Topping Lift Vibration

[priscilla]

Aac is right, take the tension off the topping lift...its that simple!

[FSMike]

cktalons -
Used to have the same problem on an infrequent basis. Sometimes we could cure it by increasing the tension, otherwise we gave up and ran the main halyard to the end of the boom and used it for a topping lift. That made me think that a larger diameter topping lift would fix the problem, but we never got around to it before the boat was sold.

[MarkSF]

I have a bungee cord that secures the boom when at rest, goes around the backstay. A second one out to the shrouds stops the main halyard from banging against the mast.

[chris_gee]

The topping lift vibrating and making a noise is fairly common when the wind speed is such to set up a harmonic with the length and tension. You can vary the length slightly by raising or lowering the boom and can vary the tension by tightening or loosening the mainsheet, to break the harmonic.