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Author Topic: NGS Kit 78 - BR 40t Girder Wagon XXO/GIRDER WG  (Read 101 times)

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Offline montyburns1982

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NGS Kit 78 - BR 40t Girder Wagon XXO/GIRDER WG
« on: August 06, 2020, 09:53:23 AM »
As NGS members will have seen from the latest journal, we are currently developing a new kit, which is the Diagram 2/150 BR 40t Girder Wagon.

As a ‘common carrier’ until the early 1960s the railway was obliged to move large or unusual loads, resulting in the development of a plethora of purpose built vehicles. Any items larger than about fifty foot long or over eight feet wide were classed as 'special traffic' because of the danger they might foul stock on adjacent tracks when in transit. The transporation of such items was rare in practice and such loads would usually be worked through the system during a low traffic period, usually over a weekend. Anything wider than about eight foot presented a logistical problem in traffic; laid flat it would be likely to foul stock on adjacent tracks and line side equipment, on end it would foul bridges.
For larger heavy items such as iron or steel beams and girders, the railway companies built various sets of heavily built wagons with a total length of up to fifty foot. These could be separated into individual wagons and used to transport large loads. They were informally called 'boiler trucks' by the railways but different companies had different telegraphic codes (the GWR gave them the telegraphic name ‘Pollen’ whilst BR designated them GIRWAG for example).
British Railways built four pairs of smaller two-axle wagons at Swindon in 1959 and 1961, to Diagram 2/150 with a maximum GLW of 40 tons. The wagons are very similar to the GWR ‘Pollen C’ wagons built in 1905/06, unsurprising given the Swindon wagon design lineage! The wagons ran coupled together in fixed pairs when unloaded, coupled together via a bar between the inner ends of the vehicles. They were built unfitted (handbrake only) and remained so for their entire working lives.
The Girder WG wagons were used all over the network, and could be found carrying girders, large pieces of specialist steel or iron (bridge or crane girders), large pre-cast concrete sections (such as bridge sections) or other unusual loads such as splitter columns for the production of chemicals.
The wagons lasted in traffic until the early 1980s, by which time much of the ‘special traffic’ for which they had been built was in decline.
 
There are few pictures of the wagons in traffic, but here are a selection:

https://www.flickr.com/photos/blue-diesels/3867650530/in/album-72157621872497263/
https://www.flickr.com/photos/blue-diesels/3866865873/in/album-72157621872497263/
https://www.flickr.com/photos/mrc31176/4383312072
https://www.flickr.com/photos/95062750@N04/11487083346/

Kit development is now well under way, with 3D printed prototypes being printed for testing etc. You can see a few early test videos here, showing the (laden) wagons negotiating pointwork. Also, a single video showing the unladen wagons. The next stage is to see how unladen wagons perform across complex pointwork, for which we need metal floors for weight (in production).








I've also produced a sample formations guide. This is based on the original BR load drawings and some of the photographs linked above. It covers the period from the early 1960s until 1980 ish. The guide is attached to this post.

A single load will come in the kit, and other loads will be available seperately. My intention is to design loads of carying sizes and lengths so as to accomodate all types of layout. The kit will also feature etched tie down ratchets and finelink chain to secure the load. The buffers and drawhooks will be turned/cast brass. The wagon will have NEM pockets and some sort of internal coupler for running unloaded (still under development).

Here's an early test build (forgive my ham fisted attempts at securing chains)



There will be a further update in the next NGS journal.

It is intended to issue the kit in Q4 2020, production and development permitting.

thanks

Richard (NGS Product Development Officer)


Offline honestjudge

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Re: NGS Kit 78 - BR 40t Girder Wagon XXO/GIRDER WG
« Reply #1 on: August 06, 2020, 01:39:21 PM »
That is looking very good

 

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