Section 3-Safety/Handling Of Wheelchairs; Stability And Balance - Invacare Arrow RWD Service Manual

SECTION 3—SAFETY/HANDLING OF WHEELCHAIRS
SECTION 3—SAFETY/HANDLING OF
WHEELCHAIRS

Stability and Balance

Changing the position of where the motors are positioned affects the weight distribution
over the rear wheels. The following contains information about changing the position of
the motors.
Rear Position - Lengthens the wheelbase and gives the wheelchair the most stability and
standard maneuverability.
Middle Position - Centers the wheelbase and gives the wheelchair standard stability and
maneuverability.
Forward Position - Shortens the wheelbase and increases maneuverability and distributes
additional weight on rear wheels.
*NOTE: The forward mounting position is not available on Arrow wheelchairs equipped with
gearless/brushless motors.
The following illustrations show the mounting screw location for each motor/gearbox
and gearless/brushless motor mounting position:
Rear Position
Front Position
Middle Position
Approximately 65% of
Approximately 75% of weight
Approximately 70% of weight
weight over drive wheels
over drive wheels
over drive wheels
FIGURE 3.1 Motor/Gearbox Mounting Position
Motor Mounting Positions
Motor Mounting Positions
Motor Mounting Positions
Middle Position (1 inch Forward)
Front Position (2 inches Forward)
Rear Position (Standard)
Approximately 70% of weight over drive
Approximately 75% of weight over drive
Approximately 65% of weight over
wheels
wheels
drive wheels
FIGURE 3.2 SSD Motor/Gearbox Mounting Position
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3G Storm Series® Wheelchairs Part No. 1104849