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carioux2008 - 09 Sep 2007 02:24 GMT

So, i have figured out the motor question, now my question is what is
the best kind of wood to use on the hul of a boat. I was going to go
with 2-3mm wood, but was unsure of the type. I also planned to use .25
inch hardwood for the bulkheads and such. Also, does anybody know what
else i need to get, well the details. I have no clue what to get for
the drive system or rudder or cooling. I would like to have it so if i
had to stop for a second and it was in the middle of a lake that i
wouldnt have to shut it down to prevent it from overheating. This would
mean i need a water pump, but i dont know where to get one.

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carioux2008

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BCRandy - 09 Sep 2007 14:04 GMT

I have used hobby grade plywood: 1/16" for sheeting the
hull and 1/8" for bulkheads. Home Depot also sells "door
skins" which are a 1/8", 3 ply, plywood that you can use if
weight isn't a concern. 1/4" poplar works well for
transoms. Also, Home Depot's square "dowels" have come in
handy for framing and motor mounts and I've used their paint
stir sticks for battery holders, etc.

My favorite material, though, is foam. I tried the white 2"
insulation foam from Home Depot but their pink or blue 3/4"
foam sheathing has a smoother texture and finishes more
easily. I use spray glue to laminate sheets of it to get
the thickness I need. I sometimes add sheet balsa where
needed for strength. I do some cutting with a hack saw
blade on my bandsaw and use a hot wire run off a car battery
for other cuts. It is easy to shape with sandpaper and 3-4
coats of water based polyurethane seals the foam, allowing
the use of any paint for the finish. I just completed a 19"
x 9" foam air boat powered by a brushless outrunner. I
finished it with low temp monocoat which worked well. With
everything but the battery, it weighs in at 1 lb, 8 oz - not
a lightweight, but my 8 yo nephew has fun with it.

"carioux2008"

> So, i have figured out the motor question, now my question
> is what is
[quoted text clipped - 14 lines]
> mean i need a water pump, but i dont know where to get
> one.

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Model Forum / Radio Controlled / Water Models / September 2007

Building Material