
Presta valves are thinner and longer than Schrader valves (the more common valves used on cars and most bicycles). A small nut must be turned to allow the inner tube to be pumped or deflated.
1. Buy a Presta Valve pump.
2. Buy a Presta Valve adapter so you can use a regular Schrader valve style pump.
3. Drill out your rim, and use a Schrader Valve tube. The problem with this idea is that the reason for Presta Valves is that the smaller diameter hole increases the strength of your wheel's rim -- helping you avoid a tire taco.
You can get some valve adapater reviews here.
Posted on June 28 2009 at 04:55 PM
What are your options if your mountain bike uses presta valve
tubes, but all you have is a regular bicycle pump (with a tip
like the kind used on cars)?
Well, first of all you can by a presta-valve pump from a
specialty bicycle shop. This will set you back about $30 - $50
bucks -- maybe more.
Another option is to buy an adapter online. These presta valve
adatptors will convert a normal schrader valve pump into a presta
valve style pump.
Lastly, you can just switch the tube out. Be careful though,
because the presta valve has a smaller diameter, and the tip of
the schrader valve won't fit through the hole in your wheel rim.
In that case you need to drill it out, which can significantly
weaken your rim.
Posted on June 26 2009 at 01:09 PM
Woot! My bike has new Shimano breaks and gear changers. They must
have lubed up the bike to a little, because it was totally a
pleasure to ride again. I took my son around the neighborhood and
we went off-roading a bit too.
I'll try to post pictures soon.
Posted on June 23 2009 at 11:06 PM
The shop called and said that my break wires were rusted out. Same with the gear shift wires. Ugh. Gonna be like $120 to fix the bike. Can't be worth it.
Posted on June 23 2009 at 07:07 AM
The saga of the mountain bike repair continues. I dropped it off
about 10 days ago because the gears weren't switching smoothly. I
missed the phone message when the shop talked to my wife -- she
says she okayed about 80 dollars in parts, which were then
ordered.
I never heard back though. Finally, they called back to tell me
the parts have arrived and the repairs should be complete by
Thursday. Woot!
Posted on June 14 2009 at 03:35 PM
So I got invited by a neighbor to go mountain biking. I just
completed my first marathon, and I have a bike -- I should
totally to it!
But my gear changing thing busted (good excuse). I dropped the
bike off at the shop. So, maybe next week I'll be walking my
fancy bike up the hills :)
Wish me luck.
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