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 Technic / 9854
9853  |  9855
Subject: 
Re: Helicopter project
Newsgroups: 
lugnet.technic
Date: 
Fri, 4 Apr 2003 08:28:15 GMT
Viewed: 
1474 times
  
"Tobbe Arnesson" <StPnAtM@lotek.nu> wrote in message news:HCt7o2.14un@lugnet.com...
In lugnet.technic, Paul Krieg writes:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=38934
The idea is to get it to fly.  I hope you will enjoy what I have so far.

Hm.. I can't view .mov files so I can't see it move (tihi). But my main concern
is speed of the axle. To lift a very small model heli the blades have to spin
pretty fast, or actually very fast.

To get that speed up you'd need a pretty big airsupply like an industrial
compressor or something? Does the thin pneumatic hoses deliver enough air?

Will the motor produce enough power with the high speed?

How will you stop the thing from rotating? Will there be a tail fan or twin
rotors?

And how on earth do you convert the back-n-forth jerking motions of that model
team hub with the pistons into a rotating drive shaft!?!

Pneumatics rule!

i saw it working on .mov file
it works impressive but... you know
my 6 blades rotor made so much air flow
and it didn't even get lighter
so to fly is a very long way...
but the main impression is how fast paul's rotors
(yes there are two counter rotating)
rotates
i'm a little bit shocked
good job paul

and tobbe's right
pneumatics ruleZ! :)

pixel



Message has 2 Replies:
  Re: Helicopter project
 
(...) If you get non-LEGO blades for the rotor it's far from impossible. (...) He's the master of air :) /Tobbe (22 years ago, 4-Apr-03, to lugnet.technic)
  Re: Helicopter project
 
(...) Thanks. It is to you I owe the idea of using plastic cling wrap for the rotor wings. (...) (22 years ago, 4-Apr-03, to lugnet.technic)

Message is in Reply To:
  Re: Helicopter project
 
(...) Hm.. I can't view .mov files so I can't see it move (tihi). But my main concern is speed of the axle. To lift a very small model heli the blades have to spin pretty fast, or actually very fast. To get that speed up you'd need a pretty big (...) (22 years ago, 4-Apr-03, to lugnet.technic)

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