Help with mast extension

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5 years ago

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wgdrumsticks

3 posts

wgdrumsticks

3 posts

13 Sep 2020 2:46am

Hi, still newish to the sport. Can someone advise me what setting I need to have the mast extension at?

Mast = 460
Luff = 4.73m
boom max = 1.98m
imcs range = 24-27
imcs optimum = 25
Sail size = 7m

thanks

Will

LeeD

3939 posts

LeeD

3939 posts

13 Sep 2020 3:03am

Set it at 15 for high wind, 12.5 for light wind...tune to wind conditions.
For brand new sails, go down one notch.

wgdrumsticks

3 posts

wgdrumsticks

3 posts

13 Sep 2020 3:12am

LeeD said..
Set it at 15 for high wind, 12.5 for light wind...tune to wind conditions.
For brand new sails, go down one notch.

Thanks for your help

powersloshin

NSW

1855 posts

powersloshin

NSW, 1855 posts

13 Sep 2020 6:08am

Mast extension + mast length = luff length, then you can adjust downhaul +- depending on sail/conditions as Lee suggested.
In your case set your extension to 14, but when you downhaul leave the sail pulley 1 cm from the bottom of the extension. Consider also that sometimes the printed measures are not perfect and you need to look at the sail shape.

wgdrumsticks

3 posts

wgdrumsticks

3 posts

13 Sep 2020 8:12am

powersloshin said..
Mast extension + mast length = luff length, then you can adjust downhaul +- depending on sail/conditions as Lee suggested.
In your case set your extension to 14, but when you downhaul leave the sail pulley 1 cm from the bottom of the extension. Consider also that sometimes the printed measures are not perfect and you need to look at the sail shape.

Many thanks

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