Quoted message said:May I please have some expert advice?
So my husband wants a bike pump for Christmas. What I know about these
things would fit on the head of a pin. All I know from him is that it
should have a gauge and it should easily work on both his tires and
mine. He has a Trek ZX 7000 (skinny tires), and I have a Trek Navigator
100 (slightly fatter tires).
When I shop for bike pumps online, I see lots of references to
"Schrader" and "Presta." But I can't tell what kind of valves are on
our bikes. Of course, I *could* go to a bike store and bat my eyelashes
at a salesguy, but salespeople give me the heeby-jeebies. I have my eye
on this pump:
http://www.bikesomewhere.com/bikesomewhere.cfm/product/272/1885/81,
which looks to be top of the line and is reasonably priced. I really
just need to know if this pump is likely to work on both the bikes
referenced above, and if anyone has a better idea.
Any tips? Thank you!
Kelly:
There are really two kinds of pumps, and two kinds of valves.
Valves, actually there are more then two, any bike made today will use
either Presta or Schrader, some vintage bikes use other types, but
forget those for now. Most modern pumps will either have a head that
can handle both, or can use an adapter to fit the other.
Now there are two kinds of pumps as well, floor pumps (like your example
one), these often come with guages, and can quickly fill a tire because
they tend to be able to move a lot more air in a single stroke. To take
a tire from dead flat, to 100PSI might take 20 strokes. If buying a
floor pump, make sure it either has a dual head, or comes with the
adapter for the other type and don't worry about it.
The other type are bike mount pumps, these are smaller and either use a
clip or strap to attach the pump to the bike. These are handy if your
out in the middle of nowhere, and have a puncture (flat), in that you
can quickly swap the tube for another one, and then use the bike mounted
pump to refill the tire. It takes alot more to strokes to fill a high
pressure tire, then a floor pump, but it beats walking 20km to the next
auto garage. This kind of pump should be either dual head or match the
bicycles valve type.
The ideal is to have both, a floor pump with guage to check your tires
every few days, and a bike mounted pump that can be used in on road ( or
trail) emergencies. Bike mounted pumps should be pumped a couple of
times, when doing other bike checks, to make sure that the piston seals
have not dried out.....
W