How about the bar that comes out from the keel to the bottom of the rudder, is anybody fitting them ? This could be the place to put "wings" or plates to stop the ploughing. I get the feeling some folk have forgotten the concept of a tug. If you want to go fast dont build a flat-sided pudding bowl. Or build a top that looks like the sail/conning tower of an Akula and charge full speed till it acts like a submarine on purpose
Hey good start killit, keep us informed when you next raid the parts-bin. BTW , I`d reduce the mass of the rear midship cross-brace if it isnt too late. Knock that one out and replace it with full depth ply same as hull-side to make a water-tight open top box. Keep weight down low. Are you going to support the prop shaft ?
Hiya, I'm afraid removing the cross brace is a no no, simply because its rather well glued and pinned into position
so any demolition will do damage to the rest of it. What I'll do is glue a piece of balsa or ply to it to make the thing go down to the bottom of the hull. I guess it didn't come out in the photos too well. If you look at the very end of the stern tube there is a bit of balsa that comes up from the bottom cross brace to engage in a notch with the stern tube. This has rendered the whole thing pretty solid. I realised I would need it when I first applied power to the motor (an old Monoperm by the way it runs very well), there was an awful lot of vibration from the tube, so I did the fix and its dead quiet now. Thanks for the info, given me things to think about (like keeping it dry!)
I considered putting a skeg in, but decided that no-one would see the rudder when its in the water!