Crea sito

The Diorama
Home Retour - Back - Ritorno Le Blanc-Argent - Page française The Blanc-Argent - English Home Page Il Blanc-Argent - Pagina italiana

 

Ecrivez-moi/Write to me/Scrivetemi :

Liens/Links


Specifications

The idea is simple: to get a compact, light and strong diorama.

  • compact because it needs to be stored under a bed without problem. In our case, the height constraint is fixed at 20.5 cm. The other dimensions are ‘standard’, 120 x 60 cm. The roadbed’s height is at 9.5 cm to obtain enough clearance for scenery items, and is based on commercial dimensions for pine girders.

  • Light, to allow easy transport (exhibitions) and facilitate installation. Given it must spend most of its time under a bed, the set-up and storage operations must be easy; too much weight would remove much pleasure to the game. To lighten benchwork as much as possible, the base will be made of 2 cm-foam board (the one used for isolation and sold in most hardware stores).

  • strong, because frequent assemblies and disassemblies must not hinder the structure integrity. The frame will be made of 9.5 x 2 cm-pine girders on three sides. The fourth (back) side will be made of 14 mm-plywood. It will be 19.5 cm high and will serve as a support base for the backdrop.

It will be a portable diorama, so its shape will be that of a suitcase. It will have a two-fold cover, one fold for the backdrop, the other for a sort of ceiling, as well as a support for halogen lighting. A 14 mm-plywood board, placed on the front of the diorama, can pivot on hinges to allow to open it. It will also have handles for easy transport.

A little picture is worth more than a long speech. This is the open diorama. It will have four feet that are not represented on the picture.

This is the closed diorama (except the handles).

The two parts of the cover have been folded, the front board has pivoted to close the case and two plywood boards close the sides. The three boards are secured with butterfly nuts.

The staging yard

The diorama is wide enough to build a BA station, obviously allowing for selective compression, but cannot provide with great operation possibilities. I plan to add a staging yard, made of two side modules and one back module. The back module will be the actual staging yard, where all trains will originate and end, while the side modules will close the loop. It will look like that:

With this 180 x 110 cm structure, it will be possible to carry a fairly good number of switching operations and to vary the show with trains prepared on the staging yard hidden by the cover used as a backdrop.

 

With this 180 x 110 cm structure, it will be possible to carry a fairly good number of switching operations and to vary the show with trains prepared on the staging yard hidden by the cover used as a backdrop.

Track Plan
This is the moment to present the track plan:

The station is composed of a through track (1), a passing siding (2) and a freight siding (3), as well as two engine tracks with a shed (4), served by three small turntables.

The staging yard is composed of three tracks to prepare the trains.

The curve radii of the tracks that lead to staging (6 and 7) are fairly tight (330 mm), especially if compared to the real curves. They are, alas, indispensable to maintain the overall size to an acceptable level. To mitigate the negative effect of those curves, I plan to hide the track behind some trees or structures.

Storage

I have said before that the layout needs to be stored under a bed.

This is done by separating the modules like this:

Then you just have to fold up the backdrop to close the station module. The two board that close the station sides have not been represented, but will be present in reality.

The two side modules, placed side by side, are closed by a cover and two boards, that have a double function: secure the two modules and close the volume.

The staging yard module as well will be closed in a similar way with a cover and two boards.