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AERONUTS
Remove the flybar and upper blades from the upper rotor. This tutorial assumes that
the user is familiar enough to be able to remove blades without further instruction.
Gently pull the cap at the end of the outer drive shaft that holds the bearing for the
inner drive shaft.
Gently remove the linkages from the lower blade
’
s ball joints. This can be done with
your fingers, however ball link pliers will make this task easier and reduce the
likelihood of inadvertent damage to the links and ball joints.
The lower rotor head is affixed to the outer drive shaft by four screws. As with the
retaining collar step, back the screws all the way out, then screw them back in
slightly to prevent loss of the screws.
Replacement lower rotor heads do not
currently come with new screws.
As a note for reassembly, the upper screws of the rotor head must align and set into
the holes of the outer drive shaft.
This photo, and the one that follows, were posted by LRHann. He recommends to
mark the outer drive shaft with a sharpie horizontally at the top of the rotor hub, and
vertically in line with the set holes. This makes lining up the screws easier during
reassembly.
