So I'm new to this group. I thought that since the Harryproa site is sortof new that this would be a startup chat group, and I find that you guys have been at it quite a while!

On starting with a existing forum with history and large following it's usually the best move to read a lot before surfacing and making noise, and I have done that I think... If any of my questions or comments are delt with elswhere in discussions please point me in that direction.

I am primarily interested in the 40F WIP design because I think that a trailerable blue water sailor is a really cool concept!. The more I read about the great sailing capabilities of harryproa designs the more I get excited about building one!

Great sailing, quick build, trailer-ability are my priorities.

The following scenario is what I'm envisioning... The bride and I come back from a weekend cruise, and in protected (calm) waters near a boat ramp and our tow vehicle/trailer we anchor, button up the saloon roof, take down the sails, tether the tender off the windward hull, fold the beams from the 20' beam down to whatever the 40F folds to 10-12', tie the halyards to the ends of the booms and point em over the windward hull where they serve as davits to hoist the tender into the air above the windward hull using the sail winches, stow the tender on top of the windward hull/saloon to mating tie down points, I plan on having electric motor propulsion under bridge deck with which I'll motor to the ramp and start onto the trailer, after winching onto the trailer, we'll tow the boat to a free space in the parking lot where we'll un-step and stow the masts, the hulls now fully supported by cradles on the trailer we'll disconnect the folded beams, raise the windward hull by the height necessary to move the 2 cradles/hulls toward each other resulting in a legal towing width of no wider than 8.5'.

I have designed in my mind a mast stepping device that makes use of 2 hydraulic bottle jacks to support the masts while raising em out of their bearings in the hulls, and perform a controlled lower/raise (step) of the masts onto support brackets built into the trailer. Once lowered the masts could be disconnected from the device and easily manhandled into a stowed configuration.

From the mock-ups posted I'm have a hard time understanding the rudder design. Seems to me that rudders that serve as dagger boards will have a sizable hydraulic load on them to achieve their purpose, so I would expect some substantial brackets to handle that load. I'm thinking some sort of detent in the down configuration that would serve as grounding breakaway, which of course must work inline with the hulls in either direction. Remote raising ability for the rudders would be highly desirable.

Question, on a shunt why is it necessary to 180 the rudders?

For my part I'll want a wheel to point both rudders from a single device. I envision connecting from the wheel to the rudders with a cable in cable push rod affair that is flexible enough to work with the beam folding, and quick-detachable when the beam is disconnected for trailering...


/Robin

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