One off composite hull

[Einarr]

I have an idea for a one off composite hull idea.

1/4" luan
1" x strip fir/pine planking
1/4" luan
fiberglassed exterior

It is an epoxy wood composit that provided some reserve bouyance, insulation and strength.

I realize that it would be rather on the heavy end and this applicable only for larger boats.

Comments?

[JimConlin]

Don't use lauan in a boat that will be exposed to water.

[michigangeorge]

:DDon't use lauan in a boat that will be exposed to water.

That is one of the best I've seen on the forum :-):D:D:D

[mmd]

<wink, grin>

One normally tries to develop the scantlings to suit the hull, not the other way 'round...

[Einarr]

Don't use lauan in a boat that will be exposed to water.

Pardon for disagreeing, but I have a little luan and eopxy punt that I have been using in the summers as a river camping boat. It is used 10 - 12 times a year, has been for the past 12. To date I have not had any problems with it.

[Cuyahoga Chuck]

First, I don't see the sense of it.
Standard glass encapsulated strip hulls have a solid engineering basis. The strips provide the shape and also the core material that improves on the stiffness of the finished composit. Stips are peachy for certain hull shapes.
Hulls planked with sheet goods are better for a completely different body of hull shapes unless you cut the goods into strips and apply it cold molded fashion. There is a limiting factor in the amount of curve one-piece plywood planks will accept.
What you would get by trying to combine the two styles would have to be extra special to make it worthwhile to struggle thru' it all.

[Einarr]

Don't use lauan in a boat that will be exposed to water.

For those who are using Meranti in boat building, it is actially Luaun.

Dark Red Meranti-Red Luaun Group

http://www2.fpl.fs.fed.us/TechSheets/Chudnoff/SEAsian_Oceanic/htmlDocs_seasian/shorea_spp_drmeranti.html

Weight: Basic specific gravity (ovendry weight/green volume) averages about 0.55
Air-dry density 42 pcf.
Moisture content 17%
Bending strength(Psi) 9,900
Modulus of elasticity(1,000 psi) 1,400
Maximum crushing strength(Psi) 4,920
Janka side hardness 780 to 825 lb for dry material.

[George Roberts]

"I have an idea for a one off composite hull idea."

Rather specific for the core material. Rather vague for the skin material.

Rather vague about the usage.