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May I suggest that instead of football we use the term siege?

I am thinking of it as a longer version of the under bridge deck rudder support that is in the 480. But Bernd you refer to it as a foot well which to me suggests that it is open to the upper side of

Hi mIk You have the sketch I suppose. You know w by now that this is only the final part of the footwell. Now, rudder housing, as Brian mentioned it is the same design as for the DUO 480 C The upper

Rudder support for central rudder? Similar to the short triangle part under the rear of the 480 bridge deck , except of the 520 it runs to the front of the bridge deck/ cabin. So it is not some sort

Another update... Still cooking right along, hoping for an April launch and road/water trip. -Jim

Qiuseppe: One Builds it oval as wind resistance has a bigger impact on course and speed the more forward the wind is. i.e - when you're beating to windward the higher the wind resistance the less you

Hello Mike, Well I can’t figure that out. It does not look like anything I did on my Eco 6, but with only that little segment of drawing it is a bit hard to figure out just where this sits in

Hi, reminder to old and new prospective builders. Domenico's (and mine) KD122 one partial build is still available near Venice airport. Asking price Euro 23k, hulls completed, most plywood cut to

Just a question: why build an oval section instead of circular section, in general the wind will come from 30°-135° degrees?

This section of the 520 has me talking to myself. Other boats such as the Eco 6 seem to do this part a little differently Thanks for your help. (some progress being made. Mike.

Yes Bernd I have always thought it since the problem is the lateral thrust (from bow to stern) while the internal part is supported by the internal crosspieces and 4mm steel cables. The oval shape is

Domenico Can you make a sketch to understand things better? The oval shape is the way to go. Byer

Hi, Amazing progress,? very impressive. Happy holidays

Hi Bernd as I told you I started building a section of the A-frame mast. As for some time and in my head I decided to do it in an oval shape, to abandon the idea of PVC pipes (too much fiberglass and

Hi Domenico Good progress, have I to tell you that? ;-)) you know by yourself. Have a nice holiday. Ciao

Link foto /g/K-designs-Multihull-Sailboats/album?p=Taken%2C%2C%2C20%2C1%2C40%2C0&jump=1&id=269251

Hi Bernd I have posted more photos on the construction of the KD122, works which include carbon fiber, fiberglass and antivortex fin installation. On 10 January 2022 we start with the hull finishing

Hello for me if you have to use these two resins (polyester and vinylester) leave the wood alone. Bye

I am with Bernd on this one. If you are building in plywood then use epoxy. Using anything else will be a source of regret later!. Richard

Thank you to all that commented. At the end of the day the aim is to get a solid structured boat that will last and also ensure safety under extreme weather conditions. Many have suggested Vinylester