RE: trimaran plans
Plan No.62 is sent!
Another fellow from Brighton/Australia and a (full size) trimaran sailor from Key West/Forida joined in!
@ Bertauy
A beautiful slim trimaran you have built, but I believe you will have troubles with lack of volume overall - and especially in the bows of all three hulls. Also the bow heigth will probably be to little.
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The "Nightmare Mk.VII" has floats with 7500cm3 volume each and a mainhull designed for 3.00 kgs ready-to-sail -
makes it at least 250% of the achieveable ready-to-sail-weight.
If you are able to build it with only 2.5kgs, the floats have 300% volume, which is even better.
The bows should be at least 120 mm high on each hull.
The mast needs to be at 500 mm from the stern - and the overall center-of-weight at 380-400 mm from the stern.
In other words - at or around 1/3 of the boatlenght of 1220 mm - due to the scaling factor (in relation to full size trimarans) and because of the fact, that you don´t have a moveable ballast = crew.
Therefore also the rc-gear (batteries, sailwinch,etc. - need to be placed as far aftward as possible!)
The exact scaling factor of this Mini40 trimaran is 1/5 - in relation to a 20ft. (6.10 m) trimaran with two crewmembers.
The sailarea of 0.9 m2 is in relation to 22.5 m2 for the "real" trimaran.
The 20 ft. trimaran could possibly be built in fibreglass/epoxy/sandwich with 200 kgs. + 175 kgs for two adult persons.
Please keep this in mind if you want to design a trimaran yourself - or just building to the plans you can get here for free.
Most of the not-so-experienced modelbuilders will not be able to build the boat below 3.00kgs.
2.5kgs is a very good (low) result.