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Re: The more I learn, the less I know!
To be fair, he did emphasize SMALL hand tools.
I assume that tightening the rig so that it didn't go slack on Leeward in high wind would require too much constant stress on the rig and boat. The bungee trick certainly wouldn't hurt though. I'm going to tune using the method I suggested in post 97, and will report back on the gage tensions it develops. Should be interesting. Using Dedekam's stretch method worked well as far a boat performance, but read high on the tension Gage. On the other hand, the Leeward shrouds would still go slack in high winds. Do your shrouds never go slack?
As a Union Journeyman Carpenter with over 30 years in the trade , I can assure you that both the Union and Journeyman labels don't mean s**t! Worse yet, I have worked for several licensed Contractors who couldn't frame a wall to save their life, much less know if the job was being performed properly (and many "Inspectors" don't know much more)! So...given that the marine repair industry is less regulated than the building industry......
Do your shrouds never go slack?
In 20 knots or more wind my lee shrouds do go slack, but not by much. I would say they have near 0 load, but they are not swinging around. What I did (at the dock) is tuned my cap shrouds to 12%, lowers at 8% and backstay at 20% (the previous owner had it set to 20% so I just left it at that). On sailing everything looked good so I just left it at that. As others have stated, probably best to keep maximum load below 30% to fend off fatigue failures (most references seem to say go to 15% maximum tension on cap shrouds). I am thinking maybe I should back off the backstay as the forestay tension is probably around 25% at the dock (based on geometry calcs, since I cannot actually measure the tension due to furling jib). I would be concerned if my lee shrouds were swinging around a lot in a stiff breeze. Seems this could lead to fatigue failure very rapidly at the junction of a swaged or mechanical fitting and the wire.
A friend works as a "Rigger" for movie sets and I was talking with him how he got trained- he says basically on the job. Sounds similar to boat riggers. The two jobs have a lot in common. He is even giving me some advice on using a climbing harness to go aloft.
Last edited by casey1999; 04-06-2012 at 02:27 PM.