Lots of twist and a tight leech ,
I think i like it
Id be a great tester for the very average sailor .

Its sounds really good, just looks real ugly

I wonder how it critical downhaul (and outhaul) would be to correct set and wind range compared to other sails?

If things work well, one can get used to ugly pretty quickly

Clarence

An ordinary sailor needs to test it and report back.

Been done before by Gaastra in 1995

Been done before by Gaastra ( William Blaauw ) in 1994.

And by Simmer

I remember those now. Looking at the top batten on the Gun sail it seems to extend further than the GA sail where the simmer has no real loose leach at all, maybe it could it be an improvement?

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Sparky said..
And by Simmer

I was looking for a picture of this sail.
The simmer came before the gaastra total flow, and won a world tour event in England ~1996. The mast went all the way to the top and it was a success in marginal conditions, but couldn't handle things too gusty. It could have used some extra leech to twist off.
The gaastra total flow had a short mast and the red tip was made up by some carbon rod setup I think.

This gun sail looks like an evolution of the simmer with better mast technology (22 years later) and more leech

This was the Gaastra Total Flow I still Sail them , bottom of mast is very stiff and tip soft .

The event in England mentioned above was Brighton in September 96, with Anders Bringdal frustrating everybody in extremely light winds. Whether it was down to the sail or his skill I don't know but I can proudly say that I was one of the first people to set eyes on the thing.
The day before the race Anders gave me a long Interview for a university thesis I was working on. Very friendly bloke, full of knowledge and willing to pass on whatever he can. He kept fine-tuning his gear throughout the two hours he answered every question I could think of.

Then he suddenly said:
"I,ve got a sail , if see this, you're gonna die." and pulled out the bright red sail with the flexy top with which he won the race the next Day.
A Day I remember as vividly as it had been yesterday .
Cheers,
Sven

Just found this as I didn't take any pictures then for lack of a camera:

I wonder how the friction bearing would go on a normal sail?

Peter B sailed the Gun bow sail at the September 18 formula foiling world championships in Portugal. It wasn't conspicuous in terms of results. portimaoworlds2018.internationalwindsurfing.com/gallery/videos#2 shows Steve Allen pumping his way around the course...

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choco said..
I wonder how the friction bearing would go on a normal sail?

I think it would work good even on a rotational sail.
However,
I'd like to see how it's clamped to the mast and not slip down while still rotating .
and
how does sand work in a friction bearing , less frictionary I'd suppose.

gunsails.com/en/bow-flex-70

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clarence said..

If things work well, one can get used to ugly pretty quickly

Clarence

And then we'll look at a retro sail lying on the beach and think "what a crude way to achieve twist back in the day". Maybe when twist was identified as a good thing the original design parameter was that it had to work on the masts we already had?

Yeah it looks very promising

One of the design problems for windsurfing is that we need a lot of power to get onto the plane and then all of a sudden we get all this apparent wind and we then need to shed power. so this design should solve this in a better way.
Foiling accentuates this problem and so its probably a good time to bring these designs back.

Another frustration is the industry sells us masts with every 30cm increments. This range from GUNSAILS is one mast only

And so with these sails powering up and depowering more there should be less of that rigging two sails per session something that im guilty of a lot

Hopefully this makes windsurfing better with less gear and with Peter Bijl invovled it shoud be great.