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THIS IS THE TEST SITE OF EUROBRICKS! ×
THIS IS THE TEST SITE OF EUROBRICKS!

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Posted

Hi

I'm kind of new here, but this competition was too fun to pass up. The Lego town model railroad club has set up their winter landscape layout in the Winter Village.

modeltrain1.JPG

The layout features a snow-covered mountain, a cozy red house with chimney, and a couple of trees, including one decorated for the season. Here a father and his daughter are admiring the layout from the poinsettia-decorated viewing platform.

modeltrain2.JPG

The operator sits at his control board and makes sure the train runs on time. There is a little locomotive, a yellow tanker car, and a red box car.

Naturally, the train really runs, by clockwork mechanism! Here it is in action, I'll try to make a better gif (minus hand) later:

modeltrain3.gif

Please check out my other competition entry (also clockwork-powered!), over in the Technic Forum.

Posted

Thanks everyone for your kind words! I took another shot to show the mechanism a little better:

modeltrain4.JPG

Finding a combination of gears that provided a "wandering" path while keeping the tread links at a reasonable tension was a bit of a challenge, but this geometry worked well. The train is supported by 1x4 tiles, which fit sniggly over the 3 wide treads, the posts in the bottom of the tile fit into the holes in the tread.

Lego has produced a number of clockwork motors over the years, this one I picked up on Bricklink, and is from set 4093.

Posted

Thanks for sharing all the details majorna it is a real feat you got this working in such a small space. I really have to get me one of those clockwork motors to tweak with.

I forgot to mention it in my prior post but the operator is pure brilliance. It gives it a real "proud owner" vibe, just like the people showing of their MOCs and stuff on brick conventions.

  • 3 weeks later...
  • 3 weeks later...
Posted

I got some requests to show the mechanism that makes the train run in more detail, so here are a couple screenshots of a quick LDD drawing of the model:wintervillagemodeltrainmech.jpg

The "motor" (from set 4093) gets placed on the purple plate and feeds the 12t double bevel gear, which in turn feeds the 20 t bevel gear attached by a 4l axle to a 40 tooth gear. The other gears are held in place on the frame by pins, and the frame itself is set on jumper plates supported by ordinary bricks. The train is built to fit on a 4l tile (the orange round 1x plate is not necessary in reality) and these are then placed over the 3 wide treads (available, for instance, in the 9391 Tracked Crane set). I couldn't find these treads in LDD, but they will get linked together snuggly around the four cogs. I hope this is of assistance!

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