Chassis Assembly
Light Sensors Find the two copies of the “light sensor plate” pictured on the right.
Hardware:
1 4-40 x 1” screw
1 4-40 nut
2 4-40 lock washers
4 4-40 flat washers
Stack items onto the screw as follows: lock washer, plate, 2 flat washers,
both light sensors (orient them the same way), 2 flat washers, the other plate
(oriented the same direction as the first plate), lock washer, nut. Tighten.
The picture below shows the bottom plate.
Hardware:
3 6-32 x 1 1/2” standoffs
3 6-32 x 3/8” screws
Attach the standoffs to the plate through the highlighted
holes, with the screws on the side with the etching.
© 2004 C. Saxton
Open the Tamiya ball caster package and retrieve the
following parts:
1 H3 (ball holder, triangular)
1 ball
3 shafts
1 H2 (triangular)
3 H1 (spacers)
3 3x15mm machine screws (longer ones)
3 nuts
Note that the package contains additional parts (for a
second caster and alternate configurations), but they are
not needed here.
Insert the ball into H3, and place the shafts on top of the
ball, parallel with the edges of the holder, as shown in
the upper left image in the picture below.
Place H2 on top of the H3 assembly, as shown by the
pink arrows.
Place the three H1 spacers into the indentations on H2,
as shown by the blue arrows.
Insert each machine screw from the “ball” side, up
through H3, H2, and a spacer. Hold the bottom plate of
the chassis with the standoffs on the top and place it over
the caster, inserting the screws through the holes
highlighted in the picture on the left. Fasten with the
nuts.
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