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  #11  
Old 03-09-2007
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sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
I can imagine a racing monohull made with titanium, carbon fiber, kevlar, and using osmium for the ballast.

Neat stuff... I used to use it when working on custom bicycle frames... expensive though.
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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  #12  
Old 03-09-2007
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Carefull, you'll have Giu foaming at the mouth!
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  #13  
Old 03-09-2007
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He does that anyways...
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Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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  #14  
Old 03-09-2007
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I have a 29' aluminum boat, have for four years. There are no overly laborsom maintenance issues with it. You need to have a working galvonic isolator with a guage to frequently monitor stray current conditions. The same stray currents that will eat the prop, bearings and struts on any fiberglass boat.

One huge benefit of a metal boat is the ability of having a monocoque structure (no hull to deck joint), for strength it can't be beaten. Downsides are bottom paints are regulated now and need a certified technition to apply it. The lightness of aluminum (in my experience) makes for an unpleasant ride in a less than protected anchorage. In a sailboat this would be compensated with ballast. The expense to build an aluminum boat is very high compared to fiberglass.
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  #15  
Old 03-09-2007
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Quote:
Originally Posted by sailingdog
I can imagine a racing monohull made with titanium, carbon fiber, kevlar, and using osmium for the ballast.

Neat stuff... I used to use it when working on custom bicycle frames... expensive though.

Got Carbon fiber, got kevlar and Epoxy...

Now..where would you use the titanium and why??? CF is way better...

osmium for ballast, is it heavier than lead???
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  #16  
Old 03-09-2007
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Quote:
Originally Posted by Giulietta
Got Carbon fiber, got kevlar and Epoxy...

Now..where would you use the titanium and why??? CF is way better...

osmium for ballast, is it heavier than lead???
Do you use steel anywhere on your boat?? Titanium is stronger, lighter, and more corrosion resistant....

Osmium is no heavier, pound for pound, than lead... a pound of each, weighs just a pound... however, it is much denser than lead, and a pound of osmium takes up much less space....

IIRC, lead floats on mercury, osmium does not.

edit: a cubic foot of Osmium would weigh about 1430 pounds, a cubic foot of lead weighs 712 lbs.
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Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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Last edited by sailingdog; 03-09-2007 at 09:33 PM.
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  #17  
Old 03-09-2007
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Quote:
Originally Posted by sailingdog
Do you use steel anywhere on your boat?? Titanium is stronger, lighter, and more corrosion resistant....

Osmium is no heavier, pound for pound, than lead... a pound of each, weighs just a pound... however, it is much denser than lead, and a pound of osmium takes up much less space....

IIRC, lead floats on mercury, osmium does not.
SD, No steel other than in the 2 horizontal keel studs, and the lid plate that has 3 vertical bolts. Also (but because our regulations demand so) the life line things (stanchions??) and the thingies in the front and back so you don't fall in the water (what are they called??), Also in the external chain plate and bow Stay plate...

Ruuder is CF and alu, everywhere else, Kevlar, CF, GF and epoxy. As you know its Cored with Divycell.

Ok...if it's less denser, osmium is good as one can reduce the size of the torpedo
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  #18  
Old 03-09-2007
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Giu-

The keel studs, lid plate bolts, stanchions, bow pulpit and cockpit pushpit rails and chainplates could all be titanium...and be lighter and stronger than what you've got now...and have less corrosion problems. Same for the aluminum that you're using... titanium weighs about as much as light plastics do...but is ungodly strong...

Osmium is more dense, like your skull... not less dense than lead.
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Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
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  #19  
Old 03-09-2007
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Quote:
Originally Posted by sailingdog
Giu-

The keel studs, lid plate bolts, stanchions, bow pulpit and cockpit pushpit rails and chainplates could all be titanium...and be lighter and stronger than what you've got now...and have less corrosion problems. Same for the aluminum that you're using... titanium weighs about as much as light plastics do...but is ungodly strong...

Osmium is more dense, like your skull... not less dense than lead.
Of course I meant denser, not less dense..duhhh sorry you know I made a mistake...I mention the reduction in torpedo size.

The pulpit, stanchions and pushpit have to be steel, by EU regulations...I wanted them in Aluminium, but no way José!! they inspected that...even the TP52's are steel...unfortunately.

If I made you a sketch of my keel and the size of the studs would you be able to tell me the aprox cost of making those in titanium??
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  #20  
Old 03-09-2007
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check out ferro-lite took 3 weeks to make a 8 inch hole 24 inches.
you can see video at www.fer-a-lite.com .this site is linked to a company that I've done work for . I have worked with this material and it is very stong . the repair being done is the only hole in the hull after 8 hours of the bow droping 7 to 14 feet onto a concrete seawall during hurricain francis.

Last edited by nicholaspalmer; 03-10-2007 at 11:27 PM.
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