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View Full Version : Schrader/Presta tubes help!!!


dirtydirtysouf
07-05-2006, 03:04 PM
well i got a new salsa gordo rim (36 spoke) for the rear of my fisher and it is set up for a Presta valve..........well my front "factory" rim (32 spoke) is set up for Schrader valve and i dont want to carry to diffrent tubes.............

so here is my question: can i install a presta tube in/on a schrader rim............

please help the stupid:help:

binary visions
07-05-2006, 03:16 PM
Yep, you can.

It's possible for the smaller presta valve to get wedged into the larger hole and flat your tube, so you can either build up the area around the hole with a couple layers of tape (ghetto fix), or you can head down to your LBS, they should have a little rubber grommit that fits into the valve stem hole to downsize it to a standard Presta size. I believe Mavic includes them on a lot of their wheels.

You might be able to find the grommit at a local hardware store, too.

RenegadeRick
07-05-2006, 03:18 PM
well i got a new salsa gordo rim (36 spoke) for the rear of my fisher and it is set up for a Presta valve..........well my front "factory" rim (32 spoke) is set up for Schrader valve and i dont want to carry to diffrent tubes.............

so here is my question: can i install a presta tube in/on a schrader rim............

please help the stupid:help:

Prestas will fit in a Schrader, but Schraders won't fit in a Presta.

We had this discussion at length this weekend during the "Tour da Palos" ride. Our group had six flats for six riders, some people multiple times. We started getting pretty desparate for solutions...

Wumpus
07-05-2006, 03:43 PM
You can drill out the presta rim to fit a schrader valve.

Also you can just put the nut from the presta on the inside of the rim. I would also use a nut on the outside especially on the rear regardless of what the rim drilling is.

dirtydirtysouf
07-05-2006, 03:48 PM
or you can head down to your LBS, they should have a little rubber grommit that fits into the valve stem hole to downsize it to a standard Presta size. I believe Mavic includes them on a lot of their wheels.

You might be able to find the grommit at a local hardware store, too.

sweet thats what i thought but i just wanted to make sure before i try and mess up something

dirtydirtysouf
07-05-2006, 03:49 PM
I would also use a nut on the outside especially on the rear regardless of what the rim drilling is.

why is that?

Wumpus
07-05-2006, 05:10 PM
why is that?

I've found that my rear tire slips a little, and I end up with a crooked valve stem which can then end up ripping the stem off at the base. Putting the nut on the outside stops it.