It is therefore possible to control the speed of the forward and the rear dynamometer independently from each other. All 3 CRP dynamometer types have separate driveshafts for the forward and rear dynamometer to facilitate the connection of two motors. Alternatively, the two driveshafts can be connected through a gearbox normally with a transmission ratio of1:1 so that it is possible to drive both the forward and the rear dynamometerat the same speed in opposite directions, from one motor.
....
