Its called XFLR5, and its free. Its basically XFoil with some extra's added on. you can get it at http://xflr5.sourceforge.net/xflr5.htm RG
Good one Guillermo...just add some safety lines around the legs and your offshore legal <grin> Jim... even though they use lower horsepower, most...
Doug, this is just a 10 min quickie to show you how it changes the performance...this was set up simply with no attempt to show real performance...
Unlike what you might expect, these boats employ almost every idea in current offshore powerboat racing you have seen and then some, most are...
not sure you'll find it as the page is disabled right now....boat I did is for dave with the tohatsu....url for pics is:...
oops....forgot....its easier to use a wing forward and less drag than putting something in the water RG
this is our 3rd version and already a bit past 30 mph on 8 hp....in NZ the class is called Max 8 and quite popular. This version is building now,...
A couple more screen caps from the GPS trace from today, set to 101m averages RG
forgot to mention the outer dashed and shaded area represent max speeds and vmg's and the inner darker shaded area and dashed lines represent...
Some LR2 GPS data Has been a while coming, but we finally got some GPS data off the boat, at times the wind was 10-12 knots and very shifty, but...
Not that we design according to such ratios but it peeked my interest to see how our design compared... on total volume ours is 36.1% below DWL,...
Bob, I you go back thru the thread to the first pic's of the boat, DWL is where the hulls were joined...which is the extreme nose of the bow with...
Triman....personally I don't see that canting the boards provides any benefit and probably increases the hull pitch rate a bit when you look at...
Hi Marcus while the pic's of the LR2 might make it seem like the rear beam is low, it is infact a little higher than the Flyer MkI and in the...
Bob, the boats (either version) will only be available in the US thru John & Ian Lindahl as finished boats, you can contact them at...
Bob, we have now sailed the boat with up to 120 kg and using a Mk1 butt as a speedo, appears to go just fine, but its definitely sliding sideways...
Just playing around with variations on Marks last foil in XFLR5, while its possible to get more CL or L/D its damn hard, if not impossible to get...
Thanks Steve, nice looking boat :) RG
Tom, as I have never seen the DK-17, is there any chance you could post a pic here of it ? would be nice to see what we are talking about. RG
Bob, The boat is designed around a 75kg crew and at a stretch might accommodate 100kg, but thats just a guess. To my knowledge no one who is that...
