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Subject: 
Re: Bofors Quad 40
Newsgroups: 
lugnet.build.military
Date: 
Fri, 21 Feb 2003 03:44:30 GMT
Viewed: 
1236 times
  
In lugnet.build.military, Lindsay Frederick Braun writes:


  To be "minifig scale" the ship would have had to be 22 feet
  long.  That's a little bit big, unless I buy a minivan.  ;)

Wow, that's big! Same reason I'm not committing to anything bigger, at least
until I buy a house first.



It will be fixed to the deck with a 2x2 turntable. If there is no woble in the
construction (for example tiles around the turntable) then the connection is
remarkably strong. I discovered this when building my Sherman kit as the whole
turret assembly is connected with a single 2x2 turntable and it's almost
imposible to break the connection with the hull floor.  I've posted a quick
snapshot of how I did it on the Quad 40 here:

http://www.brickmania.com/Gallery2/war/Quad40e.jpg

  That's an extremely interesting solution.  Given the
  mass of the mount, I'll be interested to see how it
  pans out when it's actually in situ.  (Lord knows I
  have enough of those 8x8 vent tiles to try it myself!)
  My plan was merely to tile around the mount and hold
  it tight that way, and the problem arose because I
  had the 2x2 turntable on a joint between plates.

Have you tried burying a 4x4 turntable into the works, or even that huge technic
turntable? There is also a pretty cool turntable in that Mindstorms R2-D2, but
it's blue.

  You'll have to let me know on a test mounting how
  strong it is.  I expect that with the blast shield
  in place, that mount will be heavier than anything
  you've ever held on by a 2x2 turntable before.  That
  is what causes the problem, or at least what did
  for me.

That's pretty much whole works as you've seen.  The connection to the deck will
be the round plates under that vent tile.


  Speaking of the blast shield, that's what I forgot
  to ask before; do you have one mocked (MOCed?) up
  or is that still to come?  It has some very strange
  curves indeed, but it's one of the truly recogniz-
  able features of the Bofors system as used in US
  warships.  It was also effective, especially against
  debris from kamikaze attacks!  (Ask any of the crew
  of the USS Franklin about *that* one!)

I actually have not seen this mounting on a Cleveland cruiser with any blast
shield beyond the circular gun tub it sits in. The sides of the tub are such
that the guns rest just above them at a horizontal level. The gunner is exposed
only above the shoulders in the horizontal plane, but obviously this wasn't
enough protection! On the Baltimore class heavy cruisers (and presumably the
Essex class carriers) there is a really boxy looking blast shield that protects
the gunners above the sides of the tub.  If I were to add this feature I would
probably use thin wall panels to save weight.

My daughter isn't going to let me get away with building any ship until I finish
her castle, so there's going to be a lot of time to think about my actual final
design.  Who know's what I'll end up building until then...

Of course I'd be interested in seeing a "full size" version of yours, so get
building! haha!

Thanks for the comments!

Dan



Message is in Reply To:
  Bofors Quad 40
 
(...) To be "minifig scale" the ship would have had to be 22 feet long. That's a little bit big, unless I buy a minivan. ;) (...) That's always the limiting factor. It was for me, too. (...) mass of the mount, I'll be interested to see how it pans (...) (22 years ago, 16-Feb-03, to lugnet.build.military)

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