3. Installing the Firefly
Place foam blocks
Place the black foam blocks under the
wheelchair’s caster wheels while the
wheelchair’s parking brake is on. A wooden
block or stacks of hardcover books two inches in
height can be used in place of the foam blocks.
Installation must be done with the caster wheels
raised off the floor to provide safe clearance
while using the Firefly.
Install mounting clamps
The Firefly attaches to the wheelchair using two
mounting clamps installed onto the wheelchair’s
vertical tubes. Each clamp is secured using two
horizontal pins, onto which the Firefly attaches
using coupler plates. Attach the mounting
clamps onto the vertical tubes of the wheelchair
using the shims that provide the best fit
between the clamp and the wheelchair tube.
The clamps should be placed roughly 2/3 of the
distance up from the floor to the wheelchair
seat, on a straight section of tubing. Shims of
four different thicknesses are provided to
account for various diameter tubes, ranging from
7/8 in (22.2 mm) to 1.25 in (31.8 mm). The shims
must sit flush onto the wheelchair tubes, and
the clamps must sit flush onto the shims. Make sure the pins are facing outwards, away from the
wheelchair. The clamps must not obstruct the wheelchair’s parking brakes.
Level mounting clamps
Make sure the mounting clamps are level with each other by placing a long level on top of the two
clamps. If you don’t have a level that spans the distance between the two clamps, place a broom stick or
other rigid object on top of the two clamps, with a short level or mobile phone with a level app on top.
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