Full instructions to build the OPUS rig are available HERE
For further information on tuning your OPUS rig see the ARTICLES page.
This sail rig will plug straight into the Banshee hull. It is a good size for light to medium
winds. Drop the "mast" pivot into the tube in the hull, make one rigging line connection, and it's ready to sail.
The OPUS rig was
inspired by the una rig on the Laser dinghy. The curved mast on the
Laser is shaped by the sail pocket. The OPUS rig
creates the mast
curve with a backstay instead which allows the mast to be shaped
independently of the sail, thus allowing some sail
camber control.
There is little to no flex at the base and boom mounting so all of the
flex and gust reaction is handled by the flexible
carbon mast and the
sail itself.
Mast height above deck..... 24" (610mm)
Boom length.................... 12 1/4" (310mm)
Sail area......................... approx. 140 sq.in. (9.04 dm.sq.)
Weight inc. sail............... 0.6oz (19g)
model designs, are the sole property of McAllister Models & Design
Copyright 1997-2024 by Graham McAllister