Saturday, 17 August 2013

WAGR Relay Cabin

WAGR Relay Cabin


The prototype of this relay cabin was installed in the 1950's along the WAGR South-West main line at a number of stations between Armadale and Coolup, in conjunction with the introduction of Centralised Traffic Control (CTC).  The relay cabins housed signalling relays and associated equipment, as well as telemetry equipment to allow the signalling to be remotely controlled from Perth station initially (later MidSig).


Some of the stations where these relay cabins were installed include Mundijong and Mundijong Junction, Serpentine, Keysbrook and Pinjarra.  Several of the relay cabins are still in use and largely unchanged, apart from replacement of the original corrugated asbestos roofing with iron in the early 2000's.

The 3D-printed model measures 71 mm long x 45 mm wide (not included the roof overhang) and 55 mm high above ground level.  The model includes an extra 5 mm deep "foundation" when can be recessed into the layout scenery to allow for slight undulations in the ground surface.

The model is printed in one piece and is complete apart from painting and installation of "windows" (not included).  Removal of the support materials (pictured at left) are also required.

This model is printed by i.Materialise in their Prime Gray material, but will not be available for sale from the i.Materialise Gallery.  Contact Marbelup Models for availability.  The prices is approx. $90 subject to exchange rate variations.


Tuesday, 13 August 2013

WAGR R Class Diesel

Photo of assembled model with added details, painting and decals.

Here you will find information of the 3D Printed parts designed by Marbelup Models which will allow a model railway enthusiast to build their own model of a WAGR R class diesel in Sn3½ scale (i.e. 1/64 scale, 16.5 mm gauge).

Marbelup Models has also developed 3D-printed model of the RA class diesel.  The RA is about 16 mm (in S scale) longer than the R class.  The short hood is longer, as is the narrow section of the long hood immediately behind the cab.  The fuel tank is also longer, and the RA does not have the dynamic brake grilles in the end and top of the long hood.  The RA also has different headlights, with the twin lights being mounted side by side rather than vertically.

All of the major parts for the R class have been designed to be produced as 3D printed plastic parts, including:
  • Loco Body - $180*
  • Chassis - $95*
  • Bogies - $50 per pair*
  • Fuel Tank - $35*
Total cost for above 3D-printed parts - $360*

* Costs are subject to exchange rate variations between AU$ and Euro.

The 3D printed parts have been designed based on plans and photographs of the R class locomotives "as delivered" in 1968.  As with many locomotives, various modifications were carried out over their life.

In addition to the 3D-printed parts, the modeller must obtain a number of other parts in order to complete the locomotive.  Please refer to the Assembly Tips for a list of the parts required, and helpful tips.