Understanding mainsheet trim on a high performance multihull
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- Опубліковано 5 жов 2024
- Shayne on his personal crusade to improve the mainsheet systems of every multihull on the planet! Check out more #gunboat footage from his latest delivery job and join in for an impromptu lesson on how to trim the mainsail on a multimillion dollar performance catamaran. These really are amazing boats!
If you enjoyed the lesson on sail trim make sure you check out our video on trimming a spinnaker downwind • How to trim downwind s...
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Sooo refreshing to have someone explain how to sail a performance cat rather than 20 minutes of "look how much storage there is" Lots more please
What a weapon, nice explanation,
Them internal cockpits are the go especially in that part of the world
The inside helm is great most of the time. Is dose tend to get a bit hot and stuffy in the tropics when you have to close the front end up due to wind and waves.
Grade A content on this one! More of these lessons would be epic
Glad you liked it👍there is another one coming up next week showing the comparison. In the meantime here is a downwind one 😉 ua-cam.com/video/w2YP07TPF9Y/v-deo.html
Nice now I know how to sail my gunboat 68.
Like the load cells on the shrouds, that's very cool.
Super cool thing to have, pretty much essential instrument on big multis now
Took me a second to realize you are on a gunboat! I was like damn he really upgraded his catana …. lol
Haha! If only.....
Ah, so not a fan of the double bridle/double A setup. Good explanation. I just need some powered winches for the traveler! Cool boat.
Getting ideas for the new boat? 😉
Haha! This one’s a little too small. Lol
You don't need two winches for the traveller, just a single antal line driver.
😂 nope not a fan of the double bridle mainsheet. Next weeks video I show how to trim the main the same way on our boat. Then it becomes very clear why I'm not a fan.
The Gunboat 68 is a very cool boat.
The line driver is good for the Cruising mode that I show, but the winches can't be beat when pushing a little more.
Cool to see this awesome boat in action.
Thank you very much for explaining things as you go.
I've often wondered if using dagger boards don't increase the rolling moment; perhaps you could talk about that in another video? Thank you.
Yes, they do. Exactly the same as the mini keels. Biggest difference is you can lift the dagger boards to get rid of the heeling moment, with mini keels you can't. This makes boats with dagger boards safer in winer and rough conditions.
Seems lately that there have been a lot of people praising the A Frame/Double Bridle Mainsheet system (which I struggled to understand), but I have not sailed with an A Frame so was starting to doubt my assumptions......thanks for adding some clarity......of course not really fair to compare much to a Gunboat, cheers
Yeah, it is one of those things if you say it enough and get enough other people saying the same thing, then it must be a good thing right?
I keep saying if it is a good thing we would use it in the race boat world. The fundamentals of sailing are identical racing or cruising, only difference is the need to beat the boat next to you is not there in cruising. Unless you are like me😂 and you all ways have to beat the boat next to you....
That is an awesome video! Thank you. What do think the pro's and con's are for the forward helm on a performance cruising cat? If you were designing a cat for yourself and family to sail around the world would you have a forward helm or twin aft helms? Would love your POV because you actually are an expert without some big conflict of interest either way!!!
If we were choosing something from existing designs, we would definitely choose twin aft helms on our round the world cruiser. You are completely exposed in a forward cockpit. There is a disconnect between the helm, mainsail trim stations and those working at the mast. You cannot easily look to see mainsail trim. And in most cases the forward cockpit space is way too small a workspace. The only time we have seen a forward cockpit done close to workable is on the Chris White designed Atlantic 72. We love the concept though...it just needs someone clever to come up with a good solution 😁
Mahalo. Info much appreciated.
Glad it was helpful!
thank you very much for so good information, now I don`t have to rebuild to "A" mainsheet l as I had in mind, I keep the traveler😂
Make sure you watch our next video coming out on Friday 😉
Vetus do a nice line in electric winches they have their own dedicated bus. This enables you to sync two winches together onto a single button and should be the answer to controlling your traveller. If I find an answer to sourcing the thousands of pounds it no doubt will cost I will also let you know, maybe start a UA-cam channel???:)
You don't need to go that far, since you're always going to be easing one sheet while winching the other on an A frame mainsheet system. Not as easy as with a traveler, but not rocket science either.
Curious what the solution to failed power / hydraulics is in the Gunboat? If you lose power, surely there must still be a manual way to control the sail plan?
have you come up with a plan to change the mainsheet to a traveller system on your boat?
Got a plan.... Just need the cash to do it all 😂😂
How do you tension the Forestay, Induce Mast bend - flatten the main - without backstay or runners ?
You don't bend the mast to flatten the main as you would in a yacht.
To produce forestay tension you rely on mainsheet tension.
In terms of inducing mast bend, the mast sections are so large you can't bend them as you would a thinner yacht mast.
Sailing upwind in a fast cat is completely different to sailing upwind in a performance yacht. In a cat it's all about simplicity and boat speed. Things like runners and backstays only add windage and slow you down more than the advantage of getting more tension in the forestay verses a yacht that gets stuck at hull speed upwind where you need every trick in the book to try and go that 0.1 of a knot faster.
Not buying the picking up the windward hull by where the mainsheet is lifting it from, certainly a hard sheeted main with the traveler down can still lift the windward hull through shroud load. May be a useful mental image for describing and visualizing the effect, no argument there, but that’s not mechanism.
Hull #3?
Damn that is a lovely boat, although you’d need to win a lot to afford it.
It is a super cool boat!
Yep, you need a traveler. The Catana set up is easy to build but shite to use.
Totally agree. You'll like next week's vid 😉
Explicit tutorial.
Thanks
Nice computer game
When do you start easing the vang? Would that be in a hotter reach?
No vang on a Gunboat.
@@youngbarnacles oh wow you just blew my mind I didn’t realise most performance cats don’t have a boom bang