Maths and science The general max range of outhaul adjustment from min to max is 3cm, 2cm is usually enough. The general max range of boom height adjustment is 12cm, but 8cm is usually enough. For every 2cm (20mm, 1/2 inch) of boom height adjustment you have 5mm of natural outhaul change- the recommended incremental adjustment. So if you raised your boom by 40mm (4cm, 1 1/2 inches) that automatically adjusts your outhaul by a staggering 10mm (1cm) which is basically the equivalent of giving yourself an extra metre of power! So next time you think about changing a sail size, think again, think Double Shot!
‘In 12cm of boom height change there is 3cm of outhaul change
The double shot switch
There’s three main opportunities to adjust your boom height: 1. Whilst blasting along come out of the footstraps and stand near the mast, quickly adjust the boom height and get going again without even getting wet. 2. If you’ve fallen off, during a waterstart you are right next to the boom so a quick adjustment is easy. 3. Come into shallow water and quickly make the change.
Summary Early planing- the high boom naturally released outhaul – note how the sail is so full it’s touching the boom? That’s great in underpowered conditions.
Control- the low boom naturally increased the outhaul and the sail no longer touches the boom.
I love the soft Muscle Memory approach to coaching, but there is even science behind that. When it comes to tuning, it’s physics all the way- please check out the Cribb Sheet for a non-fussy scientific approach to tuning.
Guy Cribb INtuition - Riding the World By Storm
The Cribb Sheet says it all.
©Guy Cribb INtuition 2012 Guy runs INtuition windsurfing courses attracting guests from all over the world for a week of radical development and fun only at the world’s very best venues from Australia, Brazil and Hawaii to Greece, Morocco and the Red Sea. The courses are always fully booked and have non-stop repeat offenders working their way up from waterstarting and footstrapping to riding massive surf in Hawaii. Guy transforms your windsurfing by day and shows you round the very best restaurants and local secret spots by night to give you a 24/7 action-packed INtuition experience that is incomparable to other holidays or courses. Guy is Britain’s Professional Windsurfing Coach, former multi-times British Champion and National Racing Coach. www.guycribb.com
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