What good is a boom vang?

frick

Member III
Im not quite sure I agree with all this as stated. The main twist is controlled with a combination of main sheet and traveler (and vang also). When upwind you want your boom about centerline but you still want to twist the main to account for sheer or depower the top as needed To do that you need to raise the traveler and ease the sheet to allow the boom end up without letting it out. Racing we use the traveler almost exclusively to trim the main in/out to control helm pressure and deal with gusts, but dropping the traveler will increase your twist a bit, its all interconnected. And if you crank your vang in hard upwind (usually something to avoid) you'll get a flat untwisted panel for a main which can be trimmed with the sheet alone as if you were playing the traveler. This "vang-sheeting" is sometimes useful in super-gusty situations but is the best option for boats with no traveler (or broken traveler!)
The quick way to control the twist in the job is to move jibsheet car on the track... Take it back to make it flat when going to weather, move the car up to power up when going down wind.
 

Bepi

E27
The quick way to control the twist in the job is to move jibsheet car on the track... Take it back to make it flat when going to weather, move the car up to power up when going down wind.
Thank you! I now have one more piece of the sail trim puzzle.
 
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