railrider2014

Hi;
I have two frame pumps, both are direct connect - no hose. You just stick the pump head onto the valve, secure the clamp, and start pumping.
These pumps have one common problem: They have no flexible joint between the pump head and the tire valve. I believe that the action of pumping up a tire using this type of pump causes premature failure of the bond between the valve stem and the tube.
I notice that when I am pumping up the tire, the valve stem moves significantly. No matter how tight I try to make the nut against the rim, the valve stem will move.
The last 3 or 4 of my tube failures have been due to the failure of the bond between stem and tube. I strongly believe that the action of pumping up the tire is the cause.

If I could get a frame pump with a short rubber hose that would absorb the stress caused by the pump, it would completely solve the problem. However, I would rather just fit a hose with valve fitting to my existing pump to save money. This hose would have a schrader male at the pump end and a schrader female to fit onto the tire valve.
Does anyone know whether such an animal exists?

Thanks

CP

dsbrantjr

I use a Topeak Road Morph G which has both a hose and a reasonably accurate gauge, and can be easily changed to inflate both Schrader and Presta valves. They also offer some other pumps in the Morph series.

Dyskolos

I use the Lezyne HP Drive Hand Pump.

mconlonx

If I'm using a frame pump, I usually grab the head, tire, rim, and at least one spoke with the non-pumping hand to keep things steady and not tear valves from tubes.

But those pumps with the hoses are nice. I often travel with an older model Bontrager Mini-Charger.

CliffordK

I gave the silver model of the Lezyne High Pressure pump to my nephew (after testing it). I wanted something that he didn't have to worry about the valve. I like the reversible Presta/Schrader compatible hose. The pump seemed to work quite smoothly.

I've done most of my pumping with a frame pump with rigid head and never had problems with the valve, both with the wheel on the bike or off the bike. But I also re-pump the tires infrequently, not twice a day.

I always hold the pump head and wheel... there is some movement, but I try to minimize it.

railrider2014

Thanks guys;
I think I'll go with the Lezyne Pressure Drive. The thread-on valve fitting is the main reason I choose this one over the Topeak. I can't tell you how many times the flip-release on my two other pumps has released while pumping.
I suppose that if I could get just a hose that would fit into the pumps I have, I could save some $$, but then I have to worry about where to store the hose - ha! I'd probably be forgetting to take it every time.

CP

Edit: OTOH, I found a replacement hose for a floor pump on Ebay. Schrader female at the bike end, not sure what the thread is at the pump end. Only problem with this, from the looks of the photo, I don't think the male thread is long enough to be caught by the retention mechanism in the pump, so it would just fall out.
I guess I should keep looking into this, since I do have two perfectly good frame pumps on hand.

Edit 2: I think the pump end is Dunlop, not Presta or Schrader. Try to find a Dunlop to Schrader or Presta that will be long enough to fit into the pump head. I'm sure that if it's not the correct size and length, the pump head won't hold it in while pumping.

Probably just better off to get the Lezyne and be done with it. No hassle.

railrider2014

But I'm really curious. What is the thread on the pump end of the floor pump hose? Is it Dunlop, Schrader, or Presta, or what?

CliffordK

Post some photos & brands of the hose AND pump in question.
Dunlop valves are rare in the USA. Where are you?

You can always cut off the hose and slip it onto a hose barb with a clamp.

DrIsotope

I swear by this guy, the BV Micro Floor Pump. Checks all the boxes (hose, gauge, relatively compact, actually pumps up a tire without turning my arm into jelly) and the little flip-out foot peg is a nice bonus. Will take a 700x28 from flat to ~70psi in around a minute. Also, cheap. Under $20.

nhluhr

I'll toss in my vote for this exact pump. It's got a gauge and a tiny little foot-wedge along with the folding handle to make pumping easier. I have one that i use in lieu of CO2 cartridges on my Ritchey Breakaway (since the airlines don't like CO2 cartridges in your baggage).

I also have a Syncros HP1.0 that is smaller and lighter. It's got a short little retractable hose on it that makes it a little better for not stressing the valve but its size and general ergonomics mean it's not nearly as easy to use as the Road Morph and of course no gauge so I'm using guesswork, but it's good enough for emergency.

nfmisso

Topeak Morph Turbo G - our tandem has 38-622 tires at 90psi....

Ronno6

+1 on the Topeak Road Morph.
In addition to the features listed, it has a foldable foot peg so you can use it like a floor pump.

sch

The foot peg and hose on the Road Morph make getting 90-100# pressures relatively easy, once the pressures get above 80 or so you can flip out the foot peg
and use your body weight to keep pumping. The Lezyne Pressure drive is a nice design and melts into the bottle mounts but does require some upper body
strength to get to the 100# or so level. Some mount the topeak to the seat stays, it will go on the down tube but is more prominent than the Lezyne.
Lezyne available in colors for $15 more.

Jeff Wills

Another vote for the Topeak Road Morph. I have 3 of them attached to various bikes.

Willbird

I just got that pump, nice engineering job overall, I really like it, just used it in a trial in the house, I'm guessing about 200 strokes to inflate a 700x25 to around 100 PSI.

Bill

Yan 

One more vote for the Topeak Road Morph. Get the version with the pressure gauge.

fietsbob

Zefal used to make one , the Hose unscrewed and stowed in the handle,

but the One others say is like a mini floor pump so you push against the ground , not the other hand.

DrIsotope

I'll continue to vote for the BV Micro over the Topeak, because it does the exact same thing but costs half as much.

auxym

Zefal Solibloc, I have one lying around, from late 90s or so. Unfortunately, the hose is leaking in a couple of places, and I can't find a replacement anywhere.

fietsbob

Have you considered replacing the hose and re using the same end fittings?

Got a Campag steel P/V head I think was made to screw in place of the Hose ..

ddeand 

I've got a few Lezyne pumps - two frame pumps, one floor drive, and one CO2 inflator. I'm sold on the metal-to-metal connection. Been using them for six years, now.

railrider2014

I finally decided on the BV Micro pump (carbon color) because of the price and features. It gets great ratings at Amazon, and as DrIsotope wrote it's 1/2 the price of the Topeak.
The one I ordered shows the handle as a straight-on rather than the fold-down one. I thought this design would be more durable, and since I'm not trying to pump 100psi (mountain bike is much lower than that) I won't need the extra leverage the larger handle would give me. In any case, I usually don't have trouble with upper body strength - (even though I may look like I do...ha)> That said, I've never tried to pump more than 60psi with any frame or floor pump.

CP