Presta/Schraeder conversion

[Profpointy]

Ah that's why they have a flange on 'em - what a good idea!

I'd also better check I've screwed the thingies in right way up too

 

[Andy_R]

I'd also better check I've screwed the thingies in right way up too

Calling @Fnaar ..........Yup, check your flange is the right way up

 

[Profpointy]

Calling @Fnaar ..........Yup, check your flange is the right way up

I've actually learned something from cyclechat today, rather than fannying around wasting time on it like I usually do

 

[GrasB]

Converting from the wide Schraeder to the smaller Presta is easier and require no technical skill at all

Mavic do "Shims" that seat the valve

You can also get other "sleeves"

These work by supporting the valve joint in a double walled rims and should be used to reduce strain in that area due to stem & tube movement.

Alternatively just buy Schwalbe Presta tubes as their "retaining nut" already has a flange that will seat it in a Shhraeder hole

These are the best method for shallow box & single walled rims. It's also something I'd strongly recommend for use with deeper double walled rims.