Zefal HPX from Riv?

[rperks]

Any of you out there buy into the Zefal HPX with the ASV (auto head
system)? I hve a few older HPX pumps in the garage and go back and
forth with my mini pumps. The new head system on these has me a bit
confused, things this simple should not make me feel so dumb. The
"instructions" on the box can be seen here:
http://flic.kr/p/a5fp98
even with these in 4 languages I can not get air to easily go into a
presta valve with the lever latched onto the stem. I have tried
pulling out the little metal widget, flipping the inner gasket etc. to
no avail.

Any body else figure these out?

[Eric Norris]

I've found that shoving the pump head *all the way down* onto the valve stem works best with all-in-one systems. Shove it all the way on, flip the lever, and it should work.

--Eric N
Sent from the iPad 2

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[Peter Pesce]

I'm not sure how the automatic head is supposed to work given the picture on the box.
You need something to push the pin on the valve down to let air in - in either presta or schraeder mode.

I have the HPX classic and you can see here there is a pointy-thing inside the valve head that pushes the pin down:
http://www.zefal.com/SITE/BASES/NOTICE/document/noticeDirectReversible.gif

Maybe the pointy thing in the automatic version is fixed inside the pump head, and you need to push it down further as Eric N suggests...?

[Mike]

I got one of those pumps and also found it frustrating to use. It
seemed like the valve had to be in head of the pump at just the right
depth and angle. The other frame pump Riv sells(http://www.rivbike.com/
products/show/topeak-pumps/28-024) works easier and seems to be better
quality. I want to like the Zefal but I don't. Fortunately most of my
bikes are now running variations of the Schwalbe Marathon and flats
aren't that much of an issue.

--mike

[grant]

Hi Mike,
I bet something fishy's going on. You flipped the guts to fit a
presta? I'm SURE something's not right. Anyway, you may return it---
I'd like to see it, to see what the deal is. I used an old HPX for
years, and the Topeak, and the new HPX, and ... no problem. Honestly,
send 'er back, we'll refund, and I'll see what's up. Send it to my
attn. Confirm by pm and I'll credit yur account today, including
freight (or cut a check, as you prefer). Thanks, and sorry.

G

[rperks]

Grant and Mike,
I fiddled around again with my new ASV version again this morning, and
found a combo to make it work. Not just work, but even better then a
couple of the oldies but goodies I have around. I opened up the head
and pulled out the rubber cylinder as well as the metal widget from
the rubber cylinder. Insert the metal thing into the rubber so that
it forms a cup at the bottom, and the pointy end is heading back into
the pump. Put it all back into the head with the metal widget first
and the bigger opening of the rubber cup pointing out. This is what
is opposite of the older pumps I have, those you only flipped the
rubber cup. Screw the cap on as usual to hold it all in. As per Eric
I gave it a good shove on to the valve stem and clamped it on. It
goes on easier after being shoved on a few times. The clamp was very
solid and the metal widget forms a cup to allow the presta valve to
stay open. I topped up a couple tires in the stable and am really
happy with it now, this pump will become the main inflator on my
Roadeo. I still like my Lezyne mini pumps, but the one I have is HV
not HP and caps out a little under where l like to keep the jack
browns.

I will throw together pictures later as a web search only turned up
the fact that I am not the only one having this challenge, but no
solution was apparent at first.

Rob

> > > Any body else figure these out?- Hide quoted text -
>
> - Show quoted text -

[Mike]

Hey Grant, I didn't flip the guts. I used it as is out of the package.
When it wouldn't work at first I thought that maybe I had to flip it
but clearly I didn't have to so I left it as is. I did get it to work,
it was just a bit persnickety. I have to admit that when I used it I
had about 50 miles in my legs and it was raining and I was stressed
about getting to camp. I'm gonna try it again when I get home tonight
and make sure everything is good.

To tell you the truth, I'm just a bit too lazy to package it up and
send it back but I appreciate your willingness to refund me. That's
customer service! Still, I did find the Topeak to just be a bit better
and would probably choose that over the Zefal.

I'll post again once I'm home tonight and let you know how it works.

--mike

On Jul 20, 8:36 am, grant <grant...@gmail.com> wrote:

[Mike]

I checked out the pump this morning and it appears to be working fine.
I don't know what was up before. It certainly wasn't working correctly
and I do know how to use a pump.

--mike