660-R OPERATING INSTRUCTIONS
Page
18
CALCULATIONS
A rotary slide-rule type calculator is supplied with the unit and this should
be used to calculate the brake efficiency.
Alternatively a manual method can be used as follows:
Efficiency: Note the maximum brake force from each wheel in kgf, add
these numbers together and divide the result by the vehicle
weight in kg then multiply by 100.
This gives percentage brake efficiency.
Efficiency = (A + B + C + D) X 100 %
(Vehicle weight)
Imbalance: If brake forces on a particular axle are A kgf and B kgf
Assuming A is greater than B then
Imbalance =
A - B X 100 %
A
