6
HD Motion
|
Technical Information
2.1 Chassis construction
HD Motion has a chassis constructed of three interacting frames; wheel frame, seat frame, and back
frame. These are attached to each other at a number of points and create the desired geometry for
balance, recline, and seat tilt. The wheel frame and seat frame are connected at a point with some
adjustment possible.
Adjustment of seat tilt and back recline are done with cable controls (11 in Figure 1) which are placed
on the push bar.
The two models, 22 and 16, have identical chassis except for the wheel frame, where the brackets for
wheel attachment and anchoring are different.
2.2 Chassis configuration options
The HD Motion chassis can be modified to change several basic characteristics of the wheelchair.
The standard configuration is the reference point for all specified data regarding characteristics,
functionality, measurements, and testing against relevant standards. Changes to the configuration
of the wheelchair come with both positive and negative consequences. Therefore the standard
configuration should be used wherever possible.
The following modifications can be made:
• Seat frame length, to achieve different seating depths. The type of wheelchair chosen when
ordering determines the length, it cannot be modified later.
• Seat width can be adjusted by re-positioning the armrest mounts, see section 3.7.
• The tilt position of the seating unit can be adjusted, see section 2.5.
• Fixed back angle between 90° and 105° can be set by replacing the gas spring with a rod, as
described in section 2.8.
• Seat height can be raised with an adapter, see section 2.11.
• Wheel mounting position has 3 possible settings. This determines the stability and driving
characteristics of the wheelchair. See section 2.12.
• Size of drive wheels.
Model 22: 22” is standard. 20” or 24” can be used. See sections 2.11, 2.13, and 2.14.
Model 16: 16” is standard. This cannot be changed.
• Change of camber angle. Affects stability and driving characteristics.
