Three planet orrery


Based on CSM 8, available at MWMO.

pic Original model

The modelplan was clear, although I have to admit, that the photo’s were very important to understand the construction of the model. I modified the model about the following:

  • the basement and all of it’s gearings is placed between 2 hub discs (118), held on their place by long screwed rods. This results in a round rigid box with a nice appearance
  • the centre axle is a hollow brass tube, providing the electric wiring for enlighting the sun. Due to this construction, the model is very fragile
  • the angle girders of the earth arm have been replaced by 2x2 flat strips in order to make the model as filigrane as possible
  • for the same reason the cage of the lunar orbit drive has been built up with screwed rods to enlarge the visibility of the lunar drive system (see picture at the bottom).
  • The small and large teethed brass gearrings were made by Mr. Piet Leemans, a well known member of the MGN (Meccano Gilde Nederland). Piet Leemans sadly passed away in 2017.

Visit my YouTube channel Meccano Kinematics to view the working of this model.