616 chapter 66
CASTERS
cross bar
(1 1/2” x 1/4”)
Weld
extension
bar to
cross bar.
extension bar
(1/2” x 1/8”)
Weld caster
bolt to
extension
bar here.
BACK VIEW
Two back casters are more
stable and make it easier
for the wheelchair to go
up curbs.
machine
screws
caster wheel
This backward
extension distributes
weight better and
keeps chair from
tipping backward on
hills.
For brake designs, see p. 601 and 623. For other pictures and models of the
Healthlink wheelchair, see p. 526, 592, 600, 601, 604, and 624.
RE-BAR AND WOVEN PLASTIC WHEELCHAIR
Weave back, seat,
and footrest with
ribbon, local wicker,
cane rattan or
polyethylene plastic.
Or use thin, lightly
stretched strips of
car inner tube, or
canvas webbing.
sealed bearing
hub and fork
SIDE VIEW
support
cross bars
‘Re-bar’ is steel
bar for reinforcing
concrete, sold with
building construction
supplies. Use 1/2”
smooth re-bar.
welded
axle nut
For front fork and casters,
use factory made casters or
make your own (see above,
and p. 597, 619, and 623).
SLIDE-OUT FOOTREST
kick-pegs
weld guide
tubes
slide-out
footrest with
kick pegs
woven
plastic
For axle designs see p. 597, 598, 615, and 623.
used bicycle
wheel
(20” x 1 3/4”)
wood wheel (5” x 1 1/2”)
with ‘tire tread’ cut
from an old car tire
MATERIALS NEEDED
•••••
1/2” re-bar (4 1/2 meters)
inner tube strips
bicycle wheels (2)
front casters (2)
webbing for seat
Disabled village Children