I'm assuming you're talking about minipumps; if so, skip the Zefal
minipumps. They can't even come close to handling road bike
pressures, they're not even that great with MTB pressures. When they
work they do indeed take fewer strokes than other minis, but I found
that the pump had trouble getting up to 60psi, to say nothing of
roadbike pressures, and was incredibly flimsy.
The Blackburn minipumps do much, much better. While they claim
pressures as high as 160psi, that's a bit optimistic. I have no
trouble getting 120psi out of my MP-3, though, aside from the
two-zillion strokes it takes to get that far.
Unless you have a real reason for going witha mini I strongly
recommend a full-size frame pump. The Zefal HPX series are excellent,
strongly recommended.
jim frost
ji...@world.std.com
I concur. I've had nothing but problems with minipumps. One
brand had no relief valve and blew the handle right off. Another
(blackburn, I think) had a weak point on the shaft right near the
attachment to the tire valve, and broke in two.
The Zefal HPx series full size frame pumps work great. I
recently started using a Blackburn frame pump (not mini) and got my
tandem's tires from 90 psi to 120 psi without unreasonable effort. If
there is some good reason that a full size pump is out, I'd go with CO2
before a mini pump.
Alan
> I concur. I've had nothing but problems with minipumps. One
>brand had no relief valve and blew the handle right off. Another
>(blackburn, I think) had a weak point on the shaft right near the
>attachment to the tire valve, and broke in two.
> The Zefal HPx series full size frame pumps work great. I
>recently started using a Blackburn frame pump (not mini) and got my
>tandem's tires from 90 psi to 120 psi without unreasonable effort. If
>there is some good reason that a full size pump is out, I'd go with CO2
>before a mini pump.
>
>
And I agree too, the Zefal minis = frustration and trouble while the HPxs
work the way they are supposed to. Like, they put air in the tires and it
stays there.
Tom Gibb (TBG...@aol.com)
> I've had nothing but problems with minipumps. One
>brand had no relief valve and blew the handle right off. Another
>(blackburn, I think) had a weak point on the shaft right near the
>attachment to the tire valve, and broke in two.
Interesting. I've tried a bunch of minis at this point and the
Blackburns were by far the strongest of the lot. You do want to avoid
the MP-1, though, it uses a twist-lock that doesn't work well. The
MP-3 and "mammoth" pumps are durable and reliable. If it was a
Blackburn you might have had a defective unit -- I can't imagine how
it would have been weak enough there to actually break.
I use a Zefal HPX3 on my roadbike and I'm totally happy with it. The
same is true of the Blackburn MP-3 I use on my MTB. I've used the
MP-3 on my roadbike, too, but it takes circa 500 strokes to get it up
to pressure and that's just too much.
You suggest using CO2 instead of minipumps -- that's probably a great
idea if you're a racer, but I have a hard time with CO2 in situations
when time is less critical. I'd rather not have a one-shot inflation
system when I'm a long way from home.
Bob Muse
Earle `retro because i can't afford new stuff' young
--
Earle Young