... Well, there's titanium. But I recently read a brochure by an aluminium stockist, saying that some aluminium alloys do have a fatigue limit. I looked on...
According to Aluminum Boats by Kaiser Aluminum; after 500,000,000 reversed cycles alloy 5083-H321, & 5086-H32 -H16 have a tensile strength of 23,000 psi while...
Hello proa people. It's pretty hard to explain why i'm on this list. Sailing hasn't been that interesting for me. Ships were beautiful and had a scent of tar, ...
5078
Roy Mills
rsirfj@...
Oct 3, 2002 3:55 pm
... Do I understand that instead of the usual glass/foam/glass sandwich he uses Dacron/foam/Dacron? Would you mind explaining what are the characteristics...
... reversed cycles alloy 5083-H321, & 5086-H32 -H16 have a tensile strength of 23,000 psi while Ship steel ASTM A131 is 35,000 and fiberglass is only 7,000. ...
5080
Brian Southwood
briansou@...
Oct 3, 2002 6:32 pm
Welcome to the list, you seem to be as mad as the rest of us. You should fit in well. Cheers. Peter. ... From: eo_project To: proa_file@yahoogroups.com Sent:...
My problem is that getting enough strength in an aluminum shaft made the rudder too fat causing excess drag. I guess that the stainless-foam-glass option is...
Hello and welcome. You seem to be all full of enthusiasm about building a proa. Also seem decided on building technique. You seem to be far from choosing a...
... Thank you, but if you would like to see some really excellent writing instead of just some wobbling around a dictionary I suggest a visit at: ...
5084
Roy Mills
rsirfj@...
Oct 3, 2002 11:20 pm
... I can see that a foam core that thick will indeed absorb a lot of punishment without passing much stress on to the inner skin, and that flexibility of the...
Hello. ... Thanks. I suspect my enthusiasm will shrink along the way, but for now there's hope. :) ... To tell you the truth I'm not completely sure it will be...
... There's a new lesson to be taught every day. Thanks for pointing it out to me. Using a thinner foam core might allow for the strip-foaming technique that...
5087
garyd@...
Oct 4, 2002 7:17 pm
I would recommend reading Tim Anderson's adventures with his fabric covered proa. http://www.mit.edu/people/robot/yucatan/index.html Gary...
... Lots of weird things happen with single tests. Back in the 50s when people were trying to convince game departments that bow/arrows were effective game...
proaconstrictor:
> Lots of weird things happen with single tests. Back in the 50s when > people were trying to convince game departments that bow/arrows were...
... When I built a model of the Mi6, I used a scale of 1:5. I wouldn't go any smaller than that if you want to sail the model. If you just want to test the...
... To make an educated guess based on other people's reports, go to http://www.backpackgeartest.org/ They have tests of the Lawson and the Crazy Creek...
Well G'day, are you all going to make it to Sydney for AMOC (Aus Multis offshore champs) in October? How will we keep up with what is going on when that date...
G'day, They cancelled AMOC, then reinstated it (apparently, I have not heard any results) 3 weeks earlier. This made finishing too much of a rush, plus we had...
If I slept aboard a proa, in a hammock, it would give a whole new meaning to forestay tension. In the interest of world peace. I think I had better stick...
Two reponses digested into one... ... Good tests. The sheer number of testers is a advantage. They even write how tall and heavy the testers are, which makes...
Hello everybody, I beg your pardon for a very long silence, but it is not easy to move the home and to change manu things in the computer! now we are ready...
... I think the most basic model, but I will have to check to be sure. It was the one they were selling at a discount because of "colour overrrun" :-) I intend...
The masts currently on my boat are laminated solid spruce originally built for a sharpie. The diameter is about 10 cm, and they are 5.5 m long. They look a...
More newbie questions... Weedy? Really? The mast i intend to build for Eo is a 10 cm birdsmouth that tapers to the top 7.5 cm diameter. The length hasn't been ...
Hi friends, on the chance I get a book of 1980 from a friend with a lot of (for myself) total new pictures of old proas/plans/models. I used this occasion to...
Hello, I have been very interrested by your new collection, may i give you some information to become richer in that chapter. Twoo french books: At first...
... My masts are unstayed, so they need to take all the heeling moment. The boat is 3 m wide, so if I sail with a crew then the maximum righting moment is...
