Volker Leimann writes:
http://www.sks-germany.com/en/stage.php?mod=detail&cid=1&id=50&zg=1&seite=2&start=3
>> Which begs the question: what is a "track" pump?
> A "track" pump is the same like a floor pump, but the "SKS
> Rennkompressor" has the advantage to inflate tires up to 16 bar
> (thats 240 psi), for tubular track tires.
"Rennkompressor" aka "racing pump", no ordinary pump, this!
The allusion to the bicycle track is common in bicycle lore, there
being the place where bicycle tales most prevalent, higher speeds,
higher pressure, lighter tires, stronger rim glue, tougher chains,
lighter bicycles and many more. I recall local riders who would often
mention their "track pump" concerning tire inflation. It's not new.
Just the same, maximum inflation pressure is limited mainly by
operator strength, or for practical purposes the diameter of the
output cylinder. The smaller the volume the higher the pressure, and
the longer it takes to inflate a tire. That is why two stage pumps
are desirable. They use a small diameter output cylinder filled by a
large diameter first stage on the otherwise wasted up-stroke. The
pump is effectively one with a cylinder the size of its first stage
but requiring no more force than a single stage pump for output.
The two stage pump is the true Rennkompressor.
Jobst Brandt