Etac Sting Manual page 21

9 Driving technique, settings manoeuvring
9:8 Adjusting the centre of balance
The centre of balance can be adjusted
by changing the position of the rear
wheels.
- Remove the axle shaft and its
washers and move the back axle
forwards or backwards as per
point 6:7.
Also adjust the brakes, see
point 6:8.
Tools: 21 mm socket spanner
When the position of the rear wheels
is moved forwards the wheelchair
becomes much more manoeuvrable,
but the tendency to tip backwards
increases.
9:9 Handrims
Sting is delivered as standard with alu-
minium handrims. The way in which
the user is able to grip the handrims
is influenced by the handrim's mate-
rial and its distance from the wheel.
Stainless, friction-coated, cellular
rubber and plastic coated handrims are
available as options.
The optional handrims give a
better grip, but also increase
friction.
It is therefore important to
remember that when stopping
suddenly, friction burns (e.g.
blisters) may occur.
Be aware that when passing
through narrow spaces here is
a risk of getting your fingers
caught. There is also a risk of
fingers getting caught in the
spokes.
(!) The centre of balance is also
altered when the seat and/or
backrest angle is adjusted.
We recommend the use of anti-
tips.
Check carefully that the rear
wheels are securely mounted,
see point 6:6.
If there is a risk of the user's
fingers getting caught in the
spokes we recommend spoke
guards.
21