Presta/Schraeder conversion

[martint235]

Many years ago, for reasons lost to the mists of time, I had my Giant ATX fitted with a Schraeder inner tube and rim at the rear and a Presta rim at the front. What would be the easiest way to make them the same for someone as mechanically incompetent as me?

I'm thinking of using it as a commuter so one kind of tube would be good.

 

[Profpointy]

Different inner tube - cost £3 to £5 and job's a good un.

That said, many, perhaps most, pumps cqn cope with either, so cqn be deferred to next puncture time

 

[martint235]

I thought it was more complicated than that as the holes in the rims are different diameters .

 

[Profpointy]

I thought it was more complicated than that as the holes in the rims are different diameters .

Ooo, I didn't know that - obvious now you say. well in that case a presta is smaller, so standardise on presta. Although you may not then be able to screw up the lockring, given some tubes don't have em, i guess it doesn't matter - or stick a washer on.

EDIT. i've not actually done this, but can't see any real reason it would be an issue. And it is something I would be confident to try. My only worry is if the bigger hole rubbed on a weaker bit of the tube.

 

[Mark Grant]

Drill out the Presta and run Schraeders.

 

[martint235]

Drill out the Presta and run Schraeders.

Good idea but please see mechanically incompetent. Me+drill+rim=new rim which admittedly solve the problem but was hoping for a cheaper way

 

[Mark Grant]

I think that a reducing adapter may be available so you could run Prestas with no fear of drilling through your hand!
Edit.
Here you go
http://www.ebay.co.uk/itm/Mavic-Rim-Valve-converters-pack-of-10-/171349318953?_trksid=p2054897.l4275

 

[raleighnut]

Some presta tubes come with a shouldered retaining nut to allow for the bigger hole, Specialized I think maybe others as well, but I've not got a new one to check.

 

[ufkacbln]

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"

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

 

[raleighnut]

Aha Schwalbe do em too

 

[Profpointy]

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


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

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

 

[martint235]

Thanks all. Time to buy some tubes with screwy bits on!!!

 

[surfdude]

buy some nice new very expensive wheels

 

[GrumpyGregry]

Conti's have the flange.

Car valves have no place on a quality bicycle.

 

[ufkacbln]

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

Took me a while to figure it out as well, then one day I had a tube split and no Schraeder valve, so in desperation fitted a Presta and EUREKA