Lego and model railroads, parts ID please

[W124Bob]

Came across this and want to replicate it, but can anyone help with the Lego parts to be more specific than "gear reducer". I dont really need any more than is shown.
https://youtu.be/Z_uJ9tmEdVk
https://youtu.be/ArUu6HEl28k

[horacethefrog]

Bricklink is your friend - here And clicking on the item number will list the suppliers who have that part.

[W124Bob]

Cheers, bookmarked.

[djdest]

For the door mechanism I can see the following

Worm gear
https://www.bricklink.com/v2/catalog/catalogitem.p...

Gear rack
https://www.bricklink.com/v2/catalog/catalogitem.p...

16 tooth gear
https://www.bricklink.com/v2/catalog/catalogitem.p...

Thin lift arm triangle
http://www.bricklink.com/v2/catalog/catalogitem.pa...

3L axle, used for the 16 tooth wheel and to hold the whole thing together. (They are red ones in the video)
http://www.bricklink.com/v2/catalog/catalogitem.pa...

Axle and pin connector
http://www.bricklink.com/v2/catalog/catalogitem.pa...

2x4 brick
http://www.bricklink.com/v2/catalog/catalogitem.pa...

The axles used for the worm gear to handle on the roof are obviously length dependant on how tall the building is, just search for axles and you should find different ones.
Edit: the one in the 2nd video is pretty much the same, just used the other way around

Edited by djdest on Monday 27th February 11:26