Specialized Allez/Mavic CXP22 inner tubes?

edwardmlyte

Which inner tubes do I need to buy? Evans cycles informs me they have "Standard presta valve".

So looking on wiggle do I want these
http://www.wiggle.co.uk/continental-qua ... nner-tube/

or these
http://www.wiggle.co.uk/continental-qua ... nner-tube/

And what type do I need?
Presta 42mm 650x18-25 Race 26
Presta 42mm 700x18-25 Race 28
Presta 42mm 700x25-35 Cross 28
Presta 42mm 700x28-37 Tour 28 SL
Presta 42mm 700x32-47 Tour 28

Don't want to ride and then have a long walk home. I'm guessing I should have a practice at swapping the tubes at home before risking it all out there...in the wild.

danowat

These > Presta 42mm 700x18-25 Race 28

edwardmlyte

Thanks. Out of interest, how did you find that out?

Eyon

presta - type of valve
42mm - length of valve
700 - diameter of wheel (700c etc)
18-25 - diameter of tyre (23c 25c etc)
Race - Marketing BS
28 - no idea...

secretsam

Spesh tubes are the most common, but personally I can't abid them 'cos I always break the valves

But that may just be my pumping technique :oops:

simon_e

Eyon wrote:

28 - no idea...

Inches.

Race 28 is yer standard middling inner tube for 28" AKA 700c wheels and tyres. The name indicates weight, with heavy to light: Tour > Race > Race Light > Supersonic.

http://www.conti-tyres.co.uk/conticycle/tubes.php

I found the valve on Specialized's standard tubes (32mm) to be too short for my track pump and RS10 rims. I like Schwalbe, though I'm sure Conti are fine too.

Getting the hang of wheel & tyre removal and refit at home when relaxed in is a very good idea.

edwardmlyte

Ah ok cool. Thanks all. So the same inner tubes should fit on my girlie's specialized globe vienna 2.

Cheers all.