Subject:
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Re: Engineering difficulties
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Newsgroups:
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lugnet.build
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Date:
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Sun, 11 Nov 2001 16:52:21 GMT
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Viewed:
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387 times
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"LegoMasterLuke" <drew@netpluscom.com> writes:
> 1) Tail fin. I'm making some modifications to my P-40 Warhawk, including
> redesigning the tail fin. What is the best way to make a tail fin for such a
> plane? I've tried a couple different methods, and so far its either been too
> small or too big.
I think your latest version is quite good... I assume this was posted
before you had that worked out?
> 2) My next model is a PBY Catalina, which I'm working on at the same time.
> How would one do the rear landing gear? The wheel stays vertical when the
> landing gear is both retracted and extended, but it moves diagonally. (from
> stowed, it moves down and out from the plane's fuselage.) Another difficulty
> on this - not only does it have to move at an angle, but it also has to
> support the plane's weight, which, since the PBY is a fairly good sized
> plane (8 crew members) is respectable.
With my PB4Y, I found that the landing gear wasn't strong enough to
hold up the plane, so I cheated and built a display stand for it.
This has the added advantage of being able to demonstrate the raising
and lowernig of the wheels without having to pick up the model. I'm
not sure how big the PBY is, but the 4Y has a 110 foot wingspan, which
translates to 110 studs. I think the PBY is a bit smaller, but still
quite big.
If I were you I'd be more worried about the hull shape. The PBY is a
very curvy plane. I had a much easier job with the 4Y because it is
pretty boxy in real life.
As for the mechanism of the wheels, probably the easiest way would be
to use the Technic 1x4 plate with teeth (rack), mounted on a 1xN
plate. Attaching the wheels will be tricky though. Probably
something can be arranged using Technic angle connectors but it will
be an interesting task.
I'd recommend motorizing the wheel movement, and not trying to make
them strong enough to support the model.
I'm really looking forward to seeing what you come up with for the
PBY.
> And another thing - am I going to have to verify that I posted EVERY
> freaking post I make? Its REALLY annoying having to check my email after I
> post a single message.
You could use the web interface; if you're logged in, there's no need
to confirm. I often do that when posting, even though I browse using
the NNTP interface. Also, when I do post via NNTP, I usually do all
the confirmation e-mails in a single batch after I'm done reading
LUGNET for a while, rather than confirming each message as I post it.
Hope that helps.
--Bill.
--
William R Ward bill@wards.net http://www.wards.net/~bill/
-----------------------------------------------------------------------------
If you're not part of the solution, you're part of the precipitate.
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Message has 1 Reply:
 | | Re: Engineering difficulties
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| (...) Yes, it was. I finally decided on using a click hinge to hold the tailfin in a vertical position. I'm quite pleased with the end results. (...) You are correct - the PBY Catalina has a wingspan of 104 feet, and a length of 63 feet, just a (...) (23 years ago, 11-Nov-01, to lugnet.build)
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Message is in Reply To:
| | Engineering difficulties
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| 1) Tail fin. I'm making some modifications to my P-40 Warhawk, including redesigning the tail fin. What is the best way to make a tail fin for such a plane? I've tried a couple different methods, and so far its either been too small or too big. 2) (...) (23 years ago, 9-Nov-01, to lugnet.build)
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