Electrolisis Chroe Moly against Aluminum

[rotorhed]

It's a service bulitin put out bythe factory. Another RAF pilot told me not to worry about it, just replace the blocks. Factory wants them done every 50 hours I think and I just thought steel would correct this problem, but since I have the aluminum on hand, let the experiment begin with that. If it cracks I'll go from there. Our club has a jb4 airframe with wheels, rudder, airframe, controls and rotorhead for sale for a grand if you know someone interested.