Rhaetian Railways steam engine G 4/5 No. 108 by Ursin471

About Rhaetian Railways steam engine G 4/5 No. 108 by Ursin471

This is my model of the most powerful narrow gauge steam locomotive in Switzerland, the G 4/5 No. 108 of the RhB "Rhaetian Railways". The model is built exactly in 1:42 scale, and consists of 840 parts.
The locomotive is designed for LEGO narrow gauge tracks. Because of the only 2 studs wide inner frame, the relatively thin boiler and the very short tender, it was not possible to install a reasonable drive. In order not to have to make any big compromises with the appearance, I decided to put the drive in a passenger coach. See the picture with the blue-cream Pullman coach, which is equipped with 2 old 9V mini motors, IR and battery box.
The driving wheels and the wheels for the tender are from BigBenBricks. The wheels for the front bogie, the driving rods and the coupling rods are from Bricks-on-Rails.
To make the wheels and coupling rods run along nicely, one set of driving wheels is equipped with rubber rings.
The boiler is 3 studs and 4 plates thick. The supporting construction consists of headlight bricks 4070 and bricks modified e.g. 30414, arranged in a circle. This practically fills the boiler.
The handrails and pipes on the boiler were recreated with rigid hoses and antennas, that had to be cutted to the correct length.
Also the 2 holders at the front were recreated with antennas, which were plugged into 2 short pieces of rigid hoses.
On the driver's cab 2 black helmet visors were used, which had to be glued on. Gluing parts is very unpopular, but the 2 visors fit absolutely well.
The running board is only attached to a few studs and is very fragile. The locomotive should therefore be held by the boiler.
The locomotive runs on narrow gauge tracks on R72 curves without any problems. Smaller curves could not be tested. The situation that the locomotive always has to be pushed by the motorised wagon is absolutely problem-free. The locomotive never derailed even during longer operation at an exhibition.

Enjoy my model!
More photos on flickr: https://www.flickr.com/photos/156261280@N02/albums/72177720310959011