Re: [bolger] Plywood hull stove in: suggestions on repairs?
I patched two holes, one from dropping an anchor through the
bottom and one from ramming, by cutting out the damaged
part, fitting a piece of plywood in , gooping epoxy around
the edges, and fiberglassing both sides. This was 14 years
ago and the boat is still going.
HJ
John Kennedy wrote:
bottom and one from ramming, by cutting out the damaged
part, fitting a piece of plywood in , gooping epoxy around
the edges, and fiberglassing both sides. This was 14 years
ago and the boat is still going.
HJ
John Kennedy wrote:
>
> Again, the boat is OT, even if the problem is not. My Fireball (well, it
> will be mine next week) hit the rocks some time ago. The bottom and the
> bilge panels are punctured badly in several places. I'm not certain if
> much plywood is actually missing: a 30-minute inspection near dusk indicated
> more that the plywood is badly fractured.
>
> Presuming that most of the plywood is there, but bent out of shape, if I'm
> better off to replace panels, to scarf in dutchmen, or to push the broken
> pieces flat and epoxy-glue them back into position (possibly with glass
> reinforcement on the inside)?
>
> Anyone else ever face this sort of repair job? Any hints?
>
> Thanks.
>
John,
I have an old UK Enterprise that has been stoved in so many times,
I have lost count. I second the motion. Cut out a patch of similar
material (in my case, I had a frp boat) and then glass and epoxy it
in place. If you can do it from the inside, all the better. You can
then fill and grind from the outside to make a fair hull.
My Ent. has molded in ballast tanks that make access to the
exterior hull very difficult, I installed inspection / repair ports
into the hull to facilitate this.
I would use a few layers of glass that build up from small to
large size patches. grind away enough material around the patch to
get a good glue bond. You should be golden.
I once dropped my Bolger Nymph prior to glassing her, I was able
to make an almost invisible patch this way with 1/4" ply, glass, and
epoxy. It was probably the strongest part of the boat. :-0
David Jost
I have an old UK Enterprise that has been stoved in so many times,
I have lost count. I second the motion. Cut out a patch of similar
material (in my case, I had a frp boat) and then glass and epoxy it
in place. If you can do it from the inside, all the better. You can
then fill and grind from the outside to make a fair hull.
My Ent. has molded in ballast tanks that make access to the
exterior hull very difficult, I installed inspection / repair ports
into the hull to facilitate this.
I would use a few layers of glass that build up from small to
large size patches. grind away enough material around the patch to
get a good glue bond. You should be golden.
I once dropped my Bolger Nymph prior to glassing her, I was able
to make an almost invisible patch this way with 1/4" ply, glass, and
epoxy. It was probably the strongest part of the boat. :-0
David Jost
I repaired a plywood Windmill one time by cutting out the bad spots, filling with new plywood and classing with epoxy on both sides. Worked for years.
Ken
Ken
----- Original Message -----
From: John Kennedy
To:bolger@yahoogroups.com
Sent: Wednesday, August 29, 2001 9:35 AM
Subject: [bolger] Plywood hull stove in: suggestions on repairs?
Again, the boat is OT, even if the problem is not. My Fireball (well, it
will be mine next week) hit the rocks some time ago. The bottom and the
bilge panels are punctured badly in several places. I'm not certain if
much plywood is actually missing: a 30-minute inspection near dusk indicated
more that the plywood is badly fractured.
Presuming that most of the plywood is there, but bent out of shape, if I'm
better off to replace panels, to scarf in dutchmen, or to push the broken
pieces flat and epoxy-glue them back into position (possibly with glass
reinforcement on the inside)?
Anyone else ever face this sort of repair job? Any hints?
Thanks.
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--- In bolger@y..., John Kennedy <john.kennedy@g...> wrote:
the
If I remember the "Fireball" correctly it is not easy to get at the
inside. What a bummer.
Years ago before epoxy I bought a "Bluejay" that had a sizable hole
stove in the topsides. A condition of the sale was repair of the
hole.
The repair was done by a professional. He used a backup glued with
resorcinal glue and filled the hole with some kind of filler that
worked just fine.
Not so many years ago I stove in the side of my trimaran. The damage
was essentially torn plywood. The surface (epoxy, paint etc) was
not damaged nor was the ply broken at the frames. I used the same
strategy. I backed up the whole panel from frame to frame with
a plywood backup and used lots of epoxy. Pretty crude but it worked
fine. If you can't access the inside to work on it you could
use drywall techniques for fastening the backup in place and then fit
in dutchment or just fill it with microballoon mix. You could also
just use screws from outside to bring the backup in tight. If you are
going to race in the Fireball nationals you will probably want to
replace the broken skin entirely; you won't want the added weight.
I don't think using glass as you suggest would be as secure but that
solution should work. You wouldn't want to hit the repair on the
rocks
again though; I think that sort of repair would not be as strong as
the original structure. Now if you glassed both sides that should
work
fine. A regular Payson butt joint more or less.
Bob Chamberland
> Again, the boat is OT, even if the problem is not. My Fireball(well, it
> will be mine next week) hit the rocks some time ago. The bottomand
the
> bilge panels are punctured badly in several places. I'm notcertain if
> much plywood is actually missing: a 30-minute inspection near duskindicated
> more that the plywood is badly fractured.if I'm
>
> Presuming that most of the plywood is there, but bent out of shape,
> better off to replace panels, to scarf in dutchmen, or to push thebroken
> pieces flat and epoxy-glue them back into position (possibly withglass
> reinforcement on the inside)?Hi John,
>
> Anyone else ever face this sort of repair job? Any hints?
>
> Thanks.
If I remember the "Fireball" correctly it is not easy to get at the
inside. What a bummer.
Years ago before epoxy I bought a "Bluejay" that had a sizable hole
stove in the topsides. A condition of the sale was repair of the
hole.
The repair was done by a professional. He used a backup glued with
resorcinal glue and filled the hole with some kind of filler that
worked just fine.
Not so many years ago I stove in the side of my trimaran. The damage
was essentially torn plywood. The surface (epoxy, paint etc) was
not damaged nor was the ply broken at the frames. I used the same
strategy. I backed up the whole panel from frame to frame with
a plywood backup and used lots of epoxy. Pretty crude but it worked
fine. If you can't access the inside to work on it you could
use drywall techniques for fastening the backup in place and then fit
in dutchment or just fill it with microballoon mix. You could also
just use screws from outside to bring the backup in tight. If you are
going to race in the Fireball nationals you will probably want to
replace the broken skin entirely; you won't want the added weight.
I don't think using glass as you suggest would be as secure but that
solution should work. You wouldn't want to hit the repair on the
rocks
again though; I think that sort of repair would not be as strong as
the original structure. Now if you glassed both sides that should
work
fine. A regular Payson butt joint more or less.
Bob Chamberland
Again, the boat is OT, even if the problem is not. My Fireball (well, it
will be mine next week) hit the rocks some time ago. The bottom and the
bilge panels are punctured badly in several places. I'm not certain if
much plywood is actually missing: a 30-minute inspection near dusk indicated
more that the plywood is badly fractured.
Presuming that most of the plywood is there, but bent out of shape, if I'm
better off to replace panels, to scarf in dutchmen, or to push the broken
pieces flat and epoxy-glue them back into position (possibly with glass
reinforcement on the inside)?
Anyone else ever face this sort of repair job? Any hints?
Thanks.
will be mine next week) hit the rocks some time ago. The bottom and the
bilge panels are punctured badly in several places. I'm not certain if
much plywood is actually missing: a 30-minute inspection near dusk indicated
more that the plywood is badly fractured.
Presuming that most of the plywood is there, but bent out of shape, if I'm
better off to replace panels, to scarf in dutchmen, or to push the broken
pieces flat and epoxy-glue them back into position (possibly with glass
reinforcement on the inside)?
Anyone else ever face this sort of repair job? Any hints?
Thanks.