Subject:
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Re: Lego orrery (mechanical solar system)
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Newsgroups:
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lugnet.technic
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Date:
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Tue, 29 Apr 2003 19:18:10 GMT
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Viewed:
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3273 times
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In lugnet.technic, Paul Kleniewski writes:
> groovy
> good job
>
> i like the earth
>
> maybe you could try to use one of the lego clock hands mechanisms
> you know the coaxial mechanism
> to hide the moon gearing under the earth globe
>
> sorry I'm advicing but that is because your moc inspires me much
Apologies are not necessary--I agree that the moon mechanism is unsightly
and I am looking for
ways to clean it up for the nine planet version. Unfortunately (for orrery
makers) the moon's orbit
and earth's axis of rotation are not coaxial.
That said, here is an orrery made by Don Rogerson that uses that a
differential housing for a
coaxial mechanism:
http://www.donrogerson.com/bricks/orrery.html
His geartrain is amazingly correct.
Another orrery about which I have no information can be found here:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=5670
With my nine planet version, I'm trying to find the right balance between
clarity and "correctness".
"Correctness" includes such things as elliptical orbits, proper periods,
multiple moons for Jupiter,
Pluto's out-of-plane orbit , etc. The list is endless and it is just a
matter of drawing the line.
Tom
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Message has 1 Reply:
 | | Re: Lego orrery (mechanical solar system)
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| "Thomas Johnson" <aklego@mac.com> wrote in message news:HE4DMA.1Eqy@lugnet.com... (...) cause i said something without any knowledge about the current state of the orrery i missed that the moon's orbit's not coaxial with the earth's one but as i (...) (22 years ago, 30-Apr-03, to lugnet.technic)
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Message is in Reply To:
| | Re: Lego orrery (mechanical solar system)
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| groovy good job i like the earth maybe you could try to use one of the lego clock hands mechanisms you know the coaxial mechanism to hide the moon gearing under the earth globe sorry i'm advicing but that is because your moc inspires me much br (...) (22 years ago, 29-Apr-03, to lugnet.technic)
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