Tabernacle Thanks , I will be up in Santa Cruz this weekend, ty .
[Thanks Mark , I will be up in SC on Sunday , I know the bridge !
All the best.
TJA
QUOTE=Mark F;77440]Hi Mark,
In general a fractional rig would be no different than a masthead rig when designing a tabernacle system for a deck stepped mast. The only issue might be an aft swept spreader. With the spreaders angled aft and no backstay I usually see the mast dropped aft rather than forward like a straight spreader/backstay rig.
If you are tabernacling on a regular basis the furler needs to be plastic (flexible), something like a CDI or Schaefer Snap Furl.
A couple of important design areas are; a "hinged" section in the upper shrouds - inline horizontally with the mast base pivot point and a bridle to hold the boom centered when lowering the mast. The bridle goes from the aft end of the boom to the "hinged" point on the uppers. You also need to have a disconnect in the backstay that reconnects with the aft end of the boom and a way to release the aft lower shrouds. Oh, and a block and tackle (mainsheet?) or winched line connected to the end of the boom to lower the mast.
Here are a couple of photos of the upper shroud hinged point that I am trying to describe
View attachment 11636View attachment 11637[/QUOTE]