[Yak]pump hoses

[Rob Snyder]

I think the "Morph" pumps have hoses. I am trying to cobble something
together to use on my compact pump, should also work on my Silca frame
pump. -Rob

--- "John S. Allen" <jsallen at bikexprt.com> wrote:

> At 01:47 PM 9/1/2005, Rob Snyder wrote:
> 
> >Virtually eliminated by having a pump with a hose!
> 
> But portable pumps these days don't have hoses. Only floor pumps do.
> 
> >More at the bottom.
> >
> > >
> > > The tube, and my pride, deflated suddenly when the pump wiggled
> the
> > > valve
> > > stem and the rim cut through the inner tube right next to the
> valve
> > > hole
> > > where it can't be patched.
> 
> >I am starting to wonder why I have presta valves anyway, it
> certainly
> >is not to save .5g on a 30lb recumbent with a 20lb overweight rider.
> 
> There is a good reason unrelated to weight, though it might not apply
> on 
> your bike: a narrow rim may not be able to accommodate a Schraeder
> valve. 
> Another reason is that the Presta valve seals without the need for a 
> spring. The whole syndrome of hoseless thumblock pumps with the head 
> integrated into the barrel more or less got started (with the Zéfal
> HP 
> pump, some 30 years ago) because this works much better with the 
> *Schraeder* valve. A frame pump with a hose always leaked air out of
> the 
> tire when unscrewing the hose from a Schraeder valve. It worked OK
> with a 
> Presta valve.
> 
> In my opinion, many inner tubes just don't have enough reinforcement
> around 
> the valve stem. I've had Schraeder tubes fail there too.
> 
> John S. Allen
> 
> jsallen *at* bikexprt.com (replace " *at* " with "@")
> 
> http://www.bikexprt.com/ 
> 
> 



		
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