM
Total newbie question so feel free to mock me.

Inner tubes - what's the deal with sizes? I ride on 700 x 23C tires. Can I use tubes that are 700X19/20 (no C - not sure what the C means). I'm sure this is a stupid question but whatever - any help would be great. Thanks.
There are no stupid questions...PaulCL
May 23, 2003 6:07 AM
The tubes are fine to use in 700x23's. The "c" means centimeter, I think.

I take it you are a WWF fan. Is Randy still wrastlin' these days??? Is the Hulkster still around??
Actually, "C" doesn't mean centimeterAllUpHill
May 23, 2003 7:41 AM
The letters A, B, or C, were originally used to indicaite various rim widths. More on this at http://www.sheldonbrown.com/tire-sizing.html.
Actually, "C" doesn't mean centimeterMacho Man Savage
May 23, 2003 7:49 AM
So I assume that with all tubes in North America - or at least most - it's given that it's a C?
I thought it stood for "Clincher"... (nm)Matno
May 23, 2003 12:06 PM
That's what you thoughtKerry
May 24, 2003 4:24 PM
But you thought wrong. Back in the day, a common touring setup was a 650B. Clincher. Check out the Sheldon Brown explantion.
re: There are no stupid questions? Well, maybe this one...ukiahb
May 23, 2003 8:15 AM
I remember reading a post here that said undersized tubes would deflate faster when punctured....makes sense...was also from a reliable source. If true, this could be bad news if you were moving fast...