JOKER EVOLUTION 7
2.2
Starting
to use your wheelchair
Finding the centre of gravity - the point at which the
wheelchair will tip back
Your ability to control and safely tip the wheelchair depends mainly
on your seating position and the location of the centre of gravity in
respect to the rear wheels.
The JOKER EVOLUTION model allows you to adjust the
position of the rear wheels (see chapter 6.4 “Rear wheels
adjustment”).
Remember that every adjustment to the rear wheels
affects the wheelchair's stability and could therefore
increase the possibility of overbalancing The correct
positioning of the rear wheels depends on many factors,
among them: the occupant's weight, type of disability and
ability to manoeuvre the wheelchair. The manufacturer
will supply the wheelchair with the rear wheels positioned
according to instructions given on the original order form.
Finding the point at which the chair will safely tip
back requires the presence of an attendant who must
be standing behind the wheelchair ready to prevent it
from overbalancing.
In order to find the point at which the chair will easily tip back
and, consequently, the range within which it is safe to manoeuvre
the chair, proceed in the follows (see fig. 3):
You are sitting on your chair. hold the hand rims on the rear
wheels firmly.
Then, move the hand rims slightly backwards and while
moving your weight backwards, push the hand rims forward
with a jerk and the front of the chair will rise.
At this point, by moving your body gently backwards and
forwards while moving the rear wheel backwards and forwards
using the hand rims, it will be possible to find the centre of
gravity and the point at which the chair will safely be
controlled.
IN ORDER TO PREVENT THE WHEELCHAIR FROM
OVERBALANCING DURING NORMAL USE WE
RECOMMEND MOUNTING ANTI TIPPER WHEELS
WHICH ARE SUPPLIED AS AN ACCESSORY TO
THIS MODEL.
(see chapter 7.3“Anti-tip wheels”)
2.3
Dealing with obstacles: stairs and steps
While getting over obstacles such as stairs and steps,
approach the obstacle at a moderate speed
Fig.3
