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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Thu, 5 Jun 2003 17:34:16 GMT
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Viewed:
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3883 times
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In lugnet.technic, Paul Kleniewski wrote:
> that's why i didn't say it's not possible :)
> i heard someone here who said the lego hovercraft will not work...
Well, that hovercraft uses a large non-LEGO film for the skirt.
> > 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
So, okay, you're saying it's EVEN DENSER and less likely to fly.
> > 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
It is if you're using LEGO for the wing. It's not if you're going to use some
other material.
> > 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
So what are you going to use? One that isn't made out of LEGO at all, I
presume.
> > 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)
These are all using non-LEGO components.
> > 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
Yes, by using non-LEGO parts. All you've done is prove me RIGHT!
If you want to use other components and build an aircraft, fine. But that's not
what I was talking about.
Jason Railton
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Message has 1 Reply:
 | | Re: Zipper--the two-piece flying helicopter
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| "Jason J Railton" <j.j.railton@ntlworld.com> wrote in message news:HG0rH4.Ho2@lugnet.com... (...) (URL) > the propeller... (...) yeah so we can stop talking i thought the idea is to buid flying machine (as pure as possible from lego parts) because (...) (23 years ago, 6-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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| "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 (...) (23 years ago, 4-Jun-03, to lugnet.technic)
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