Page 217 - Amphibionics : Build Your Own Biologically Inspired Robot

Amphibionics 06 3/24/03 9:02 AM Page 196
FIGURE 6.3
Tamiya twin motor
gearbox before Amphibionics
assembly.

Assembling the twin motor gearbox. Take all of the parts out
of the box and unfold the instruction sheet. The gearbox has two
possible configuration options of standard speed with a gear ratio
of 58:1, or low speed with a gear ratio of 203:1. The gearbox will
be assembled for use with the low speed option. The first thing
that needs to be done when assembling the gearbox is to position
a gear hub on each of the two hexagonal output shafts, as shown
in Figure 6.4. Thread a grub screw into each of the gear hubs with
the hex wrench that was supplied with the kit. Use piece M3 to set
the proper position of the gear hubs, and then tighten in place
with the hex wrench.

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