This was my first scratch built 57"
Deep Vee hull (hull #1). It was powered by a stock 25cc Homelite trimmer
engine.
I'll explain, with the help of a few photos, how I built my second fiberglass
hull (hull #2). It's basically the same except
I used heavier fiberglass cloth and better epoxy resin which made the hull
alot stiffer.
I started off by marking the hull outline on each piece of white
Styrofoam. Before gluing them up, each outline was cut out. I then
glued the sheets of white Styrofoam together using 3M's Super 77 Spray
Adhesive. Each piece was stacked until I achieved the thickness I
wanted (12"). As I glued each one, I staggered them to achieve the
desired angle at the bow. The back pieces at the transom where cut
off straight.
I choose to use white Styrofoam for a couple of reasons. It's
inexpensive and very easy to sand and shape. Here I'm starting to
shape the hull and give it a little style. I use the word "little" because
the shape of the hull is really basic. Maybe I'll get fancier on
the next one.
Here's the top of the hull finished. Like I said, it's pretty
basic (flat). The edges are angled at about 45 degrees. I won't
win any prizes for it's looks but it's sure fun to build. Check here to
view the overall dimensions.
Here's
a few shots where I'm rough cutting the "V" on the bottom. Final sanding
is always needed to get it just right.
To get the "V" (deadrise) even, I first marked the center line on the transom,
then I measured down both sides until I got the angle I wanted.
So
with about a half a days work the final shaping was complete, now it was
time to start glassing the foam hull.
To avoid seams, I covered the complete hull, except for the top, with
one piece of glass cloth. All the "sharp" edges of the hull
have two layers of glass cloth for extra strength.
Once
the glass cloth has been saturated with resin, it's important to squeegee
the excess off. Here I'm squeegeeing off the second coat of resin.
After the resin cures, I sanded the surface then applied another coat of
resin. This process continues, and continues, and continues until
all the holes in the glass cloth are filled and the surface is smooth to
the touch.
Here's the foam completely glassed.
I cut out the engine compartment and removed the foam. Although
these shots don't show it, the compartment was fully lined with light
ply-wood.
Here you can see what the engine compartment looks like. Once I epoxied
the light ply-wood in place I then applied a thin layer of epoxy
with a brush to seal the wood. At this stage I also added the running
strakes to the hull. They where made up of triangular shaped balsa
wood coated with several coats of epoxy then glued to the hull.
The hull has been primed and here you can see the engine and radio
installation. The engine mount is made up of two pieces of hardwood epoxied
to the bottom of the engine compartment. Custom made engine brackets
attach the engine to the mounts.
I fabricated a box to house the servos and receiver, a cover attaches to
the top to protect everything from water.
The Octura Strudder has been installed on extensions to get the prop
(Octura X472) out in "clean" water. The distance from the transom
to prop with this setup is about 6 inches. I have yet to test the
boat and compare the results with and without this setup to see if it really
makes a noticeable difference in speed (from what I've read it does).
When I do I'll post my results.
Here's a shot of my first boat, for the skeptics (25-30mph), no
speed records yet. As I mentioned at the beginning, this hull was
my first attempt. The hull came out way too soft and subsequently became
damaged.
Although the "finished photos" are of hull #1, the "building photos"
shown here are of hull #2. I used West
System's epoxy which doesn't attack the Styrofoam and with a
much heavier fiberglass cloth (6oz) came out great! It's actually lighter
than hull #1 so I'm hoping for more speed.
I've finally decided on a paint scheme and this graphic shows basically
what the paint job turned out like.
Links
Copyright © '98 '99
'00 '01 George Blanchette
All Rights Reserved
The materials contained in this web site are protected
under the copyright
and trademark laws of the United States and other countries. All
trademarks used in this site are the property of their respectful owners.
Unauthorized distribution, duplications, alteration or other use (whether
for
commercial or non-commercial purposes) of material contained in this site,
including without limitation any trademark, image, drawing, text, likeness
or photograph may constitute a violation of such laws and may be
prosecuted under criminal and/or civil law.
|