Further the calculation for the overall gear ratio

Further, the calculation for the overall gear ratio was explained, which is simply the speed of the
first gear over that of the last gear. The class also learned how to use a speed reducer catalog
and compare thermal ratings of those reducers.
Real World Applications:
The application that comes to mind most immediately for gear trains is the transmission
in a car. The set of gears in the transmission allows for the engine to produce the same amount
of power but shift gears to generate higher speeds in the wheels. Gear trains can also be used in
many other applications, such as for conveyors in a factory or even small wind-up toys.
Lab
1. Calculation of gear ratios using Job Master Trainer.
Gear
Specification
Gear Type
Number of
Teeth
Pitch
Diameter
Diametral
Pitch
Gear Ratio
for pair
H2472 Spur 72 3 24
4:3
H2496 Spur 96 4 24
L112Y Bevel 24 1.5 16
1:1
L112Y Bevel 24 1.5 16
H1616R Helical 16 1 16
2:1
H1632L Helical 32 2 16

Speed
Gear Pair 1 Actual Velocity
Ratio
Theoretical
Velocity Ratio N1 N2
4 19.5 15 1.3:1 4:3
5 30 25.5 1.18:1 4:3
6 36 27 4:3 4:3
Speed
Gear Pair 2