Re: [bolger] final photo posted
On 8/19/07, dnjost <davidjost@...> wrote:
life span. I recall Bolger writing that the conventional view about
wood boats used to be that they were intended to last about as long as
a modern day automobile. To our grandfather's generation, a twenty
year life would be about normal for a wooden boat. And to the
contrary today, expecting a wooden boat to last forever is unnatural.
Go quickly build another. I vote for a Shivaree.
>Actually, I find it natural to see that wooden boats have a finite
> You can view the final photo of Diablo - warning this picture may not
> be suitable for wooden boat builders.
life span. I recall Bolger writing that the conventional view about
wood boats used to be that they were intended to last about as long as
a modern day automobile. To our grandfather's generation, a twenty
year life would be about normal for a wooden boat. And to the
contrary today, expecting a wooden boat to last forever is unnatural.
Go quickly build another. I vote for a Shivaree.
Paul -
Yes, All frames and seams were done with epoxy grout and tape. I
can't remember what filler I used but tend to think I mixed 407
filler with Cab-o-Sil to stretch the mix. there were no failures of
the fillets. I did have several spots inside where tape that was
only in contact with the plywood let go after several years and had
to be redone. This was moisture and sunlight related.
the exterior was done with Dynel cloth set in epoxy. This is
incredibly strong. It took several whacks with the sledge to
puncture it. Where the wood was rotted, the sledge went right
through.
Most notable was the strength of the stem. I could not break the
bond and had to hand cut it in half to dispose of it. The stem was
fillet, then two layers of tape applied and then glassed outside. No
rot in the stem. However, the area in the bow where the foam was
poured was thoroughly rotted through with black wood indicative of
extensive water damage.
Ren Tolman skiffs require that both sides of the plywood are glassed
prior to assembly. this seems like an excellent approach and I am
sure the skiff would have outlasted me Had I used this approach. food
for thought. I may also try preheating the pieces then letting them
cool to draw in a thinned layer of epoxy prior to glassing.
David Jost
Yes, All frames and seams were done with epoxy grout and tape. I
can't remember what filler I used but tend to think I mixed 407
filler with Cab-o-Sil to stretch the mix. there were no failures of
the fillets. I did have several spots inside where tape that was
only in contact with the plywood let go after several years and had
to be redone. This was moisture and sunlight related.
the exterior was done with Dynel cloth set in epoxy. This is
incredibly strong. It took several whacks with the sledge to
puncture it. Where the wood was rotted, the sledge went right
through.
Most notable was the strength of the stem. I could not break the
bond and had to hand cut it in half to dispose of it. The stem was
fillet, then two layers of tape applied and then glassed outside. No
rot in the stem. However, the area in the bow where the foam was
poured was thoroughly rotted through with black wood indicative of
extensive water damage.
Ren Tolman skiffs require that both sides of the plywood are glassed
prior to assembly. this seems like an excellent approach and I am
sure the skiff would have outlasted me Had I used this approach. food
for thought. I may also try preheating the pieces then letting them
cool to draw in a thinned layer of epoxy prior to glassing.
David Jost
That was a sad final photo, but 20 years for a boat made with
inexpensive materials isn't too bad. The information though on what
did well was interesting and should be useful.
Was any epoxy used in the construction?
Paul H.
inexpensive materials isn't too bad. The information though on what
did well was interesting and should be useful.
Was any epoxy used in the construction?
Paul H.
--- Inbolger@yahoogroups.com, "dnjost" <davidjost@...> wrote:
>
> You can view the final photo of Diablo - warning this picture may
not
> be suitable for wooden boat builders. I guess that gives it a
rating
> of NWBB (no wooden boat builders). view at
>http://mysite.verizon.net/vzeokhsb/Diablo%20rot.htmlif you dare.
>
> It was kind of interesting that it only took an hour to rip it up
> into managable bits. Lesson learned upon the dissection.
>
> 1. Any mahogany was still in mint condition (As a New England
> yankee, I felt obligated to use any wood in my garage first).
>
> 2. Kiln Dried spruce can and will rot very quickly if left in
> contact with the ground.
>
> 3. When the boat was stored along salt water shores it did not
> deteriorate as quickly.
>
> 4. White oak was still good.
>
> 5. ACX ply holds water quite well and delaminates as the water
> creeps through the plys.
>
> 6. Marine grade ply fared better where used (seats/transom).
>
> Hope that helps someone out there. I really got a lot of use out
of
> this boat for very little money.
>
> David Jost
>
You can view the final photo of Diablo - warning this picture may not
be suitable for wooden boat builders. I guess that gives it a rating
of NWBB (no wooden boat builders). view at
http://mysite.verizon.net/vzeokhsb/Diablo%20rot.htmlif you dare.
It was kind of interesting that it only took an hour to rip it up
into managable bits. Lesson learned upon the dissection.
1. Any mahogany was still in mint condition (As a New England
yankee, I felt obligated to use any wood in my garage first).
2. Kiln Dried spruce can and will rot very quickly if left in
contact with the ground.
3. When the boat was stored along salt water shores it did not
deteriorate as quickly.
4. White oak was still good.
5. ACX ply holds water quite well and delaminates as the water
creeps through the plys.
6. Marine grade ply fared better where used (seats/transom).
Hope that helps someone out there. I really got a lot of use out of
this boat for very little money.
David Jost
be suitable for wooden boat builders. I guess that gives it a rating
of NWBB (no wooden boat builders). view at
http://mysite.verizon.net/vzeokhsb/Diablo%20rot.htmlif you dare.
It was kind of interesting that it only took an hour to rip it up
into managable bits. Lesson learned upon the dissection.
1. Any mahogany was still in mint condition (As a New England
yankee, I felt obligated to use any wood in my garage first).
2. Kiln Dried spruce can and will rot very quickly if left in
contact with the ground.
3. When the boat was stored along salt water shores it did not
deteriorate as quickly.
4. White oak was still good.
5. ACX ply holds water quite well and delaminates as the water
creeps through the plys.
6. Marine grade ply fared better where used (seats/transom).
Hope that helps someone out there. I really got a lot of use out of
this boat for very little money.
David Jost