Track pump revelation.

[Scoosh]

A track pump regularly features at or very near the top of any list of 'I've bought a bike, what should I get next ?' - usually just after padded shorts !

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[broadway]

Not sure, but I think you may have misunderstood me. Track pumps sold for mountain bikes have fatter barrels so as to pump bigger volumes at lower pressures so they are a real struggle when trying to achieve 100 psi on a road tyre. For road bikes you need a thinner barrel or muscles like a gorilla.

I've not seen a MTB track pump, have you an example?

 

[deptfordmarmoset]

Joe Blow MTB pump (rated to 75psi)

Joe Blow normal (rated to 160psi)

The pressure gauge is helpful for comparing the barrel sizes. Not exactly an enormous difference, admittedly.

 

[Cyclopathic]

Not sure, but I think you may have misunderstood me. Track pumps sold for mountain bikes have fatter barrels so as to pump bigger volumes at lower pressures so they are a real struggle when trying to achieve 100 psi on a road tyre. For road bikes you need a thinner barrel or muscles like a gorilla.

Ah, yes I misunderstood. The Serfas pump I got was getting quite hard to push at 80. I'm not entirely sure if it's mtb or road specific or a sort of in the middle general type of a thing. It says it's rated for 160psi but I rarely believe these things. I would be happy to use it up to about 110/115 despite its claims for higher capacity and I think I'd have strength to get it there. Or the weight at least.

 

[Globalti]

Any mathematicians around? I bet a few mm smaller diameter would make a huge difference to the effort required to push the piston.

 

[Cyclopathic]

Any mathematicians around? I bet a few mm smaller diameter would make a huge difference to the effort required to push the piston.

I agree. This is definitely the case. You'd be pumping in less air per stroke but it would be easier. Like gears but made of air, or pump. Something. My pump didn't seem to make claims either way. Ah, it's a hybrid pump...maybe.

 

[Globalti]

Stop thinking about it and pour yoursef a beer, Dude.

 

[User16625]

I have a track pump and its used for car, motorcycle, MTB and road bike tyres. Its crap at none of them.

 

[Cyclopathic]

Stop thinking about it and pour yoursef a beer, Dude.

This is good advice and belongs at the bottom of many diagnostic (and other) flow charts.