Subject:
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Re: Zipper--the two-piece flying helicopter
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Newsgroups:
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lugnet.technic
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Date:
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Wed, 4 Jun 2003 10:45:33 GMT
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Viewed:
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1702 times
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I seriously doubt you could build a flying machine entirely from LEGO. I know
this may sound like 18th Century scoffing, but there are some good reasons for
this.
First is that LEGO plastic is quite dense and makes for fairly thick walls
compared to these flying toys. It floats in water, but only just. To keep the
weight down you would have to use a very thin framework.
The studs, grooves and hollow undersides of LEGO parts simply aren’t smooth
enough to make efficient wings or propellers. You may be able to generate a
flow of air from spinning components, but not enough to lift the moving
components themselves.
LEGO propellors are particularly small, and not very well designed as actual
propulsive devices. These technic ones have quite a rough surface.
Try taking one of the old, ungeared, 9V motors and attaching two propellor
pieces to it at right angles. It’ll certainly generate a draught, but I’d be
surprised if you can feel even the slightest weight reduction.
What is needed is non-LEGO components, such as a lightweight covering shrunk
over a framework wing, and proper model propellors or rotors designed for that
purpose.
I’d be happy for someone to prove me wrong, but I’m not holding my breath!
Jason Railton
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Message has 2 Replies:
 | | Re: Zipper--the two-piece flying helicopter
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| "Jason J Railton" <j.j.railton@ntlworld.com> wrote in message news:HFyDvx.9IF@lugnet.com... (...) that's why i didn't say it's not possible :) i heard someone here who said the lego hovercraft will not work... (...) sorry but it not true i bougt (...) (21 years ago, 4-Jun-03, to lugnet.technic)
| | | Re: Zipper--the two-piece flying helicopter
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| Until I saw this (URL) hovercraft> I took your point of view. Not I am not too sure. There is another person building an airplane wing using a Technic framework (I think axels and flex hoses) wrapped in a plastic sheet of some sort that is shrunk (...) (21 years ago, 4-Jun-03, to lugnet.technic, FTX)
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Message is in Reply To:
| | Re: Zipper--the two-piece flying helicopter
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| (...) Mmmm... Nice idea.... Just a week ago I’ve seen, on a website, a wired ‘Hovering UFO’ like this: (2 URLs) to see more> ...and here another RC 'UFO': (URL) How to realize a so light structure made of LEGO? Maybe using Flex System Hoses? Bye! (...) (21 years ago, 3-Jun-03, to lugnet.technic, FTX)
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