Rim Trueness And Spoke Tension; Carbon Wheels - Scott TIME TRIAL MACHINE Owner's Manual

RIM TRUENESS AND SPOKE TENSION

For the true running of the wheel it is imperative that the tension exerted by the
spokes is distributed evenly around the rim (d). If the tension of a single spoke
changes, e.g. as a result of riding fast over a kerb or of a loose nipple, the tensile
forces acting on the rim become unbalanced and the wheel will no longer run
true. The functioning of the SCOTT bike may even be impaired before you no-
tice the wobbling appearance of a wheel that has gone out of true.
With rim brakes the sides of the rims also serve as braking surfaces (e). An
untrue wheel can impair your braking effect. It is therefore advisable to check
the wheels for trueness from time to time. For this purpose lift the wheel off
the ground and spin it with your hand. Watch the gap between the rim and the
brake pads. If the gap varies by one millimetre or more, you should ask your
SCOTT dealer to true up the wheel.
WARNING
Do not ride with untrue wheels. In the case of extreme side-to-side wobbles,
the brake pads of rim brakes can miss the rim and get caught in the spokes!
This normally instantly jams the wheel and throws you off your bicycle.
Loose spokes must be tightened at once. Otherwise the load on the other
spokes and the rim will increase.
NOTICE
Truing (retruing) wheels is a difficult job which you should definitely leave to
your SCOTT dealer (f).

CARBON WHEELS

As carbon wheels are made of carbon fibre reinforced plastic they come with
particular aerodynamic properties and low weight.
In case you want to mount carbon wheels, ask your SCOTT dealer for advice.
ROAD BIKE | OWNER'S MANUAL 2021
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ENGLISH 75 |