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 11:00:51 GMT
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Viewed:
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1767 times
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"Jason J Railton" <j.j.railton@ntlworld.com> wrote in message news:HFyDvx.9IF@lugnet.com...
> I seriously doubt you could build a flying machine entirely from LEGO. I know
> this may sound like 18th Century scoffing,
that's why i didn't say it's not possible :)
i heard someone here who said the lego hovercraft will not work...
> 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.
sorry but it not true
i bougt some sets form auctions
and washed them
the definitely sink
if they don't they have some air bubbles underneath
(not inside the material but in corners and hollows)
> 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.
that's not the real problem
> LEGO propellors are particularly small, and not very well designed as actual
> propulsive devices. These technic ones have quite a rough surface.
forget the TLC propellers
the can be used with rubber belt-powered device (maybe) but not with electric motors
> 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.
nothing happens
even if you deliver 12 or more V
> 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.
the propeller is not a problem for me
i could build the wing acording to ie oyvind's idea
but i coannot design gearing to move (rotate it speed enough)
> I'd be happy for someone to prove me wrong, but I'm not holding my breath!
it was not my goal to prove you are wrong
but we are going to develop really fluing machine and
we did some tests and observations
we means the members
best regards
pixel
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Message has 1 Reply:
 | | Re: Zipper--the two-piece flying helicopter
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| (...) Well, that hovercraft uses a large non-LEGO film for the skirt. (...) So, okay, you're saying it's EVEN DENSER and less likely to fly. (...) It is if you're using LEGO for the wing. It's not if you're going to use some other material. (...) So (...) (21 years ago, 5-Jun-03, to lugnet.technic)
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Message is in Reply To:
| | Re: Zipper--the two-piece flying helicopter
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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 (...) (21 years ago, 4-Jun-03, to lugnet.technic, FTX)
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