[TowerTalk] How to weather seal a Tailtwister rotor?

[Marshall Goldblatt]

Hello all,

I have a Tailtwister (TX-2) rotor mounted on a Rohn 25 foldover tower. 
While the tower itself appears to have survived intact, hurricane 
Katrina snapped the mast and destroyed the antennas.  I need to fold the 
tower over to work in it, and likely leave it folded over for a fairly 
extended period.  This will leave the top of the tower and the rotor 
upside down.  Unfortunately, it is still the rainy season here, and the 
last time I needed to do this, rain water got into the rotor and settled 
in the bell, causing rust and other corrosion damage inside the rotor, 
because it is only weather protected when it is upright.  I would like 
to seal the rotor while the tower is folded over to prevent this from 
happening again, but none of the ideas I've had so far (wrapping it in 
plastic garbage bags, using duct tape, using sealing foam) are usable, 
either because they don't seal well enough to keep water out or because 
sealing stuff may get up inside the rotor where I can't get it out.

So, does anyone have any suggestions?

73, Marshall - W4EMB