User manual of Tilty
page 23 of 43
8. Wheels
8.1 Driving wheels
Fundamentally, the driving wheels are nearly the most delicate parts of the
wheelchair because many factors concerning your safety and the wheeling
performance depend on them!
In this connection, once again we have to point out politely, yet insistent, that the
safety precautions are most important!
•
In case the wheelchair is equipped with pneumatic tyres, please regularly
examine the air pressure (at least every 2 weeks) because the functional
performance of the brakes depends on them! You’ll find details concerning
the required air pressure on the outer tyre.
•
Examine the tyres’ tread regularly because a bad tread will not only affect the
functional performance of the knee lever brake, it may even be completely
eliminated in unfavourable circumstances.
•
This is also valid on puncture resistent tyres!
•
Examine regularly (at least every 3 months) if the spokes are tightened
properly. If necessary, have the spokes re-tightened by your medical service
centre, otherwise the wheel will be a danger.
•
The grip ring’s screws may loosen themselves as they are strained too much.
Then the grip rings as well will be a considerable danger because they may
come off and the wheelchair may not be braked down. Hence, also
examine if the grip rings are tightened properly at least every 3 months and if
necessary, have them re-adjusted by your orthopaedic mechanic engineer.
•
Please also examine if the spoke covers, if equipped with, are firmly fixed!
Loose ends may result in injuries of your child’s hand. If you need the required
clips or cable fixers, ask your medical service centre or just give us a call, we’ll
send them right away; service phone +49 7254-92790.
8.2 Grip rings
Strong friction will easily heat up aluminium grip rings. Some gloves are surely a good
aid yet your child’s wheelchair may also be equipped with a grip ring coating, even
if the chair is equipped with rehavolution wheels with integrated grip rings.
On standard wheels, the grip ring extension and its distance towards the wheel rim is
a variable feature. For this, the tyre must be removed from the wheel and the grip
ring screws on the rim must be loosened. Then re-assemble the screws in the
needed position and put the tyre back onto the rim. Please take special care that
the rubber band covers the screw heads otherwise the air tube may be damaged.
