correct amount of tension of screw holding main gear onto shaft?

[matthewcornell]

Hi All. I that found the screw that holds the main gear onto the shaft was a little loose, so I tightened it down. However, I don't know how far to go. I could keep bearing down on it, but I don't want to warp it. As an experiment I mounted an old one and tried it. I've attached pics where you can see the one that's very tight has flattened out into a slight ellipse. The other is lightly tightened. My question: How tight do you make yours? Thanks!

[DoubleCH]

I just hand-tighten that lower jesus bolt. The nylon nut will keep the bolt from loosening up. Regardless of how tight that bolt is you can still turn main rotor back-and-forth a bit while holding main gear anyways.

[Dr. M]

I tighten until the nut makes contact with the main pulley and no more. You can tell when this happens by wiggling the bolt fwd and back with your driver and feeling the resistance of the nut friction against the plastic.

[matthewcornell]

Ok, thanks you two.