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The Solar System
A working orrery of the Solar System, with all eight planets (sorry Pluto) orbiting the rotating Sun at about the correct relative rates.
About this creation

From left to right; Neptune, Saturn, Earth, Mercury, Venus and Mars. Jupiter's in front, Uranus is hiding from embarrassment probably.



A single XL motor sends drive downwards through the system with gearing between the turntables. Gearing is such that the orbit times are about 95% accurate relative to the Sun's rotation.

A video of it working



No complications here. None at all.



By the time drive reaches Neptune's turntable it's very very slow but it does move. Those counterweights are vital or it would fall over. There's a single fixed axle through the centre holding all this together.





The batteries are placed to act as a counterweight for the main structure.



Saturn! Quite pleased with this simple ring solution. Gotta keep it light.



The Sun can be heavy as I like, within reason. Neptune is bigger than Venus, it's just much further away...



It can be left running for extended periods. Until the motor gets hot anyway... That's why I've made the motor simple to change.



This was a fun challenge. Thanks for looking.



Comments

 I like it 
  February 9, 2019
SIMPLY AMAZING! the thought and effort that went into this is remarkable
 I like it 
  January 23, 2019
This is fantastic. Saturn's rings are spectacular!
 I made it 
  November 19, 2018
Quoting Marc dZ 'And, still, it turns..." ^^ Stunning work, Nick!! BTW, where is the Kuiper Belt?... OK, I'm out.
It's keeping Kuiper's trousers up. I'll see myself out ;-)
 I like it 
  November 19, 2018
'And, still, it turns..." ^^ Stunning work, Nick!! BTW, where is the Kuiper Belt?... OK, I'm out.
 I like it 
  November 7, 2018
LMAO - Maniacal build bud ;)
 I like it 
  November 4, 2018
Very nice. I like it.
 I like it 
  October 31, 2018
Nice!
 I made it 
  October 29, 2018
Quoting Jeremy McCreary Could you clarify the statement about the "single fixed axle" tying the stack of transmissions together? Fixed to the base? The driven central axle above the sun clearly isn't fixed, so where does it end relative to the fixed axle?
If you look at the second to last photo, you'll see that the upper frame is joined to L-shaped liftarms that curve under the Sun. The bottom of these is attached to the fixed axle that comes through the turntables all the way from the base. The driven axle is opposite it, and neither is central.
 I like it 
  October 29, 2018
Could you clarify the statement about the "single fixed axle" tying the stack of transmissions together? Fixed to the base? The driven central axle above the sun clearly isn't fixed, so where does it end relative to the fixed axle?
 I like it 
  October 29, 2018
An engineering tour de force, Nick! Would love to see a video and much more of the gear train. In fact, one of the very best LEGO orreries I've seen -- and I've seen quite a few in researching my own attempts.
 I like it 
  October 29, 2018
Vey well made there. I can't vouch for the accuracy regarding speed but I love it. :))
 I like it 
  October 29, 2018
Positively brilliant! I love the ring around Saturn. Very clever.
 I like it 
  October 29, 2018
Just awesome. As I've written on flickr: My son would love it. Great job! :-))
Nick Barrett
 I like it 
matt rowntRee
  October 28, 2018
That gearing is a monstrous delight! Looks like you had the same issues I had with mine in the gearing limitations of Lego, but the relative orbits worked fine. If I remember right, mine were running about 3:1 per planet after the sun. Are yours about the same? Brilliant work, my friend! Always great to see an orrery pop up in my Lego feeds.
 I like it 
  October 28, 2018
the red spot on Mars should be more oval ... jokes aside, fantastic work :)
 I like it 
  October 28, 2018
True. Another funny thing is, you couldn’t have built for these specs, because we killed you. Hahahahaha.... sorry. Bad taste. On the bright side you were DAS so you got the satisfaction of NO-GOing people’s entries.
 I made it 
  October 28, 2018
Quoting DJ - Studios Fantastic craftsmanship, insane gearwork. Brings back memories of DA.
The funny thing is, this wouldn't be specs-accurate (no orbiting satellites). Good times!
 I made it 
  October 28, 2018
Quoting matt rowntRee That gearing is a monstrous delight! Looks like you had the same issues I had with mine in the gearing limitations of Lego, but the relative orbits worked fine. If I remember right, mine were running about 3:1 per planet after the sun. Are yours about the same? Brilliant work, my friend! Always great to see an orrery pop up in my Lego feeds.
The gearing after the Sun goes 3:1, 3:1, 1.5:1, 1.66:1, 5:1, 2.25:1, 3:1, 1.8:1. Cheers matt, glad you enjoyed re-living it! Yours was an inspiration.
  October 28, 2018
This is amazing! And you also had the orbits in correct relative sync. Amazing!
 I like it 
  October 28, 2018
Fantastic craftsmanship, insane gearwork. Brings back memories of DA.
 I like it 
  October 28, 2018
Wonderful! Nothing better than a little outer space meets 'expert set' to get the mind going. Nicely done!
 I like it 
  October 28, 2018
Epic build! :)
 I like it 
  October 28, 2018
Always fun to see people attempting this, and this one is probably bigger than all the rest. Great stuff.
 
By Nick Barrett
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LEGO models my own creation MOCpages toys shop The Solar System


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