Fairey Huntsman 31 R/C boat

grabcad

UPDATE - April, the 19thYou can see vids of the Huntsman running here : https://www.facebook.com/ftm.ftmaventure59/UPDATE - December, the 16thMy model is now almost finished and the first trials showed a very capable and speed boat! So, a few more if you want to try the adventure...First, and very important : the drive.There's a steel flexible coupling, 2mm diameter. It turns into a 4mm outside teflon pipe, with silicone grease to limit the water infiltration. As it's VERY flexible, I add a second plain bearing (chaise 2) behind the 28mm propeller and glued under the hull, so the vibrations are limited. A piece of brass tube (outside diameter 3mm) is inserted in the end fitting of the teflon pipe, and in chaise 2. The coupling between the engine and the steel flexible is made by two coaxial pieces of brass tube (ext. 3mm in ext. 4mm) tightened by two steel clips (see inside pictures).Important : the flexible acts like a pump in its sheat, so try to find a propeller that turns in the good way, so no water will enter in the hull by this way.Inside the boat, two pieces of wood are glued in order to support the 3S 4500mah lipo. Be careful that it isn't too high, as the cockpit is low at this place!A waterproof box, in front of the engine, contains the receiver and the ESC (the one I chose for his reverse is these : https://www.ebay.com/itm/S-35A-Brushless-ESC-Electric-Speed-Control-5V-2A-BEC-for-Racing-Car-Model-RC723/372465235266?epid=12016014889&hash=item56b8a87542:g:3NwAAOSwArFbvVn8:rk:1:pf:0 )The trial I made indicates a 1A consumption at about 3 knots, but it can reach more than 15 knots with a max of 11A - 120W.To give a better appearance, I add a few wood pieces, and made a cramp and a windglass. Please, be better painters than me, as it's a disaster, but at two or three meters it's almost nice...Last, the name on the rear is very simply printed with the picture conversion of Cura. Type your own name on open office, make a screen capture of it, drag and drop in Cura, and that's done...Oh, and I forgot : the balcony is made of steel wire, soldered with tin. I thought about print it too, but I'm afraid it would have been too fragile.Initial informations:Inspired by the famous Marc Spital's version, I tried to make a printable version of this superb design boat. That's done, but I'm not too proud of the result, as I made her as a volume - can't have a watertight stl as a surface! So, many approximations and awful hacks, but this is usable. I print the pieces on my CR 10 to make a 550mm long version, motorized by a 2212 type brushless. About 160h... pictures as soon as it will be all achieved! I precise that the 'volan.stl' isn't of my drawings, I'd have liked to put a link to the original file, but can't find it back... so, if the conceptor passes here...