Decauville 020T in gauge 1
by Julius de Waal

SOME time in 2009 I was surfing the internet looking for plans of small model locomotives and my eye fell upon this nice little live steam Decauville.

I also looked for some building instructions or any written words which explained the making of this little engine. However, I could not find any.

Also the plans were all in French, and my knowledge of the French language is very limited. However, when I looked at the plans and soon discovered that the person who drew these plans must have either used SolidWorks or Inventor drawing software.

Going through the plans I also discovered some errors and omissions. Some of the components were not drawn at all and some of the components were not dimensioned.

Also it was not very clear how some of the assemblies were put together and which components were related to one and other. Some of the parts are drawn so small that you can hardly see them.

The original plans were drawn on 46 A4 sheets. For those people who would like to see the original plans these can readily be found on the internet.

Me being me, and to give me something to do, I took up the challenge of redrawing it and hopefully make it clearer on my drawings how this engine is put together. My drawings are on 14 A3 sheets.

I did, however, try to keep myself to the same parts numbering as on the original plans, so it can make it easy for the builder to refer to the original plans if required.

A bill of materials can be found on drawing sheet 02.

To describe each and every part, in detail, of this engine would take up not only lots of space, it also takes up lots of time.

Since the building of this engine is more for the experienced engineer the choice of material is left to the builder.

Below you will find a list of French words which I have translated using Google translation.

Since I did not build this engine myself, I can not comment on the construction of it and the degree of difficulty.

However, I do not think that an experienced model engineer would have any difficulty making this nice little engine.

For those people who would like to see this engine in action, there are several short films on YouTube.

Whoever makes this engine I hope the builder has a lot of pleasure in making it and later after it finished a lot of pleasure playing with it!

Happy Modeling!

Above top: Decauville 020T on the chemin de Fer des Chanteraines, Villeneuve-la-Garenne.

Above: Another loco busy on the same railway.

Below: Same railway (Photo Claude Shishany).

Last photo: Barbouilleur at the Amberley Museum and Heritage Centre.

LAITON = BRASS
ACIER = STEEL
STUB = ROUND    
ACIER CLAVETTE = TOOL STEEL
CUIVRE = COPPER        
TOLE CUIVRE EP = COPPER PLATE    
INOX = INOX
LAITON HEXA = HEX BRASS    
VIS = SCREW    
TEFLON = TEFLON

CLICK ON DRAWINGS TO DOWNLOAD TO SEE UP TO FULL SIZE