Hmm! Just to make sure that there's no confusion - the surface area is 13,4 sq. m not 134. That works out to 134.000 sq. cm. I forgot that you use...
I wasn't too clear about the "height of bow from waterline" measurement. What I meant was the height of the bow above the waterline. In any case I...
It seems a little high. Post the following dimensions and with the numbers you've already given us I'll calculate the surface area of your hull:...
From the Tornado class rules: D.3.1.a The hull shells shall be made only of one or more of the following materials: wood, glass fibre, foam...
The following is paraphrased from Skene's Elements of Yacht Design and is a method that has worked for me: 1.Divide the vertical distance...
This is a larger image of Bill Tripp's lifting keel design featured in the Turner Yachts link in an earlier post. You can click on the image to...
My primary concern with using a cable or line to lift the keel is that one does not have positive control over the keel at all times. Once you...
Another observation: The top portion of the keel which always stays in the trunk need not be foil-shaped (in your drawing it is unclear whether...
I too would be interested in other's comments, especially from the designers and engineers that frequent this forum, but since no one else has...
To find the waterline, since the boat is already built, take it to the water on a calm day. Stick a couple of your friends in it, equal to the...
Go to Backyard Boat Builder Standards for USCG guidelines for calculating carrying capacity of home built boats.
The following is how it's described in Skene's Elements of Yacht Design by Francis S. Kinney: Find the center of lateral plane (CLP) by cutting...
Thanks for answering guys. Sometimes in my zeal to be brief with my comments I'm a little too brief.
Even if you let everything out and remove the fitting you'll still have propane vapour at atmospheric pressure in there. That's still enough...
Yikes! First a word about safety. You probably already know this but for those who don't and may be tempted to try to cut into an old propane tank...
Never mind the deckhouse, what about the location of the radar antenna? It sent shivers down my spine. There are some excellent...
Ted: Not a problem, Excel is overkill for this situation, a $5 calculator can do it. If your calculator doesn't have Pi use 3.14159. If it...
Time for a little math! Using the original all-up weight of 500lbs in fresh water (62.4lbs/cu.ft.) your boat would displace 500/62.4=8.01cu.ft....
I get 10.2' for the 12" tube. The others, rounded off, seem correct.
An old-timer once explained it to me this way: Imagine a shoe box without its lid on - you can twist it every which way, but if you glue or tape...
