WoodDragon
Recruit
- Joined
- Sep 18, 2006
- Messages
- 4
Hi all,
I've just started down the path to return this
boat to doing some fishing. The things in this
first post are the ones I've posted the last few
days on my local fishing forum so they might
seem a lit chaotic but it will bring up to date on
a few things I'm thinking of and wandering about
The link to my website is most likely down until
the morning they are doing maintenance tonight
from midnight to 4am eastern time I believe.
I'm starting to redo this 1975
Magnum boat.
https://tejascreations.sslpowered.com/Magnum/BoatRetoration.html
Today I've been getting the old flotation
foam out of the boat.
I do not think this stuff will ever dry out
when it gets water in it or gas.
I believe the last time the boat
was on the water was 2 years ago.
It could not have rained much in the
boat over the last year I'd think.
but the foam is saturated with water
until you get to the stern and it is full
of old gas. I'd take a guess and say that
there was around 50 gallons of water in
the foam and 2 gallons of old gas.
If the foam had not been touching the stringers
they would not have rotted. But if the factory
had done the job right when installing them in
the first place it would have helped. When they
glassed them over about 10%-15% of the cloth
never got any resin on it, so it had many open
paths for water to soak into the stringers.
The worst of the rot is in the runners
and transom that was touching the foam.
After seeing this up close and inside first
hand I do not think to much of foam for flotation
so I guess I'm finally getting to the first point.
Alternatives
The only other thing I know of for
floatation is sealed chamber and I'm
going to come up with something to do
it this way with.
I have a couple of ideas in mind, any
one have any ideas or seen some kind
of set up.
The next ? here does anyone know off
hand how to figure how much lift you
get form a fixed volume of air.
Transom -
I'm going to be replacing the transom
as well. I've seen at least 3 different
ways on the net that they have been made
that I'm willing to consider.
All use marine fir 0.75", two pieces
laminated together this is where the
difference is.
On one set the 2 pieces are first epoxied,
then a layer of 6oz cloth is glassed over
the 2 insides that will meet then a layer
of woven roving is glassed to the inside of
one. And then the 2 halves where laminated
together after all this set up.
The other the epoxied the 2 pieces, then
laminated them together adding 1 layer of
6oz cloth at the same time between them.
The other was epoxied then laminated together
with just epoxy.
All where then glassed over on the outside.
Any ideas on these others, not interested in
pour in type.
At this point I plan on cutting the skin
off of the inside of the transom and going
at it from that direction.
And if your wandering why I'd do such a
crazy thing as to buy a boat like this in
the first place. Well if you need to ask
you'd never get it anyway. You should have
seen my jeep when I first bought it, now
its been my daily for 6 years and will be
for another 20 or until I get to old to
crawl up into it.
Enough for now I do have a tendency to
rattle at times
Thanks for the input
Wood Dragon
This in a way is what I've been thinking.
stringers
But Make the chambers to go between the
stringers like this out of a closed cell
foam glassed over.
Not from 2 part pourable foam but a built
up sheet.
Wood Dragon
Added a couple more pics.
One shows where in a hurry to build a boat.
The floatation foam was put in before the
resin even had time to set up much at all.
As it expanded it pushed its way under the
glass in a dozen spots around the runners
and under a whole lot of the edges, up to
the edge of the wood. Now that's how you make a wicking system to rot your
wood as fast as possible
And a couple of other pics of what it looks
like at this stage.
https://tejascreations.sslpowered.com/Magnum/BoatRetoration_001.html
Wood Dragon
Amazing how much grip that water soak half
rotten center stringer still has a grip
on the hull. Got the glassed in cap off
of it this afternoon thinking as soft as
the wood is I'd might be able to pull it
up, No Way.
I guess I'll get the jig saw out and cut
it off as close as I can to the hull and
chisel the rest out.
I'd bet I was pretty close about the 50 gallons
of water the foam was holding I've put all the
pieces in a container I have and me and a friend
can not lift it. Don't know what just the foam
would way but I'd bet that container ways at
least 500 lbs. With water weighting 8.35 lbs.
per gallon even if you just say 400 lbs was
water that is still 48 gallons of water.
That is a lot of extra weight soaked foam
will make you haul around in your boat.
Wed. will be the next day I get to do
some stuff on it. Have to do things in
the real world tomorrow.
Wood Dragon
I've just started down the path to return this
boat to doing some fishing. The things in this
first post are the ones I've posted the last few
days on my local fishing forum so they might
seem a lit chaotic but it will bring up to date on
a few things I'm thinking of and wandering about
The link to my website is most likely down until
the morning they are doing maintenance tonight
from midnight to 4am eastern time I believe.
I'm starting to redo this 1975
Magnum boat.
https://tejascreations.sslpowered.com/Magnum/BoatRetoration.html
Today I've been getting the old flotation
foam out of the boat.
I do not think this stuff will ever dry out
when it gets water in it or gas.
I believe the last time the boat
was on the water was 2 years ago.
It could not have rained much in the
boat over the last year I'd think.
but the foam is saturated with water
until you get to the stern and it is full
of old gas. I'd take a guess and say that
there was around 50 gallons of water in
the foam and 2 gallons of old gas.
If the foam had not been touching the stringers
they would not have rotted. But if the factory
had done the job right when installing them in
the first place it would have helped. When they
glassed them over about 10%-15% of the cloth
never got any resin on it, so it had many open
paths for water to soak into the stringers.
The worst of the rot is in the runners
and transom that was touching the foam.
After seeing this up close and inside first
hand I do not think to much of foam for flotation
so I guess I'm finally getting to the first point.
Alternatives
The only other thing I know of for
floatation is sealed chamber and I'm
going to come up with something to do
it this way with.
I have a couple of ideas in mind, any
one have any ideas or seen some kind
of set up.
The next ? here does anyone know off
hand how to figure how much lift you
get form a fixed volume of air.
Transom -
I'm going to be replacing the transom
as well. I've seen at least 3 different
ways on the net that they have been made
that I'm willing to consider.
All use marine fir 0.75", two pieces
laminated together this is where the
difference is.
On one set the 2 pieces are first epoxied,
then a layer of 6oz cloth is glassed over
the 2 insides that will meet then a layer
of woven roving is glassed to the inside of
one. And then the 2 halves where laminated
together after all this set up.
The other the epoxied the 2 pieces, then
laminated them together adding 1 layer of
6oz cloth at the same time between them.
The other was epoxied then laminated together
with just epoxy.
All where then glassed over on the outside.
Any ideas on these others, not interested in
pour in type.
At this point I plan on cutting the skin
off of the inside of the transom and going
at it from that direction.
And if your wandering why I'd do such a
crazy thing as to buy a boat like this in
the first place. Well if you need to ask
you'd never get it anyway. You should have
seen my jeep when I first bought it, now
its been my daily for 6 years and will be
for another 20 or until I get to old to
crawl up into it.
Enough for now I do have a tendency to
rattle at times
Thanks for the input
Wood Dragon
This in a way is what I've been thinking.
stringers
But Make the chambers to go between the
stringers like this out of a closed cell
foam glassed over.
Not from 2 part pourable foam but a built
up sheet.
Wood Dragon
Added a couple more pics.
One shows where in a hurry to build a boat.
The floatation foam was put in before the
resin even had time to set up much at all.
As it expanded it pushed its way under the
glass in a dozen spots around the runners
and under a whole lot of the edges, up to
the edge of the wood. Now that's how you make a wicking system to rot your
wood as fast as possible
And a couple of other pics of what it looks
like at this stage.
https://tejascreations.sslpowered.com/Magnum/BoatRetoration_001.html
Wood Dragon
Amazing how much grip that water soak half
rotten center stringer still has a grip
on the hull. Got the glassed in cap off
of it this afternoon thinking as soft as
the wood is I'd might be able to pull it
up, No Way.
I guess I'll get the jig saw out and cut
it off as close as I can to the hull and
chisel the rest out.
I'd bet I was pretty close about the 50 gallons
of water the foam was holding I've put all the
pieces in a container I have and me and a friend
can not lift it. Don't know what just the foam
would way but I'd bet that container ways at
least 500 lbs. With water weighting 8.35 lbs.
per gallon even if you just say 400 lbs was
water that is still 48 gallons of water.
That is a lot of extra weight soaked foam
will make you haul around in your boat.
Wed. will be the next day I get to do
some stuff on it. Have to do things in
the real world tomorrow.
Wood Dragon
