About 25 cm of extra length was added to the tail over two modifications, giving more lift for takeoff without excessive pumping.

The longer tail and more forward foil create a downwind-style feel with improved glide and stability similar to a more conventional big board, while still retaining a small area nose that feels great, thanks to reduced swing weight and less buffeting when flying upwind.
At 90kgs I can now uphaul it without much anxiety

At 191 x 65 cm the board feels efficient and balanced, and the added tail area is essentially free - once up on foil, it isn't noticeable.

Testament to Mark Oz's board building skills that this is his first windfoil custom build - used for hundreds of sessions by Mr Smooth and me over 3 years yet still structurally perfect to be worth modifying

It might be good also as a wing ding board ?

Is that original custom for 2Keen going thru more modifications?

Yes it is. The bottom pic doesn't make it look like much was added but it is quite a lot. That rear most strap hole was about 100mm from tail

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azymuth said..
About 25 cm of extra length was added to the tail over two modifications, giving more lift for takeoff without excessive pumping.

The longer tail and more forward foil create a downwind-style feel with improved glide and stability similar to a more conventional big board, while still retaining a small area nose that feels great, thanks to reduced swing weight and less buffeting when flying upwind.
At 90kgs I can now uphaul it without much anxiety

At 191 x 65 cm the board feels efficient and balanced, and the added tail area is essentially free - once up on foil, it isn't noticeable.

Testament to Mark Oz's board building skills that this is his first windfoil custom build - used for hundreds of sessions by Mr Smooth and me over 3 years yet still structurally perfect to be worth modifying

That boards getting closer to looking like my Severne Alien!!

I love it! I had similar results with similar modifications. Gotta love it when a mod improves performance AND is easier to use!
There is another benefit that's the SUP downwinders talk about but windfoilers rarely do. When you put weight and volume behind the front wing it helps move the center of gravity of the board closer to the front wing. This helps balance pitch. When the CG of the board is over the front wing it is one less thing that you and the stab have to compensate for.

It is cool seeing Simon's current set up next to your adaption of his old board, the same but different! It would be interesting for him to ride it and tell us what he notices about the performance differences. Pick those two boards up by the front wing like the downwinders do, I bet your new mod hangs level and Simons little ripper hangs nose down.

JJ what was your final take on that short wing board you tested? Did that motivate you to try something longer?

I have been reaching for funny names for your board because of all the edits it's gotten. The best I have so far is TRANSFORMER I can see it in orange letters like the original offering.

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azymuth said..

two ways to rockit

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Bender said..

azymuth said..
About 25 cm of extra length was added to the tail over two modifications, giving more lift for takeoff without excessive pumping.

The longer tail and more forward foil create a downwind-style feel with improved glide and stability similar to a more conventional big board, while still retaining a small area nose that feels great, thanks to reduced swing weight and less buffeting when flying upwind.
At 90kgs I can now uphaul it without much anxiety

At 191 x 65 cm the board feels efficient and balanced, and the added tail area is essentially free - once up on foil, it isn't noticeable.

Testament to Mark Oz's board building skills that this is his first windfoil custom build - used for hundreds of sessions by Mr Smooth and me over 3 years yet still structurally perfect to be worth modifying

That boards getting closer to looking like my Severne Alien!!

Similar outline but his foil tracks are about a foot further forward.

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utcminusfour said..
I love it! I had similar results with similar modifications. Gotta love it when a mod improves performance AND is easier to use!
There is another benefit that's the SUP downwinders talk about but windfoilers rarely do. When you put weight and volume behind the front wing it helps move the center of gravity of the board closer to the front wing. This helps balance pitch. When the CG of the board is over the front wing it is one less thing that you and the stab have to compensate for.

It is cool seeing Simon's current set up next to your adaption of his old board, the same but different! It would be interesting for him to ride it and tell us what he notices about the performance differences. Pick those two boards up by the front wing like the downwinders do, I bet your new mod hangs level and Simons little ripper hangs nose down.

JJ what was your final take on that short wing board you tested? Did that motivate you to try something longer?

I have been reaching for funny names for your board because of all the edits it's gotten. The best I have so far is TRANSFORMER I can see it in orange letters like the original offering.

Thanks

Interesting idea about my adding volume/weight to the tail moving the COG back and balancing pitch.
I can't say I noticed any difference in pitch stability but it did feel sweet

I still like the JP short board - its light at 7kgs, feels great in the air but at my 90kgs hard to get going especially with smaller foils, and hit or miss to uphaul which is not ideal for fluky winter winds. A board for strong summer sea breezes or I might sell it as an allrounder to somebody <75kgs.

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azymuth said..

Nice !!