Mast Pumping on the Hard

[grzano]

Hi,

I was at the boat yesterday afternoon working on yet another project, installing a Gas Vapor alarm and blower control. Basically, if there are gas fumes, it sounds an alarm and turns on the blower. I think its a great safety install. Anyway, it was rather windy and I heard the mast pumping and vibrating throughout the boat. I've read the articles posted on the subject, but can not find any guidelines published by Pearson related to Standing rigging tension adjustments. I will not tune the rig on the hard, because it will change the minute its back in the water and the pumping could just be boat deformity on the hard which will go away once launched. However, I was wondering if there were any published guides on tension, other than 10-20% of breaking strength.

Any advice would be helpful.

Thank you,

Greg

[Dolce_Vita]

No useful advice.  When we got our p-323, the rigging was too loose, but the mast didn't pump.  As soon as I got it all tuned up, it started pumping in a crosswind.  This is not a problem at anchor because the boat (usually^*) points into the wind, but frequently happens in a marina, and sometimes even under way.  If you figure anything out, I'd sure like to know.  Couldn't find anything useful online.



* The exception is when anchoring in a current, as frequently is the case along the ICW.

[grzano]

Ed,

Once I pull the mast and replace the rigging in a month or so I plan on using a poured mast wedge style system. I'll let you know if that helps.

All the best,

Greg

[Dolce_Vita]

Be sure to thoroughly wax the inside of the mast partner before pouring the stuff.  Otherwise, it will be impossible to remove the mast later without destroying the plug. 

[grzano]

Excellent point. I would not have thought of that. I'll let y'all know how it turns out.

All the best,