Tire inflation?

[mellic]

I would take Geonz advice before you buy a new pump. Turn your wheel so the valve is at the bottom and then try.

[Geonz]

At the top! At the top! (Or wherever it hasn't been... but for me, the bottom was where it didn't work.)

[bcipam]

When you attached the pump nozzle, did you set the "hold" lever? In otherwise, the nozzle goes on and you usually pull the lever up (or down depending on the pump) to latch the nozzle on adn hold in the air. If you don't air comes out.

[Bella]

I also have a dual Schraeder/Presta pump and succeeded in deflating one perfectly good tire. It was nothing but a struggle to re-inflate. I haven't found the magic formula yet - but I dare say I don't feel like experimenting.

[Dianyla]

I've also got the (notso)Smarthead pump that senses schrader vs. presta head. I found that if I don't push the presta valve in far enough it tends to just leak air out as I pump, eventually deflating the tire. I think those pumps work by assuming that a schrader valvestem will only go in about 1/4" inch and a presta will go in more like 3/8" or even more like 1/2".

[Melody]

If any of you are really hating the head on your pump, I really recommend one of these:

http://www.competitivecyclist.com/za...RY.ID=47&MODE=

It's a replacement head for a Silca pump (dual schrader/presta) and should fit any standard hose on a floor pump. To access the shrader portion, just unscrew the presta head.

My husband and I have had numerous problems with breaking valve stems, leaking heads, etc. etc. That all went away when we converted our pump to this head. There's also no lever to pull. To use, just slip the head on the stem and start pumping up the tire.

Mel

[Trek1500]

Maybe a little off topic, but does anyone use a CO2 inflator? I have one, but haven't used it because I'm not sure how it works. Do you just release a little of the CO2?

[maillotpois]

When you attached the pump nozzle, did you set the "hold" lever? In otherwise, the nozzle goes on and you usually pull the lever up (or down depending on the pump) to latch the nozzle on adn hold in the air. If you don't air comes out.

This can be tricky to get right - and every pump is different. I'll bet this was what the problem was. Shadon, you're going to have to figure out how to get your pump locked onto the valve right.