Reduction ratio of two gear wheels using number of teeth
First stage ratio
$$ i_{gr1} = {z_2 \over z_1} $$
This calculation calculates the gear ration of two gear wheels using the number of teeth.
- z1 - number of theeth of first gear
- z2 - number of teeth of the second gear
Reduction ratio of two gear wheels using number of teeth
Second stage ratio
$$ i_{gr2} = {z_4 \over z_3} $$
This calculation calculates the gear ration of two gear wheels using the number of teeth.
- z3 - number of theeth of third gear
- z4 - number of teeth of the fourth gear
Reduction ratio of two gear wheels using number of teeth
Third stage ratio
$$ i_{gr3} = {z_6 \over z_5} $$
This calculation calculates the gear ration of two gear wheels using the number of teeth.
- z5 - number of theeth of fifth gear
- z6 - number of teeth of the sixth gear
Reduction ratio of two gear wheels using number of teeth
Fourth stage ratio
$$ i_{gr4} = {z_8 \over z_7} $$
This calculation calculates the gear ration of two gear wheels using the number of teeth.
- z7 - number of theeth of seventh gear
- z8 - number of teeth of the eight gear
Reduction ratio of 4 stage gearbox
This calculation is for 3 stage gearbox:
- i_{gr1} - first stage reduction
- i_{gr2} - second stage reduction
- i_{gr3} - third stage reduction
- i_{gr4} - third stage reduction
Four stage gearbox ratio
$$ i_{gb4} = {i_{gr1} \cdot i_{gr2} \cdot i_{gr3} \cdot i_{gr4}} $$