GRAUPNER heim UNI-Mechanik 2000 Mode D'emploi page 72

UNI-Mechanics 2000
Connect the swashplate servos to the swashplate to produce a 120º linkage, using the
previously prepared pushrods.
A four-point swashplate linkage is also possible, but you will need to use your own discretion for
the detail solution. In this case an additional servo is installed in the vacant servo aperture in the
mechanics, and should be connected to the front linkage point on the swashplate by means of a
2.5 mm Ø pushrod which will need to be angled for clearance. In this arrangement the pushrods
from servos 2 and 3 are connected to the lateral (90°) linkage points on the swashplate. You will
need to activate the swashplate mixer for a four-point linkage at the transmitter.
If you wish to install a four-point linkage, please pay particular attention to accurate adjustment
of the linkage pushrods, otherwise the servos may place strain on each other. This is the
procedure: with the radio control system switched on, set the collective pitch stick to centre (the
servo output arms should be at 90º to the pushrods), then disconnect one pushrod. Now adjust
the remaining three pushrods until the swashplate is exactly horizontal. When you are satisfied,
adjust the length of the fourth pushrod so that it can be pressed onto the linkage ball on the
servo without causing any movement in the other pushrods.
26