in automobiles, a differential is located between the
wheels. The differential’s housing is driven, and the differential
transfers the drive to the wheels through its two output
axles. Note that the differential transfers the drive from the
housing through the central bevel gear, which is meshed
with bevel gears on the two axles. The central bevel gear
can balance the drive between the output axles, meaning
that it can drive one axle faster than the other. This ability
to balance the drive enables the vehicle to turn smoothly.
Figure 8-2 shows that the wheels of a turning vehicle travel
along different arcs. As a result, the inner and outer wheels
have to travel different distances. A differential is able to
balance this difference by driving the outer wheel faster than
the inner one.
As ready-made LEGO differentials are torque sensitive
and rarely appear outside of big, expensive sets, we can
build our own differential using a large Technic turntable,
as shown in Figure 8-3.
This kind of custom differential is much larger and much
sturdier than a ready-made one. Using a turntable allows the
mechanism to transfer drive to the differential without using
bevel gears and instead using the much stronger knob wheel.
in automobiles, a differential is located between the
wheels. The differential’s housing is driven, and the differential
transfers the drive to the wheels through its two output
axles. Note that the differential transfers the drive from the
housing through the central bevel gear, which is meshed
with bevel gears on the two axles. The central bevel gear
can balance the drive between the output axles, meaning
that it can drive one axle faster than the other. This ability
to balance the drive enables the vehicle to turn smoothly.
Figure 8-2 shows that the wheels of a turning vehicle travel
along different arcs. As a result, the inner and outer wheels
have to travel different distances. A differential is able to
balance this difference by driving the outer wheel faster than
the inner one.
As ready-made LEGO differentials are torque sensitive
and rarely appear outside of big, expensive sets, we can
build our own differential using a large Technic turntable,
as shown in Figure 8-3.
This kind of custom differential is much larger and much
sturdier than a ready-made one. Using a turntable allows the
mechanism to transfer drive to the differential without using
bevel gears and instead using the much stronger knob wheel.
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