 | | orrery update —Don Rogerson
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| | | My Orrery page has been getting a lot of hits from the link on Andrew Lipson's page (Thanks, Andrew!) so I thought I'd let people know I've added the LDraw files and put up some other projects at (URL) (21 years ago, 3-Feb-03, to lugnet.technic)
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| | | | | Re: flying helicopter? (was: orrery update) —Ross Crawford
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| | | | (...) Just browsed your site fully and wow cool! A suggestion for your helicopter - if you can build a single rotor with enough lift, why not just build 2 and connect them, like the chinook (URL) way the extra weight is offset by the extra lift 8?) (...) (21 years ago, 5-Feb-03, to lugnet.technic)
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| | | | | | Re: flying helicopter? (was: orrery update) —Don Rogerson
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| | | | (...) Ross - The challenge I'd run into would be coordinating the blades so they don't chop each other to pieces. Or I'd have to space them out quite a bit - the rotor I used in my last try had a radius of about 16L. Another problem I'd face is (...) (21 years ago, 5-Feb-03, to lugnet.technic)
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| | | | | | Re: flying helicopter? (was: orrery update) —Ross Crawford
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| | | | | (...) The chinook gets around this by having the rotors on different levels - the rear one is sufficiently high to ensure it can't hit the front. (...) Yes, enough power to lift a LEGO helicopter would definitely be a challenge 8?) ROSCO (21 years ago, 5-Feb-03, to lugnet.technic)
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| | | | | | | Re: flying helicopter? (was: orrery update) —Paul Kleniewski
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| | | | | | | "Ross Crawford" <rcrawford@csi.com> wrote in message news:H9tAp0.A1n@lugnet.com... (...) challenge 8?) i'm working on it i developed new fixed 3 blade rotor in a week or two i should be prepared to show you the results of my work regards pixel (21 years ago, 5-Feb-03, to lugnet.technic)
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| | | | | | | Re: flying helicopter? (was: orrery update) —Steven Lane
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| | | | | | (...) That's not actually right. The chinook has a shaft connecting the rotors keeping them in sync. It has to have one as rotor blades are very flexible. Otherwise their would be a danger of the front rotors bending upwards and hitting the rear (...) (21 years ago, 5-Feb-03, to lugnet.technic)
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| | | | | | Re: flying helicopter? (was: orrery update) —Luis Hernández
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| | | | (...) Or why not using this setup? (URL) then click in "General Layouts" It also uses 2 counter-rotating rotors as the Chinook , but very close one to another Luis (comments, instructions, death threats, etc. please remove all the X's) (21 years ago, 5-Feb-03, to lugnet.technic)
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| | | | | | Re: flying helicopter? (was: orrery update) —Tim Courtney
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| | | | | (...) Hi Luis - Checked out that page, and the experimental helicopter you have shown seems like an impossible setup. How do the two rotors, the way they are mounted, keep from chopping each other's drive shaft to bits? Even if they're at different (...) (21 years ago, 5-Feb-03, to lugnet.technic)
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| | | | | | | Re: flying helicopter? (was: orrery update) —Thomas Avery
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| | | | | | | (...) The shafts of the rotors are angled outwards. Look at the pictures on the general layout page. There's one of the machine looking from the front- you'll notice the shafts are angled. TJ (21 years ago, 5-Feb-03, to lugnet.technic)
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| | | | | | | | | Re: flying helicopter? (was: orrery update) —Tim Courtney
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| | | | | | | | (...) Ohh, thanks! Now I see it. I didn't notice the rotors themselves were tilted, I just thought that was the style of the covering around the shaft. I think now I've caught the bug -- I wanna build a Technic helicopter too! But alas, I don't have (...) (21 years ago, 5-Feb-03, to lugnet.technic)
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| | | | | | | | | | Re: flying helicopter? (was: orrery update) —Paul Krieg
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| | | | | | | | (...) I am working on a couter rotating design using axels and a non lego covering as rotor blades. I don't think it's cheating if the "works" are solidly lego based. Paul (21 years ago, 6-Feb-03, to lugnet.technic)
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| | | | | | | Re: flying helicopter? (was: orrery update) —Fredrik Glöckner
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| | | | | | (...) There's a small angle between the two rotor shafts, that's the solution. A clever one, indeed. Fredrik (21 years ago, 5-Feb-03, to lugnet.technic)
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| | | | | | | | Re: flying helicopter? (was: orrery update) —Pedro Silva
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| | | | | | (...) There is a military helicopter with this shaft arrangement in the Russian armed forces. IIRC, the Kirov carrier had some of these choppers at some point in time. Pedro (21 years ago, 5-Feb-03, to lugnet.technic)
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| | | | | | Re: flying helicopter? (was: orrery update) —Tobbe Arnesson
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| | | | (...) I don't agree that the last layout would be impossible in LEGO, it's just hard to achieve. I won't prove you wrong though but the photo clearly show the controls for the swash plate goes on the outside and that must be possible with LEGO as (...) (21 years ago, 6-Feb-03, to lugnet.technic)
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