DE9015/1 Mk.2 MCBT
DE9015/1 Mk.2 Motor-cycle brake tester
TECALEMIT User manual
8
4
MOT regulations
•
The efficiency of each system operated by a single brake control is the ratio of the retarding force
generated by that system divided by the weight of the machine and the rider.
•
Most machines have two controls, one operating the front wheel brake and the other operating the
rear wheel brake.
•
Where a linked or dual system is operated by one control, the retarding force used in the efficiency
calculation is the total from both wheels when operated by that control only. In this case the other
control will probably operate on one wheel.
•
Efficiency calculation:
Total retarding force for one system
Efficiency % =
x 100
Weight of machine plus rider
The MOT brake efficiency requirements are specified as:
•
Minimum brake efficiency of not less than 30% when one of the brake controls is operated.
•
Minimum brake efficiency of not less than 25% when the other brake control is operated.
•
Minimum brake efficiency of not less than 30% when only one means of operating the brakes is
required for motor-cycles registered before 1 January 1927.
Source: The “MOT Inspection Manual Motor Cycle Testing, 1992 edition”
•
The Department of Transport allows the use of an electronic calculator to perform the calculation of
brake efficiency.
•
The brake force is indicated in
kgf
.
•
The weight is indicated in
kg
.
•
The brake efficiency is indicated in
%
.
•
The first brake control system is called
BC1
(usually the
hand brake
control system).
•
The second brake control system is called
BC2
(usually the
foot brake
control system).
