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Brian,
The domed steel plate for the hatch cover is "off the shelf"
stuff. You can get tank ends which have the full ellipse which match up to
a cylinder nicely, or you can get them as my hatch cover is, with just one
radius. As you see the domed plate, is the way it arrived. No
trimming necessary. All I did was cut the hole and put the little
viewport in the center, then weld it to the ring that mates to the conning
tower when the hatch is closed. The machining was done after the
welding. I'd have to measure the height of it to be exact. The three
inches is a best guess, sitting here at the computer as I am. It's a
standard radius for its size though.
If you need more detail, I'll look through my
papers.
Dan H.
----- Original Message -----
Sent: Tuesday, December 06, 2005 1:11
AM
Subject: Re: [PSUBS-MAILIST] Dan, hatch
Q, and paint
Dan,
Yes,
that 3" measurement is what I was after. $400 is definately worth
it. That seems like a good hatch design, I see a lot of subs with
hatches like that, except for maybe Freya, which has a rather massive
hatch.
Thanks for the info,
Brian
----- Original Message -----
Sent: Monday, December 05, 2005
20:13
Subject: Re: [PSUBS-MAILIST] Dan, hatch
Q, and paint
Brian,
I'm not sure what your asking. My conning tower and
hatch cover rings are 25 inches in diameter. The hatch cover
is dome shaped steel about three inches high. I guess that's what your
asking. If I placed the hatch cover on a flat surface, the top would
be about three inches high. The hatch is 3/8 thick. The
ring it's welded to is 5/8 thick.
Thanks! I painted it. I sprayed it at a
friends shop. He has a high paint booth and a small crane to handle
the sub with. The paint wasn't cheep. I used a
two part epoxy primer and a two part epoxy paint. Epoxy
paints are sprayed on all the time. Most auto paints are now two part
epoxy paints but they all use a base coat with color, then clear coat over
that. The paint I used on the sub is
called Imron. No clear over top. It has color all the way
through. It's really tough stuff but expensive. Between primer,
paint, thinners and hardeners for the sub and trailer, I have $400 in
materials.
You have a reasonable amount of time to paint and clean
up, but you can't save any left-overs once you mix it. By the next
day, it's rubber in a can.
Dan H.
----- Original Message -----
Sent: Monday, December 05, 2005 9:19
PM
Subject: [PSUBS-MAILIST] Dan, hatch
Q, and paint
Dan,
I was wondering
what the radius of your hatch is, that is, the dome part ? Also the
thickness? Your paint job looks really nice! Did you have
someone do that for you ? I looks like it was sprayed, It is
most likely an epoxy, I didn't think those epoxies could be
sprayed, if so you'd have to clean the thing fast!
Thanks
Brian
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