using a frame pump?

On 17 Jul 2004 21:36:50 -0700, [email hidden] (vincent chiao)

Quoted message said:

Hi, I got a flat on my rear tire today. I stopped, took the old tube
out, put the new one in, got the tire seated, no problems. But then
when I got my Zefal pump (it's one of those 9" telescoping
contraptions) and tried to inflate the tire, no go. The little nut on
the tip of the presta valve was open, I was bracing the pump head with
my other hand so that I wouldn't bend the valve, the pump was
locked--I checked everything, and must have been pumping like an idiot
for 20 minutes with no discernible result whatsoever.

Pushed down far enough?

On some pumps, there is a circular piece around the opening. This can
be too loose or too tight. It compresses the washer for an air-tight
seal. Too loose and no seal. Too tight and you can't get the pump far
enough down the valve. On some pumps I have had to loosen this for
attachment and then tighten it for a good seal.

Quoted message said:

I was about to
give up when I decided to use my presta-schrader adapter on the valve
and use the schrader end of the pump, and then it worked like a charm.
What gives? Why is it easier (or just plain possible) to inflate the
tire with the schrader vs. the presta--it's not like there've been any
problems with my presta tubes with floor pumps or anything? Am I doing
something wrong?

Trying something for 20 minutes with no results? Learn form the
French- give up much sooner! 🙂

"vincent chiao" <[email hidden]> schreef in bericht
news:[email hidden]...

Quoted message said:

Hi, I got a flat on my rear tire today. I stopped, took the old tube
out, put the new one in, got the tire seated, no problems. But then
when I got my Zefal pump (it's one of those 9" telescoping
contraptions) and tried to inflate the tire, no go. The little nut on
the tip of the presta valve was open, I was bracing the pump head with
my other hand so that I wouldn't bend the valve, the pump was
locked--I checked everything, and must have been pumping like an idiot
for 20 minutes with no discernible result whatsoever. I was about to
give up when I decided to use my presta-schrader adapter on the valve
and use the schrader end of the pump, and then it worked like a charm.
What gives? Why is it easier (or just plain possible) to inflate the
tire with the schrader vs. the presta--it's not like there've been any
problems with my presta tubes with floor pumps or anything? Am I doing
something wrong?
Any suggestions or comments would be great. Thanks--
Vincent.

Was it the first time you used the framepump? Did you flip the little rubber
thingie in the pumphead that makes it possible to use the framepump with a
schrader OR presta valve. It is likely that de rubber ring is in de schrader
position. Unscrew the pumphead and flip thant rubber ring.

Lou

In article <[email hidden]>, [email hidden]
says...

Quoted message said:

Hi, I got a flat on my rear tire today. I stopped, took the old tube
out, put the new one in, got the tire seated, no problems. But then
when I got my Zefal pump (it's one of those 9" telescoping
contraptions) and tried to inflate the tire, no go.

Little pump = little performance. For best results get a full size frame
pump. It will make fixing a flat less of a chore.

Quoted message said:

The little nut on
the tip of the presta valve was open, I was bracing the pump head with
my other hand so that I wouldn't bend the valve, the pump was
locked--I checked everything, and must have been pumping like an idiot
for 20 minutes with no discernible result whatsoever. I was about to
give up when I decided to use my presta-schrader adapter on the valve
and use the schrader end of the pump, and then it worked like a charm.
What gives? Why is it easier (or just plain possible) to inflate the
tire with the schrader vs. the presta--it's not like there've been any
problems with my presta tubes with floor pumps or anything? Am I doing
something wrong?
Any suggestions or comments would be great. Thanks--

Go to your LBS and ask them to show you how to use it?
--------------
Alex

I checked, and couldn't find a removable rubber ring of any sort when
I unscrewed the pump head. Anyway--I think I forgot to mention--when I
was out trying to figure out what was going on, I used the pump on the
tube with the hole in it, and it seemed to inflate just fine.
(Obviously it wasn't going to hold the air for very long.) It's just
when the tube was on the rim under the tire that it wouldn't seem to
inflate. So maybe it was some sort of mounting issue--but then why
would it inflate with the Schrader valve?
Any suggestions would be great. Thanks,
Vincent.

"Lou Holtman" <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

"vincent chiao" <[email hidden]> schreef in bericht
news:[email hidden]...

Quoted message said:

Hi, I got a flat on my rear tire today. I stopped, took the old tube
out, put the new one in, got the tire seated, no problems. But then
when I got my Zefal pump (it's one of those 9" telescoping
contraptions) and tried to inflate the tire, no go. The little nut on
the tip of the presta valve was open, I was bracing the pump head with
my other hand so that I wouldn't bend the valve, the pump was
locked--I checked everything, and must have been pumping like an idiot
for 20 minutes with no discernible result whatsoever. I was about to
give up when I decided to use my presta-schrader adapter on the valve
and use the schrader end of the pump, and then it worked like a charm.
What gives? Why is it easier (or just plain possible) to inflate the
tire with the schrader vs. the presta--it's not like there've been any
problems with my presta tubes with floor pumps or anything? Am I doing
something wrong?
Any suggestions or comments would be great. Thanks--
Vincent.

Was it the first time you used the framepump? Did you flip the little rubber
thingie in the pumphead that makes it possible to use the framepump with a
schrader OR presta valve. It is likely that de rubber ring is in de schrader
position. Unscrew the pumphead and flip thant rubber ring.

Lou

On 18 Jul 2004 20:21:58 -0700, [email hidden] (vincent chiao)

Quoted message said:

I checked, and couldn't find a removable rubber ring of any sort when
I unscrewed the pump head. Anyway--I think I forgot to mention--when I
was out trying to figure out what was going on, I used the pump on the
tube with the hole in it, and it seemed to inflate just fine.
(Obviously it wasn't going to hold the air for very long.) It's just
when the tube was on the rim under the tire that it wouldn't seem to
inflate. So maybe it was some sort of mounting issue--but then why
would it inflate with the Schrader valve?
Any suggestions would be great. Thanks,
Vincent.

For one reason or another, you couldn't get the pump head far enough
down the valve? Maybe no nut at the base and you didn't keep the valve
from pushing into the tire? Or a shortish valve with a (semi) aero
rim? The valve needs to go a decent distance into the head for it to
seal.

autopi-<< What gives? Why is it easier (or just plain possible) to inflate the
tire with the schrader vs. the presta--it's not like there've been any
problems with my presta tubes with floor pumps or anything? Am I doing
something wrong? >><BR><BR>

Zephal pumps have convertable heads. You gotta convert it to presta. All
Zephals come with the schraeder side in place(who knows, they are french
afterall).

Take the head apart, reverse the little plastic doodad in the head so the 'pin'
is facing toward the pump, reverse the rubber gasket so the little hole is
'out'.

Peter Chisholm
Vecchio's Bicicletteria
1833 Pearl St.
Boulder, CO, 80302
(303)440-3535
http://www.vecchios.com
"Ruote convenzionali costruite eccezionalmente bene"

[email hidden] (vincent chiao) wrote in message

Quoted message said:

Any suggestions or comments would be great. Thanks--
Vincent.

When the pump is not attached to anything and you pump it, does air
come out? If so, then the problem must be at the pumphead-valve
interface.