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Zzzzzz said..lydia said..
You are actually losing sail control as you can not adjust quick enough.
These are small boats so sleve the boom at the vang, double the vang purchase and use a single fixed main sheet take off. And just vang sheet if you'd want to get rid of the traveller
Or go to a rope bridle.
Thank you for your reply Lydia , I have to go to the mast to use the vang do not so quick , please excuse my naivety but does the vang do the same job as the track ?
Hiya Zzzz,
Vang sheeting is more relevant when you have no/limited traveller.
The vang, like your mainsheet, sets the mainsail twist and leach tension.
Say you have no traveller and you bear off a close hauled course and crack sheets. As you ease your mainsheet to orient your sailplan to the new wind direction (keeping the airflow attached to the back of your mainsail) the boom will lift, leach tension decreases and the top of the main twists off, robbing you of power.
But by sheeting on the vang before you ease the mainsheet, the boom cannot lift, leach tension is maintained and the top of the sail is tight and drawing.
Ergo, by vang sheeting your mainsheet replaces the traveller, and the vang replaces the mainsheet.
As the vang connects to the boom much further forward than your mainsheet, the loads are nearly double, hence why you sleeve a weak boom and use big blocks if you intend to use vang sheeting.
Edit: if you are vang sheeting, you need the control line in the cockpit on a winch (loads are higher than your mainsheet). It would be very difficult to use effectively if you have to run to the mast to control.
Cheers,
SB