Flying Tourbillon Model III

by A26, published

Flying Tourbillon Model III by A26 Dec 29, 2016


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I was dissatisfied with Model II, so here is a better example for #teamplanetary. It uses the same basic mechanics but offset to the side for a more compact, albeit taller overall package. Another difference from the previous two efforts is that this is a 20 second tourbillon rather than a 60 second version. This means that this model actually meets my original goal of being ID tag powered. I do not think this one is as accurate as version 1 (depicted above) due to the tourbillon cage not being perfectly balanced. Even so, it still ticks merrily away for just under a minute limited by the length of my ID tag chain.

frameb and the base require supports. 2mm pins hold the frames together and I added some PVA glue to help them out.

See it in action: https://www.youtube.com/watch?v=xE57NHKSKj8&feature=youtu.be

non-printed parts:
2 x 6x2.5x3 RC Helicopter ball bearings
2 x 25mm long 2mm shafts (escape and
2 x 16mm long 2mm shafts (frame pins)
1 x 19mm long 2mm shaft
1 x 6mm long 2mm shaft
1 x 40mm long 3mm shaft
1 x #3 ball chain + ID tags or coins

Here are links for the non-printed components I used. Anything comparable will do.
bearings: https://www.amazon.com/Sixteen-MR63-3x6x2mm-Precision-Bearings/dp/B01M0VV96I/ref=sr_1_2?ie=UTF8&qid=1483062996&sr=8-2&keywords=3mm+id+ball+bearing
3mm rods: https://www.amazon.com/10Pcs-Stainless-Steel-Cylinder-Linear/dp/B00JR56KI0/ref=sr_1_1?rps=1&ie=UTF8&qid=1483063060&sr=8-1&keywords=3mm+shaft&refinements=p_85%3A2470955011
2mm rods: https://www.amazon.com/20Pcs-Stainless-Steel-Round-150mmx2mm/dp/B00KHUR5AQ/ref=sr_1_1?rps=1&ie=UTF8&qid=1483063100&sr=8-1&keywords=2mm+shaft&refinements=p_85%3A2470955011
inspiration: https://www.bulleit.com/whiskeys/bulleit-rye/

Print Settings


Reach 3D










printed on Hatchbox blue PLA at 195/60 at 40mm/s. total print time 3:23.

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Hello Ed B, thank you for your prompt reply, i had printed all parts today twice but it still can not move , seems the gear is locked.. may i know if there is any part that missed in the model or anything i assembled not correct?

It looks like all the parts went together correctly. I cannot say exactly what is causing the issue. There are many moving parts in this design that require a 150 micron tolerance if I remember correctly. Any part is capable of stopping the entire mechanism. You can verify everything spins freely by assembling with the escape wheel, fork, and balance separately. Each of these three components must spin very easily for the entire mechanism to operate.

From your pictures:

  • seventh picture: the escape wheel appears to have some artifacts on the teeth. I recommend sanding them off.
  • seventh picture: where the roller "jewel" slots into the fork looks a little tight. If that is the case, try sanding it down.
  • fifth picture: holding the tourbillon by the main drive shaft will prevent it from turning.
  • third picture: left over support material underneath the fixed gear may be interfering with the tourbillon frame as it spins.
  • second picture: make sure the ball bearings are aligned

In the end, watch parts via FDM printing are always going to be very finicky and require adjustment. I spend almost as much time sanding and reaming holes as I did printing to get the working model in the photographs. Good luck.

Hello Ed B, thank you for sharing your fantastic masterpiece, may i know which part should i install the bearing please?

Glad that you enjoy the design. The ball bearings press-fit into the top and bottom at the center of "base.stl."

I made one of these and wrote up some commentary in a blog post at http://moosteria.blogspot.com/2017/07/3d-printed-tourbillon.html. I also made a version which used plastic shafts instead of steel, for those days when getting the Dremel out is just too much effort.

Can you send the instructions for it, how to assemble because it does not work for me. :C