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SKS RENNKOMPRESSOR: A superior, recommended floor pump

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Old December 27th 18, 02:14 PM posted to rec.bicycles.tech
Andre Jute[_2_]
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Default SKS RENNKOMPRESSOR: A superior, recommended floor pump

Today I found a flat tyre on my bike. It's probably either due to seasonal changes (read central heating as my bike has its own temperature-controlled space) or a very slow leak, because the bike hasn't been used in a month.

Still, here at the Jute Cycling Laboratories we never waste an opportunity to perpetrate a scientific experiment on an unsuspecting bicycle.

*** Fuill strokes on 10-year old never-rebuilt SKS Rennkompressor to inflate a completely empty Schwalbe Type 19A tube (the Leicht or "racing" balloon tubed ) fitted to Schwalbe Big Apple 60x622 to 2.5 bar = 30 strokes exactly, even end-strokes still ridiculously easy.

The ease of operation for such a low requirement is easily explained: the Rennkompressor is designed tall and narrow to fill narrow racing tubes to high-bar pressures with a 16 bar maximum.

Andre Jute
Empirical check

On Thursday, December 6, 2018 at 2:26:02 PM UTC, Andre Jute wrote:
A floor pump I really like, to the extent that we have two of them, is the SKS Rennkompressor. It has several available heads, but the best one is a double-hole head with a flip lever; I imagine that it won't last as long as the also available brass and steel heads, and that in a few years the plastic and rubber double-hole head will have to be replaced, but that doesn't bother me, as I have spare parts laid in, and the Rennkompressor is famous for having been rebuildable for about half a century now. It's an aesthetically, kinesthetically and operationally pleasing pump and, of course, its speed leaves those miniature abominations curled up and dying in its dust, which helps a lot if you're trying to fill 622x60mm Big Apples.

On this page
you can see the pump, same as you see on the TdF, all it's four heads -- the one I like, called the Multi Valve, is second from the left (as I say, likely the least long-lived but also the most convenient) and below that you can click for the amazingly complete available replacement parts list.

Mine came from one of the two German dealers I like and cost about 50 Euro delivered to my door in Ireland.

None of the spares I laid in have been required in the ten years or so since I bought the pumps, and people who bought them on my recommendation are also very pleased with the SKS Renkompressor. The only criticism I ever heard is that the analogue manometer dial near the folding footplate is distant and small and not very finely graduated for those who want to pump up balloons and other low-pressure tyres because the pump is primarily intended for putting 15 or 16 bar in narrow racing tyres with a couple of quick strokes. That doesn't bother me, because by the time I want to use the pump I'm wearing my cycling spectacles, which are optimized to making eye contact with a motorist entering from a T-junction 30 or 40 feet away, so I have no problem reading the dial, and I'm a belt and braces man who anyway checks with an electronic gauge as well.

A superior, recommended floor pump.

Andre Jute
There's a reason so many racing teams use the SKS Rennkompressor


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