Foiling Nacra F20-the Revolution Continues!

Wonderful!!

Finally, a real pitch on one of these foiling beasts! Good to see. Can't wait to watch 15 of these line up for a windward pin in 5' chop. It's going to be the best spectator fun around. Not that I'm into carnage or anything...

 

Nacra F20 foiler

Nacra boats being used by British Challenge for AC 35. Here is a 20 foiler being singlehanded on foils:

 

A NACRA F20C FCS being assembled in LA, California for Pete Melvin and two others in Miami, Florida to be used as demo boats. Should be some video pretty soon! And, maybe a chance to catch a ride on one of these foiling machines!

 

Nacra F20 foiler

So very cool-from catsailingnews.com :
https://www.youtube.com/watch?v=7wC2vvrOu1k#t=23

 

Old Nacra Foiling

So my goal this winter was to modify my Nacra 5.5 to a foiling cat. I would like to get this done in the next 4 weeks. There is so much knowledge at this site it shouldn't be a hard task. I personally feel that the new foiling cats foil too high out of the water. It would be nice to skim the water on a foil and still feel like your connected.

Here is my plan so far:
Make new dagger boards to foil and keep the same profile to utilize exiting profile in hull.

Modify new deck to allow adjustment of foil in a forward and aft position.

Make new rudders with wings

Make new castings for rudders. Up lifting or swing?

Any input would be great. Thanks

 

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David, welcome to the forum. Sounds like a fun project! You shouldn't design too much based on "feelings".
The flight altitude of the current cats is not accidental. I would design the boat(which is what you're doing when you add foils) to have an adjustable flight altitude.
Are you going to use UptiP foils or wand based foils? If UptiP you have to be able to retract the windward foil. and ,again, if uptip the foil needs to be able to pivot about a point near the bottom of the trunk so the AOI (angle of incidence)can be adjusted.
Rudders should probably lift vertically. And the AOI of your rudder hydrofoil should be adjustable but not necessarily while underway.
You might want to start a new thread about your boat since this thread is mostly about the Nacra 20' foiler. That way more people would be able to follow your progress and realize that you are doing a different boat than the FCS.
Good Luck!

 

If you haven't seen the owners manual for the 20 FCS it recommends wearing a helmet and chest protector. Also, sailing in under 10knots the first ten times sailing due to a learning curve. Apparently there is some difference between driving when the boat is in the water and when it is flying that takes a little time to get adjusted. Doesn't look like it took to long for the guy's in Argentina.
In a very short time I really believe the ARG. guy's will sail side by side the FP and NACRA, I don't think they are even close to comparable even though they look similar. I think the NACRA is way faster than the FP. Mostly because of the size and larger "wheel" base. If you don't mind the auto analogy.

 

Nacra F20 foiler

I don't know but I think the Phantom will wind up the faster of the two...

 

Foiling Nacra

This is a professionally done video About the Nacra from Argentina presented on catsailingnews.com:
https://www.youtube.com/watch?v=4jQaW9luh-8&t=23

 

I've heard that John Casey will be the contact for the NACRA 20FCS demo boat in Miami and that it will cost you $500 for a day of sailing. the $500 can go towards the purchase of a new boat.
More to follow. NACRA-NA is going thru a few changes at this time.

 

F20 Foiler

Eurocat 2015, Day 1,from www.catsailingnews.com
https://vimeo.com/126638601

 

Nacra 20 Foiler

Catsailingnews says that the Nacra 20 foiler has the edge in lower midrange to light winds over the 18' Flying Phantom: http://www.catsailingnews.com/2015/05/nacra-f20fcs-power-in-low-midrange.html#more

 

F20 foiler

From catsailingnews: https://vimeo.com/140016111

 

Nacra Foiler

Nacra foiler with Pete Melvin sailing: https://www.youtube.com/watch?t=20&v=eKDjEfzGYIg

 

Nacra 20 Fcs

From The Foiling Week- https://www.youtube.com/watch?v=e7AnvhdzIWk