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15.2.
Gradients
Bear in mind that, when turning around on a steep hill, you will pass through a
crosswise position first before the turn is completed. Whilst in the crosswise position,
there is a risk of slipping sideways down the hill. Both you and any assisting person
should be aware of this risk and counter steer accordingly.
As a safety precaution, always ask a person to accompany you when manoeuvring
down a slope. Bear in mind that slowing the wheelchair using the hand rims generates
a great deal of heat between hands and the hand rim itself and can lead to burns on
the palms of the hands. Therefore proceed cautiously when braking manually and,
most importantly, when travelling downhill, never go faster than walking pace.
Leaning backward improves stability and increases rear wheel downforce, thus also
improving braking efficiency.
15.3.
Climbing obstacles
Any obstacle, such as a curb or threshold, should be viewed as a potential source of
danger. This is due, in part, to the very short wheelbase of the wheelchair. To climb
an obstacle, ask an accompanying person for assistance.
Should you wish to negotiate such an obstacle with the help of an accompanying
person they should not attempt to lift the wheelchair completely. It is important that
they make sure that the rear wheels stay in contact with the floor all the time.
To overcome an obstacle (e.g. driving over a curb), first tilt the wheelchair just
enough to lift the front wheels. Slowly lower the front wheels onto the obstacle and
then push the wheel chair on until the large wheels are resting against the edge of the
obstacle. Finally move the chair onto or over the obstacle.