Easier to do on paper or screen . Jim Young once told me the origin of his highly successful Y88 was a 1/2 tonner called Mama Cass (I think) he...
inputting figures into the spread sheet using an emphirical treatment I have the following observations; increasing chord by 25% gives only a 10%...
Skyak, thank you for your reply. 1)the foil would indeed be close to Bmax, the hull is fairly slab sided with a soft chine at waterline 2) the...
thanks for the reply, yet more thought needed.
they are of the same order as keel or rudder in relation to the surface yet do we not count the endplate effect when considering keel and rudder...
a question you may be able to answer for me. The aspect ratio...should this be doubled as the effective ratio according to plane theory the end...
I found the attached spreadsheet on the net. As it was on the net I assume there are no intellectual property issues. It seems to be a spread...
last time I did it I think I used epoxy thinners.
So if we are talking 1 degree, ie RM1 KNsin1*m= RM1 is a rough guide where m = displacement so m=4200kg KNsin1=.035 RM1=147KgM then if we...
Any users? It could be my concept or my maths. The Cross curves function in calculations gives KNsin values Does not KNsin = GZ therefore...
thank you for that I will do my best to digest.
Acetone, scotchbrite then 80 grit and a sander. Tip rub vaseline into yourself and don't take a hot shower after but a hot bath. if you are using...
Thank you for your suggestion. I am very much at the exploratory stage..what if? How much? I am not trying to fly. Just reduce the lead(Pb) needed...
thanks for your reply and I have looked at multiple threads concerning DSS and most are full of news and pictures but not numbers. The closest...
Does any one have some numbers regarding righting moment and performance increase, plus optimum foil shape and placement? I find the concept...
Have you done much sailing?
The 1104 was a great boat, relatively easy to sail, with a modified rudder, simple rigs good sea boats you could cruise with the family. under the...
Easy mistake to make, Farr 1104 and 920 have same half model I was told. I built an 1104. Both brilliant designs before IOR changed the rule to...
what do you define as a small boat LOA?
stability Ok formula which have the I have worked with. My question is: taking the measurements from the lowest point of the hull as base line...
