Upwind Mainsail Trim: Shaping your Sail, Part 2 - Camber

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Welcome to our video series on upwind mainsail trim, presented by SailZing.com. Today's topic is Camber, which is part 2 of the unit on shaping your sails. In this series we're distilling lots of technical material into clear explanations using a visual approach.
Here are some links to our website related to camber:
Lift and Drag - Prevent Common Sail Trim Errors sailzing.com/prevent-common-s...
Velocity Made Good sailzing.com/velocity-made-go...
Here's a link to a free download of sail measurement software from SailPack
www.bsgdev.com/CMS3/index.php/...
Thanks to Will Hendershot for photos and his help in preparing this video. Material was gathered from A Manual of Sail Trim, by Stuart Walker and Illustrated Sail and Rig Tuning, by Ivar Dedham.
Visit SAILZING.com for much more content to help you to sail faster and smarter.
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Опубликовано:

20 июл 2024

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Комментарии : 21

@alehuneeus 4 года назад

Great material, appreciate the depths you reach in these topics!

@SailZing 4 года назад

Glad you like them!

@dieselzheng8641 4 года назад

Treasure-like content，thank you so much for sharing！

@SailZing 4 года назад

Thanks for visiting

@davidncw4613 3 года назад

"Treasure-like content，thank you so much for sharing!" Agreed!

@SailZing 3 года назад

Glad you enjoyed it!

@bugstream 2 года назад

Great video, thank you !

@jfly609 4 года назад

Thank you Very educational and understandable

@SailZing 4 года назад

Thanks for watching!

@leviharper6797 4 года назад

In the very light air condition, which control or controls would you use to reduce the camber to maintain leeward flow over the sail? I'm assuming you would use outhaul first and maybe a little vang instead of mainsheet to maintain some twist in the sail. Also, considering often there is greater wind above the surface, would you aim to have more camber in the top of the sail relative to the bottom? Thanks really enjoying your videos.

@FastForwardSailing 4 года назад

Great video chaps

@SailZing 4 года назад

Thanks for the feedback!

@chsemaphor 3 года назад

Very good, thank you!

@SailZing 3 года назад

Glad you liked it!

@wilfdarr 4 года назад

Thanks for making this!

@TheOlandex 3 года назад

Great content - thanks for sharing! You mentioned "aggressively" reducing camber when overpowered. Would you consider reefing as part of that strategy? And if so, I assume you'd recommend reefing early? Of course, this is in the context of cruising not racing. Thanks!

@SailZing 3 года назад

I don't have experience with reefing, but yes - anything you can do to reduce power is good. I have had racing sailors tell me that they tried a smaller racing sail (cut smaller than the class limits) in big breeze and were able to hang in with the heavier crews that kept their bifg sails up.

@RomainLagrange1 2 года назад

reduce the camber for a puff (try to be proactive before the puff), but take a reef if the constant wind already overpower your boat. For cruising, you would want to be always a little underpowered, so the puff or gall are not too scary for your crew. This will also save power for the autopilot.

@TheDesertSailor 2 года назад

The summary on the last slide contradicts the slide at minute 7:06... I am confused. LIGHT air. Increase or reduce camber??

@RomainLagrange1 2 года назад

Landing is light wind (low speed) with high camber to prevent stalling (higher lift), and you also intentionaly create more drag to slow the plane during descend, when gravity would speed you up. Pilot would reduce flap if his flight is too short for landing, cause it nearly work as a air break. Also remember, it's the sail camber in this vid, not the mast camber. Increasing the mast camber reduce the sail camber which can confuse your crew :)