I don't own a 42009 set (MK II crane). But I have modelled it in LDCad in order to understand how the set works. There is something I don't understand related to the actuators - as I don't have two pieces either I have come here to ask.
I see the two pieces of 61927 actuators attached to a gearing comming from one L motor, the gearing seeming to eventually produce a rotation for the two actuators in opposite direction. So, I expect them to be antagonic, meaning one extending and one contracting at the same time. What is wrong in my assumption? Where the rotation is synchronized for the two actuators?
So, why do they work in the same direction while they are turned in different directions at the same time? Or aren't they?