Mountain Biking - New rider has valve question.

I just recieved my new GF Tassajara. I have one question about the valves. The dealer sold me two adaptors to allow me to add air to the tires with a 'regular' pump. Problem is I can't figure how to put the adaptors on. Can someone help me out?

There are a couple of possible answers.

In one scenario, the pumps fits a Schrader valve (the same kind as on a car), and you need to use a separate adaptor to fit a Presta valve, which is thinner and has a brass nut at the end you have to loosen before you pump up the tire. If you have an adaptor for Presta, it may be a metal tube with different sized ends. One end goes in the pump and the other slips over the Presta valve. Once you pump up the tire, tighten the brass nut on the valve. Those separate adaptors work well with compressed air hoses but might be difficult or impossible to use with a hand held pump.

Or the pump may have some internal parts that you need to remove and reassemble to fit one or other valve type. Pictures and or brand names would help.

Do new bikes still come with Shrader valves?

Do new bikes still come with Shrader valves?

High dollar bikes typically come with Presta. Low dollar bikes typically come with Schrader.

...and im still trying to figure out why we have 2 configs for mtn bikes?

I just recieved my new GF Tassajara. I have one question about the valves. The dealer sold me two adaptors to allow me to add air to the tires with a 'regular' pump. Problem is I can't figure how to put the adaptors on. Can someone help me out?

Jeez...take the dust cap off the presta valve...open the valve (little scew thing at the top), screw on the adaptor, fat side down...attach pump...when done, close the presta valve but I keep the adaptor on the stem using a shroeder dust cap...this way I don't have to keep switching the pump valve from bike to bike

Thanks Bro