Tubeless Tyres; Tubed Tyres; Inner Tubes - Raleigh Fast Pedelec User Manual

The tyre pressure is frequently stated in PSI. ➠ Chap-
ter 30 "Technical data" contains a table which you can
use to convert tyre pressures from PSI into bar.
17.2

Tubeless tyres

Tubeless tyres are also used nowadays, especially with
modern mountain bikes, but also with road bikes to a less-
er extent. Although the offer a number of benefits, they
must be used and handled with caution.
Only use tubeless tyres on suitable rims. These are
identified accordingly, e.g. using the abbreviation
"UST".
Only use tubeless tyres of the prescribed type and in
the prescribed manner, with the right tyre pressure
and, if applicable, using the recommended sealing
fluid.
Tools must not be used to remove tubeless tyres from the
rim as otherwise leaks may subsequently occur. If the
sealing fluid does not remedy the defect, the valve can be
removed and a normal inner tube used.
17.3

Tubed tyres

Tubed tyres are also used, particularly on bikes used in
sports competitions. With this tyre type, the inner tube
is sewn into the casing and this unit is glued firmly to the
designated rim using special adhesive. Tubed tyres offer
enhanced safety in the event of a puncture and improved
emergency-running characteristics
Only use tubed tyres on the designated rims. These do
not have turned-up edges (rim flanges) and instead
have a smooth inwards-curving surface onto which
the tubed tyre is glued.
Only use the tubed tyres of the prescribed type and in
the prescribed manner with the correct tyre pressure.
Special skills and a great deal of experience are
required to glue on tubed tyres. Always have tubed
tyres replaced at a professional bike workshop. Find
out how to handle tubed tyres correctly and how to
replace them safely.

17.4 Inner tubes

The inner tube is necessary to maintain the pressure in-
side the tyre. It is inflated via a valve.
Three valve types exist:
1 2
1 Sclaverand or road valve
2 Schrader or car valve
3 Dunlop or Woods valve
All three have a cap to protect them from ingress of dirt.
3
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