Live steam model on 7¼" gauge of the Württembergische T3 no 924

Welcome to this blog. It will inform you about the progress of designing and building miniature live steam, coal fired locomotives for passenger hauling. Currently I'm working on a 7¼" gauge, scale 1:8, German T3 steam locomotive.

In 2006 I started this new project. This is a small 0-6-0 branch line locomotive of the German KWStE (Königlich Württembergischen Staatseisenbahnen) origin with outside cylinders and Walschaerts valve gear. The loco is about 1.10 metre long and will weigh approx. 100 kg.

On the left you'll find the index where you can browse through the different articles and on the right you'll find all the extra's. On the top tabs you'll find a brief description of my other locos.

Enjoy this site. Erik-Jan Stroetinga. The Netherlands. Europe.

Wednesday, 13 February 2013

The Solidworks drawing

I started out with Inventor software for the 3D modelling of the loco. At my work at Fontys University of applied sciences, I have made to change to Solidworks because we got better support with this software. To get familiar with the 3D modelling CAD software, a 3 day starter course isn’t enough; so I had to get some hand-on experience myself.



What better way than to make your own drawings. Designing the locomotive in 3D is great to do. You’ll get an instant view and ‘feel’ of how things will look on the loco. In the assembly drawings, all the parts can be fitted and checked on the virtual locomotive.


Even the total weight of the loco can easily be determined. The valve gear can completely be tested in forehand; so when I start to cut metal in the workshop, I know the parts will fit. From every 3D modelled part a 2D workshop drawing can be made very quickly. A change in the 3D part will be automatically up-dated in the 2D drawing.

February 2014

The first concept drawing of the driving wagon. Based on an so called Omk open goods wagon of the German railways. The drawing is based on measurements I took off a gauge 1 Märkin wagon. This is a model a typical European open wagon with a 4 meter wheel base, 6.7m long loading floor with a 15 ton loading capacity. 

March  2015

May 2014

May 2017, render in Solidworks; final livery

Loco with the open wagon (for the driver to sit on)  and beer wagon. 

The Solidworks drawing can now be downloaded at GrabCad  or directly from our model engineering society site www.stoomgroepzuid.nl

Possible a next project?  A quick sketch of  a Stroudley Terrier in comparison with the T3.
The T3 is a small loco in 7¼"; the Terrier is even smaller. However much of the boiler parts are identical,  the driving wheels (158 mm) even bigger and  a longer wheelbase. (470 mm)
Nice loco; see here