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  #31  
Old 05-25-2010, 01:46 PM
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DrCraze DrCraze is offline
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Quote:
Originally Posted by Joe Petrich View Post
"The entire aluminum superstructure burned/melted down to the steel deck." My bad. Al burns at 6920 F. If you have a fire that hot on board your boat I guess you have other things to worry about.
Like whether you have enough buns for your dogs? Or if your SPF is high enough
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  #32  
Old 05-26-2010, 12:25 AM
apex1
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All very interesting.

All not very much informed....

Al burns from a lighter!

Steel burns from a candle!

Who is idiotic enough to compare a plate of either material with a mesh, foam or "wool" ?

AL foam can be ignited whith a lighter when carbon content and O is present.

Steel wool can be as easy ignited when the same (high carbon, high O) concentration is present.

Can you imagine a engine room with a throughput of just 30m of air per minute?

The "new" Al foam in question here, has nothing to do with boat or shipbuilding, thats it.
As nobody would assume that any sort of other metal foam or "wool" would have. They burn like hell.

Regards
Richard
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  #33  
Old 05-26-2010, 09:39 AM
ancient kayaker ancient kayaker is offline
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Now we wait for someone to try it on a sailboat.
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  #34  
Old 05-31-2010, 09:11 AM
powerabout powerabout is online now
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Aluminium core in jump ski's (water)has worked great for 30 years.
Aircraft/F1/18foot skiffs( when in their expensive mode)/water skis,thats the order for common usage of new composites as far as I can tell.
As for cheap composites that would be production recreational boat building where anyone can do anything they like.
( like use balsa with polyester non bagged layup)
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Boat builders are not necessarily Boat designers who are not necessarily Engineers who are not builders who are not designers.....
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