Welcome

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 German (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.

Württembergische T3 on 7¼" gauge

The choice of the Model



The 7¼" model, as it was in May 2015 at Turnhout (Belgium) 
 (see for more info at the end of this page)



The works photo from the manufacturer. They were build at the locomotive works in Esslingen and Heilbronn for the Königlich Württembergische Staats Eisenbahn between 1891 and 1913.   

 110 examples in total were build, four of them are preserved. 

 The model, as it was during construction,  in 2015



The locomotive
This project started in august 2006 and will be published on this site as progress gets along. The locomotive is a German Württembergische T3 which I'm designing with the aid of  3D cad software.  I've bought a H0 model of the loco from Brawa. This H0 fine scale model, a book of the loco  and some photos of the preserved locos are the basis for this 7.25" design.
For this scale (1:8) it is a quite small loco, with the benefit that it can be handled in my workshop. A larger loco on 7.25" gauge would be too much for my small workshop. And in my opinion most model live steam tracks in the Netherlands have the size of a branch line rather than a main line. Although the small size of this loco there are several 7.25” versions of the Prussian T3 and they are all very good performers on the track. Prussian T3's are in main dimensions very similar to this Königlich Württembergischen Staatseisenbahnen (KWStE) version and, as in real live, these is also derived from the Prussian T3. Here you see the Prussian T3 of Thomas Adler on 7¼ gauge

The Prussian T3 of which the Württembergische design is derived.


The model with an overall length of just under 1.10 meter and a weight of around 100kg, should be able to do some work on a ground level track and it still can be transported in our family car.



The choice of the model

(Click on the small images to get a larger view)
It all started with the plan to build a small Stroudley Terrier A1 class 0-6-0 loco called New Port and designed by Don Young. A nice little engine on 7.25"gauge (184mm) as a next project after the 'Didcot'.
The wheel castings for this loco were (and still are)  however exceptional expensive at Reeves2000. Over 600,-- Euro for six wheels
, ex. postage & package.
I was talking about this with a German  model engineer, whom I'd met at the annual steam meeting in Den Haag ZuiderparkWolfgang told me he had some wheel castings,  drawings, cylinders, chimney and lots of other bits and pieces for a German 7.25" gauge  T3 (see this video)  he was not using any more.
An appointment was quickly made and within a few weeks I was the proud owner of a complete set of castings for 
7.25" gauge locomotive. The drawings and castings came from Live Steam Service.
      

This Prussian T3  is very nice loco indeed, but in a small book I read about a variation on this design, the so called Württembergische T3 (89 3-4). All the parts could be used, only a new drawing had to be made. This gave me the opportunity to incorporate some ideas from earlier experiences with previous model locomotives and to get some hands-on experience with 3D solid modelling software like Inventor and Solid works.





Foto by Harald Frank 

The  preserved Württemberigsche T3 930



Frame in Inventor 2006. The start of the locomotive

General view in Inventor


Switch to Solidworks 2007




Solidworks 2011


A very nice model in 0 gauge (1:45) by Fritz Müller.



           
I've started with the very good book of  "Die baureihe 89 3-4" by Werner Willhaus (EK-Verlag)
which include a few very clear drawings and plenty of photographs of the locomotive during is 
existence. The first was built in 1891 for the Königlich Württembergische Staatseisenbahnen 
(KWStE). Luckily  a few locos of this class are still preserved in Germany.



Testing the frame at the track of the SMMB in Tilburg march 2011

At the Voorjaarsstoomdag of  Stoomgroep Zuid in Loon op Zand,  March 2012  (photo by Eric Bruinewoud)
This is the annual model engineering exhibition of Stoomgroep Zuid, of which I'm a member.

At Stoomgroep Stormpolder on June 2012



One of the preserved Württembergische T3  no. 930 back in steam on september 2013

Photo by Harald Frank

To this loco in steam: click here


 
General arrangement in Solidworks,  June 2013



May 2015

The Solidworks drawing (as it is) can now be downloaded here at 


The T3 is standing at the station sidings. 
The locomotive is big in my workshop, but on the track is only diminutive.




Testing: the loco pulled along track; no problems with points and crossings.

March 2015, the Voorjaarsstoomdag in Loon op Zand, except for the lamps, safety valve and steps, not much change is to be seen. Most of the work in the last year was on the inside of the loco. Water tank connections, inner dome Stroudley regulator valve, non return valves etc. were made.

The loco with the first concept drawing of the driving wagon.



July 2016. Boiler cladding, domes and details.



The H0 and gauge 1 set




The loco with driving and tool wagons