Another air pump thread!

[kwsmithphoto]

I've got big 2.3 tubless tires on my Stumpy FSR.

I haven't seen it mentioned here (at least that not that I can find), but it looks like the Topeak Turbo Morph G pump might be the best combination of high volume performance at an almost reasonable size. I like the gauge and hose too, I've ruined a few presta valves on doing trail repairs over the years, and I like knowing the PSI, so having an air line seems like a great idea. I can live without the gauge though.

Downside, it's a foot long and weighs half a pound, but that'll be in my pack, not mounted to the bike. The Specialized tires seat to the rim bead really well, but is refilling a tubeless tire a useless endeavor on the trail? Currently I carry a tube and a small pump, but it takes forever to get up to pressure even when I had it on my 26er.

Anything comparable to it's performance but with a bit less bulk? I've got a budget of $50 or so, and just want a really reliable pump that can deal with high volume tires.

Thanks, and sorry to ask such an un-original question!

[Dan GSR]

lezyne micro floor drive hv

[kwsmithphoto]

Thanks Dan. Just ordered the HVG model. I guess there's no getting around the size for pumping up a big tire. Besides, unlike the other one I was looking at, this might be the last "mini" pump I'll ever need to buy.

Hennry369, why the link to a pi lawyer site?

[grundy]

I don't know if they've addressed this or not, but the Lezyne screw on chuck is notorious for unscrewing tubeless valve cores. If you have valves with a removable core, watch out. Great pump other than that.

[thickfog]

The leyzene pumps are small, pump fast, light and fit in my underseat bag. Awesome. And yes, watch the core as it will unscrew on you! Only issue I've found.

[Fuglio]

I don't know if they've addressed this or not, but the Lezyne screw on chuck is notorious for unscrewing tubeless valve cores. If you have valves with a removable core, watch out. Great pump other than that.

They fixed it with a gold chuck. Dont know how the gold helps but there is a small air release button that keeps the valve core from getting removed....

[kwsmithphoto]

Thanks for the advice, but from what I can tell, the Stan's presta setup is based on a couple of o-rings. Unlike presta valves of olde, you can just push them into place or pull them straight out with some caution using hand tools.

[thickfog]

Thanks for the advice, but from what I can tell, the Stan's presta setup is based on a couple of o-rings. Unlike presta valves of olde, you can just push them into place or pull them straight out with some caution using hand tools.

Not sure what you mean. Stans valve cores screw in like any other removable valve core on a presta. O ring?

[PretendGentleman]

Topeak pumps are great in my opinion. I have owned 2 road morphs and 1 mountain morph. The first road morph served me for the last 6 years, often acting as my home floor pump. It's still going strong. The road morph is far better than the mountain morph albeit lower volume per stroke. The mountain morph lacks an extendable hose, which is stupid of topeak. road tires don't need a long hose, but mountain, especially fatter tires, really needs it. The turbo morph looks pretty awesome except for the lack of extendable hose. REgardless, bigger pumps work really well. Folks with little ones (e.g., little mini lezyne pumps) are always borrowing my mountain morph when repairing flats on the trail because its fast and relatively effortless. mini-pumps with foot pedals and a hose to approximate a floor pump are amazing and far less likely to mess up valve stems than conventional, hold it in two hands, mini-pumps

[TAPnTX]

The Lezyne Pumps are rebuild-able too. I have one and love it, for the simple reason it has a long hose, and no plastic to ever break.

Todd

[kwsmithphoto]

Not sure what you mean. Stans valve cores screw in like any other removable valve core on a presta. O ring?

Ya...early AM brain fart from me, sorry.

The rubber seals at the bottom of the removable core are just tiny o-rings that get squeezed mostly 'flat' when the manufacturer installs them. A little bit of saliva there when you install them into the core apparently helps them seal, because I haven't lost a single pound of air since going tubless a week ago. Maybe that's just dumb luck, I dunno, but I've read a lot of people complain about losing pressure without leaking or "sweating" out sealant.

[thickfog]

Ya...early AM brain fart from me, sorry.

The rubber seals at the bottom of the removable core are just tiny o-rings that get squeezed mostly 'flat' when the manufacturer installs them. A little bit of saliva there when you install them into the core apparently helps them seal, because I haven't lost a single pound of air since going tubless a week ago. Maybe that's just dumb luck, I dunno, but I've read a lot of people complain about losing pressure without leaking or "sweating" out sealant.

O! Pun intended.