Originally Posted by
jmorrical
Loctite 680 it is.
On page 54 of the Fuselage Manual it tells you to test fit the rear mast on the torque tube with the rear block set in place. I thought since the rear mast came off once I could fit it on and off for the test. Wrong! The first fit got stuck and it took a while to get it off. Mitch suggested using some 620 grit sandpaper, not too aggressively as to keep a close fit, to take a little off the torque tube. I did that and tried again. It got bound up again after I pushed it on about 1/2" It was locked up, frozen, stuck... I was once again STUCK and frustrated! I'm just glad I hadn't used the Loctite yet. It bound up and I didn't have the hand strength to just twist and slide it off because of the position of the assembly and the cockpit floor.
A friend suggested penetrating oil. Thankfully that worked. I guess I'll sand some more and try again. Any other suggestions.
Troy how would you debur the inside of the holes on that rear mast? I have run my finger over the holes and they seemed fine, but I suspect that could be part of the problem.
One other issue bothers me about my torque tube installation so far. When I got the front torque tube bushings and stiffener torqued in place it felt to me that roll movement force required to rotate the tube would be way too stiff. How do you tell if it's too stiff? Mitch suggested I might need to fabricate and install a very thin aluminum shim between the top and bottom bushing. Any recommendation?
Jim Morrical