Put a clamp around the mast, so it's sitting on top of the top thrust
bearing.
I would suggest using 2 x thrust bearings. one at top of tower, and
another 3-6' down the tower, with the PP below that.
On my rohn TB-4 thrust bearings (3" mast) the 3 x setscrews all rusted out
and seized up. The ball bearings also started to grind, water got in
there..and that was < 1 year.
The peer brand thrust bearings with the eccentric locking collar work
superb, but they also have to be greased. I use a pair of those type
thrust bearings on the UST crank up.
Putting a bit of weight on the rotor is to put some weight on the
internal bearing inside the PP. The mating splines are not going
anywhere. I also have kurts small PP. Globs of TQ. Takes 1 min + 50
secs to rotate 360 degs. Cap off the top of the mast, so water doesn't
run down the inside of the amst onto the PP.
DXE offers a real HD mast clamp that's superb. Comes in 2" - 2.5" - 3".
Jim VE7RF
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