If you make the wheel base 1.8m and the width 1.5m it should fit the 5.6 rope rule. The Fed 5 frame would be ideal. The front wheel would be just in front of the mast. Dont worry about weight. You need heaps to hold these tiny boats down. Build it heavy. They probably wont start the race till there is a steady 10kts.
Blake it looks like most of the promoish minis have the mast about 50'' plus ahead of the rear axle center line. Some appear to have a good amount of mast rake as well. It's going to interesting to see how they do rounding the leeward mark with a decent wind at Smith Creek.
Thanks, that helps a lot. I did a lot of measuring today. Of course, none of the corresponding Ludic tubes are even close to the fed frame tubes. Stretching the Ludic a foot looks doable, but so does just building a simple T-shaped rear section to mate up with the Ludic steering and mast base. I wonder how the promo folks are avoiding the weight being too far back since shortening the rear axles moves the rear wheels forward and the weight distribution was already a problem.
I think they use a fair bit of ballast in the front when the wind is up. Mini AUs230 with the mast post forward can attack the downwind mark fully sheeted with no problem
hey Vic, I put my promo mini on the scales and I have about 8kg on the front wheel. i think i read somewhere front wheel weights Sand 11kg and clay 7kg.
Progress. Did a lot of welding this morning, mostly the odd bits to make streering work without making it impossible to go back to a mostly Ludic setup and parts to male my trailer two level. I'll take photos of those parts and the whole thing assembled tomorrow. Then I have a bunch of epoxy and glass work to put the tub back together and close up all the extra holes. I wish I was a better welder; just don't do it often enough...seem to be able to do strong ugly welds, could be worse.
