Its purpose is to pull the aft end of the boom down when the mainsail is fuller and more twisted than desired. The kicker pulls the boom downwards. It can be used on any point of sail but is most useful on a reach. On the racing rigs, there might be a smaller line or wire that connects the vang adjustment line to the boom. Boom vangs from Vela at the best price. Win Design/Opti Parts Win Design #EX2134 Vang Boom Attachment Vang boom attachment, Class Legal Product Code: 773692556420 Price: Stock Type: Qty On Hand: Product Code: Qty. This obviously increases the loads on gooseneck and on the vang itself, but seem to be supportable for it is a pretty common geometry. Boom Vangs are primarily used to control the leech of the mainsail by restraining the boom from rising when sailing. A boom vang is a tackle system attached at a 45° angle between the mast and the boom. The stainless steel strap attaches to the Laser boom with four rivets. This helps eliminate excessive sail twist which when left uncontrolled can make your boat unstable with an increased tendency to roll in waves. The boom vang, kicking strap or kicker is an intricate set of pulleys (and, on yachts, a hydraulic ram) running diagonally between the boom and the lower portion of the mast. This setup is original to the boat, which was built in 1967. PS Attachment point on the boom location isn't all t hat critical, but many rigs have the distance from mast to boom attachment distance somewhat greater than boom to mast base distance. I don't have pictures but I hope this will help. Richard Boom attachment. Does not come with rivets. Boom vang plate for the ILCA / Byte. This will prevent it from riding over the vang peg toward the mast. Allows for quick attachment and removal of Boom Vang, raised channel design allows easy installation without milling slot in boom. The boom will rise with the sail as long as the main sheet and the boom vang are loose, eased off. Boom Vang Ball Attachment Plate for D-Section Boom: Sch 90-50X: Formed SS plate for attachment of Boom Vang with 1/8" wire swage ball. I have had the vang on hard enough to bend the boom to the point that I thought it might break and there has never been a problem.GregFlying Scot #1087 Pin For Attachment Hook Block Vang On Boom Laser Optiparts OP-2146. Clamp Steel Tilt For Fixing Mast Allen A4416. Garhauer includes in its price custom mast and boom fittings that are polished, beefy 316 stainless pieces with finely welded or machined components. It provides the attachment point for the boom vang key. $9.95 + $31.31 shipping. There are no indications that the vang bridle has been set up any other way. Raise the sail until the head board is at the top of the mast (actually within about 4" of the top). Channel projects approximately 3/8" from underside of Boom when installed. For more information on the Forespar Yacht Rods visit our Buying Guides section. $18.08 + $31.31 shipping. Boomkicker, Vang Master, and Schaefer. On the club rig it is just a simple line and it can be secured to the boom with two half hitches or a doubled turn bowline. $8.35 + $31.90 shipping. One design or custom built available. The white line with the red flecks is the boom vang bridle. The best boomvangs from Vela. Both vangs are intended principally to support the boom and both rely on 1½-inch diameter stainless steel springs — four in each case — to offer the resistance. Clevis Standard Attachment Vang On Mast Selden PM508-488-01. Next, add the boom vang.