Quote:
Originally Posted by osirissail
knuterikt - I very strongly suggest that you immediately remove the block you have in the second photo, the one that is attached to the starboard shroud turnbuckle. Instead install a folding ring eye or other deck attachment ring with a backing plate either on the cabin top or the side deck or your toe rail and mount the sheave there.
- - Attaching anything that puts a side load on a shroud will lead to bending that shroud's turnbuckle eyes/studs and additionally put side loads on the chainplate attachment to the deck and below-deck chainplate attachment points.
- - Crash tacking or accidental jibes will put large shock loads on the sheave you have attached to the starboard shroud. Over time such loads with result in bending of the turnbuckle eyes and additionally loosen the bonding material between the chain plate and the deck resulting in water being able to leak down into the cabin and inducing intragranular corrosion in the stainless steel chainplate as it passes through the cabin top.
- - If used long enough you can break the starboard shroud and lose your mast and standing rigging. All loads on the shrouds must be axial with the shroud cables/wire.
- - There are many different versions of pad-eyes that can be mounted on the cabin top or side deck or toe rail that will hold your sheave to assist in bringing the main sheet aft to the cockpit.
|
I discussed this setup both with my rigger and my sailmaker before attaching the above mentioned block. I have also seeen the same attachment used on new boats at boatshows.
After your post i discussed your concerns with my rigger, but he does not agree with you.