Brief Description: Collective down stop, Rotor head install
Installed a 1-1/4" 1/4x28 bolt in the bottom of the collective pocket and set the head height at 7/8" from the bottom of the pocket for the collective down stop.
Cleaned the main rotor shaft and slid on the swash plate slider clamps and rubber droop stop. Applied anti-seize to the top of the shaft and inside of the rotor head collar and carefully worked it down onto the shaft, aligning the drive pin hole then inserted the small locking pin between the shaft and collar.
Removed the foil tape from the teeter bearing and cleaned off the tape residue. Clamped the wood blocks to the main shaft and set the head in place. Inserted the inner bearing races and used the provided alignment tool to line up the holes and carefully insert the steel drive pin. This took a lot of time since the pin is a very close fit and it stuck in the first bearing race so I removed the race and pin from the head and got it moving using the washers and the bolt that threads into the end of the pin. It wasn't stuck very hard but there is no good way to grip the parts without damaging the polished surfaces. Once the race was slid down the shaft a little further I was able to put it back in the head and lightly tap it on through with the plastic mallet.
There are 2 stainless and 2 delrin shims that go between the sides of the head and the collar on final assembly. I left these out for now since they are a tight fit and would add friction during static balancing of the blades.