Calculating the required tractor characteristics


Designation	Unit	Description	Determined values
T_L	lb (kg)	Tractor tare weight
T_V	lb (kg)	Front axle load of the operational tractor without mounted implement or weights
T_H	lb (kg)	Rear axle load of the operational tractor without mounted implement or weights
G_V	lb (kg)	Total weight of front-mounted implement or front weight
G_H	lb (kg)	Permissible total weight of rear-mounted implement or rear ballast
a	ft (m)	Distance between the center of gravity of the front-mounted implement or the front ballast and the center of the front axle
a₁	ft (m)	Distance between center of the front axle and center of the lower link connection
a₂	ft (m)	Center of gravity distance: Distance between the center of gravity of the front-mounted implement or the front ballast and the center of the lower link connection
b	ft (m)	Wheelbase
c	ft (m)	Distance between the center of the rear axle and the center of the lower link connection
d	ft (m)	Center of gravity distance: Distance between the center of the lower link coupling point and center of gravity of the rear-mounted implement or rear ballast.

Calculate the minimum front ballast.
Calculate the actual front axle load.
Calculate the actual total weight of the tractor-implement combination.
Calculate the actual rear axle load.
Determine the tire load capacity for two tractor tires in the manufacturer specifications.
Note the determined values in the table below.

IMPORTANT

Risk of accident due to implement damage caused by excessive loads

Ensure that the calculated loads are less than or equal to the permissible loads.


	Actual value according to calculation			Permissible value according to tractor operating manual			Tire load capacity for two tractor tires
Minimum front ballast		lb (kg)	≤		lb (kg)		-	-
Total weight		lb (kg)	≤		lb (kg)		-	-
Front axle load		lb (kg)	≤		lb (kg)	≤		lb (kg)
Rear axle load		lb (kg)	≤		lb (kg)	≤		lb (kg)