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A proa has been reported sailing in St Georges basin just South of Nowra, NSW. About 30' or so, black hull with a red stripe. Any clues as to its identity? ...
I remember seeing a Hartley designed proa a few years back that fitted that description. If it is the same one it has done a circumnavigation or so I was told....
jjtctaylor wrote lightning is a time changing event, producing a moving electro-magnetic wave, linearly polarized. Which is good when it's running down the...
You are correct the concept. The wave front of the electro-magnetic wave from lightning moves outward like a doughnut. Wave motion and what happens inside...
G'day, Not yet, he is still thinking about the best way to rig it, and how to build an unstayed mast from his alloy one. Should start pretty soon, he intends ...
Excuse the dog with a bone but I want to make sure I get this right. My understanding so far. With metal shrouds there is a possibility of a side flash from...
I would have thought it easier to sell the old one and start from scratch. building extensions to fit exactly would take almost as much time as building a mast...
Thanks for the info because I was at my knowledge limit and it is easy to get confused after that. Just one more little thing You mentioned radio waves. I know...
Me too, but the old one is so full of holes that no one would buy it. I have warned him of all the potential problems, and how to get round the, I don't think...
Based upon many reports the ground plate under the hull doesn't blow itself a hole from the lightning rod, although some reports of sintered bronze have had...
Thanks JT, I'll remember your advice when setting up any boats in the future. I wouldn't have had a clue about the necessary surface area for the rod and...
The graphitizing of carbon fiber is not the same as a graphite and carbon mix. There is some other process going on to extrude this themoplastic-carbon and...
-In reference to the 3/8 pipe lightning rod, would a loose compression fitting over a flanged end provide enough flexibility to allow the 330 degree twist if...
Robert, No it doesn't have to be fancy, but we have a couple of realities to address....... Your suggestion can work yet we have to "thimk" of realities....
It is possible to TIG weld copper pipe to a copper plate, let the pipe go through the hull from below, seal the hole with flexible goop and put a loose...
JT, Would a flat strip of thin copper or aluminium bonded to the outside surface of the mast be good? (better or worse than pipe inside?) Cheers, Peter. ... ...
I have a 2 "Shark" cats, 20ft, ply decks, fold down the centerline, we never sail them because of how difficult they are to unfold and setup. We even...
Please do not bond a conductor to the carbon mast.... especially if connected to your lighning rod. The lightning current will easily find its way into the...
You can do that ! Might be more work if you did have some damage to the ground plate and it needed to be replaced but your idea certainly can work ! Don't...
Hello Everyone, The latest update posted at www.harryproa.com includes; a.. Another Harry Proa in France ... click here b.. Building Update for the Australian...
I was thinking of a wooden mast with glass fibre sheathing, so it shouldn't have that problem. Sorry, I should have mentioned. Cheers, Peter ... From:...
Oops, apologies...these will work... :) Another Harry Proa in France http://www.harryproa.com/FMugnier/FMugnier_1.htm Building Update for the Australian...
Michele, tell us more about the "... vacuumed foam/glass using our cheap female moulding process ..." listed on your site: Plan set #14 & #15 - Custom design...
G'day, ... The mould takes advantage of modern release films and the fact that the boat will be painted. Consequently, the mould does not need a glossy...
Rocker or no rocker on a eql 16' narrow flat bottom windward hull. I was thinking no rocker but then thought because the the short length the motion in a sea...
I would think on the contrary. A long skinny hull is designed to slice through rather than ride over, thus avoiding a lot of wave propagation and hobby...
Under my mother's house at the coast I have a 6.5m aluminium mast and a 3.5m mast section, unfortunately not the same section. The are both 13cm from front to...
Robert how are you, are you working on your proa yet? My windward hull isn't really skinny with a 10/1 length to beam. I went with an 18''chine to 24''sheer to...
