HP Velotechnik Spirit - Manual (Page 53)

Maintenance and car
e
HP
Velotechnik
51
Wheels
The correct air pressure is decisive for
smooth running and a good protection against
punctures.The maximum pressure is printed
on the side of your tire.If your Spirit is fully
suspended you can always go for the maximum
pressure.You might find an indication of the
minimum required pressure on the side of the
tire as well.
Since the tubes in the tires gradually loose air
you should check the air pressure before eve-
ry ride.
The tubes come with Presta valves (also called
french valves).They are very airtight and easy
to pump up.
To do so, first screw off the valve cap. Now
you see a small threaded rod with a knurled
nut that comes out of the valve. Loosen the
knurled nut as far as it is possible.
To pump up the tire and check the pressure
you need a pump with a gauge, preferably a
solidr floor pump. Put the knob of the pump
on the valve, push it completely on the valve
and then retract it a little bit. Now you can
pump up your tire easily.
After you have pumped up the tire to the
maximum pressure pull off the pump knob.
Secure the valve by turning the knurled nut on
the threaded rod properly against the valve
body. Finally put on the valve cap again.
When you exchange tires please note the ma-
ximum width limit of 54 mm (approx. 2").We
recommend tires that are 40-54 mm (1,6 - 2
inch) wide.At the front and at the rear wheel
you have to use ISO size 406 (20").The tire
width possible at your bicycle depends on the
size of your rims. Please ask your local dealer.
Wheels
Before pumping up the tire, you have to unscrew the little
knurled nut on the valve.
Danger! Never pump up your tires beyond
the maximum pressure.The tire may burst
while riding or come off the rim, which may
result in a serious fall.
Danger! Check your tires for damage on a
regular basis.You should exchange tires with
worn threads or damaged sidewalls.
Damaged rim tapes have to be exchanged
immediately. Damages at the tires may lead
to a sudden burst of the tire and thus result
in a serious fall.