Saturday 7 March 2020

Wrightscale WD or Péchot kits



Our model kits include Welsh narrow gauge items, the Péchot wagon and British War Department bogies.
Wrightscale 16mm Péchot wagon detail
You may be wondering which to choose from these apparently disparate items. The designs are all connected, but before you buy, you may like to know the 'why?' and 'wherefore?' of each.
As we British are proud to relate, we were pioneers in railway development. The Welsh corner of Britain was particularly inventive, especially in narrow gauge. It was a combination of geology and ingenuity. Northern Wales has an abundance of slate, known for millennia as a good roofing material. What was produced in Wales had to stay in Wales until it could be exported and narrow gauge railways provided the missing link between the slate and the ports.
Detail of 16mm WD class D wagon on Wrightscale bogies
The Talyllyn, Corris and Festiniog railways were born this way, firstly with horse-drawn freight and then with locomotives. The Festiniog developed the well-loved Fairlie locomotive which pulled four-wheeled slate wagons down to Portmadog.
Wales had lessons for the French. They had compartmentalised ideas about railways. There were the ‘serious’ gauges – standard gauge and one metre – and light ones – very narrow gauges of 60 cm and less. From the mid-eighteen seventies, the Decauville company sold portable track in 40 and 50cm gauges. In the early eighteen eighties, they introduced a portable ‘military’ gauge but this tested the technology to the limit and was less than successful.
Four ton wagon typical of the narrow gauge freight wagons before the Péchot revolution. Photo courtesy MD Wright
Along came Prosper Péchot and combined the best of Welsh and Decauville then infused a spark of personal genius. He produced a sturdy portable system on which could run rugged and adaptable ten tonne bogie wagons. A significant number have survived to this day. Revolutionary features included: 60cm gauge; bogie-mounted wagons 6m by 1.7m (about 20’ by 5’8”); low centre of gravity for a wagon with a central well; adaptability ensured by stanchions; bogies which had compensatory as well as vertical springing; coupling attached to the bogies rather than to the wagon body; brake could be applied to every bogie wheel; a prominent brake-wheel at each end; ten tonne wagons with capacity for 8 tonnes of freight.
His design was copied and adapted; by 1918, there were thousands of kilometres of track on which ran tens of thousands of ten tonne bogie wagons. The bulk of this material was sold off as War surplus – some track, wagons and locomotives returning to the land where it all began, Wales.
Ten tonne bogie wagon of 1895 after the Péchot revolution. It still has the traditional couplings,  attached tothe wagon body. Drawing by Victor Rose. Courtesy MD Wright
Malcolm has celebrated the Péchot designs, both the originals and important adaptations.

Even while the French military were experimenting with Péchot designs, the German Army were looking on. By early 1888, they were beginning to produce their own versions. They moved from 72 and 75cm gauge to 60cm, from four wheeled wagons to ten tone bogie wagons and from horse drawn to locomotive haulage. Yes, German engineers and their ‘Pioneer’ railway troops were among the best for the time.
But no, they were quite capable of industrial espionage. Paul Decauville caught them at it, as he explained to the French Government. In 1907, when the sugar-works at Cramaille took delivery of a 60cm gauge railway by Aubineau, they were soon visited by ‘technicians’ from Orenstein and Koppel. In no time at all, O&K were selling suspiciously similar 60cm wagons. Eric Fresné goes so far to say ‘the O&K wagons were ‘furiously inspired’ by the Aubineau ones’. (’70 years de chemins de fer betteraviers’ p 113)
The German adapted the pirated design to produce their own Brigadewagen (military wagon). Although the important features were retained – 6m approx by 1.7, bogie mounted, brake to every bogie-wheel, coupling through sprung bogies, 8 tonne capacity etc, they made changes.  The bogies were lighter and the wagon body was a comparatively simple framework with wood instead of steel plate. The wagon bodies did not have the well and were more easily adapted than the all-steel Péchot design. For the standard Brigadewagen, the idea of stanchions was retained, though they were usually seen attached to wooden sides. The bogie couplings also provided the springing – an arrangement which was both economical and effective. Overall, they were cheaper to make. The bogies projected a generous 50cm beyond the wagon body, making the life of the Bremser (brakesman) safer and more comfortable.
Brigadewagen on a slope. Line drawing courtesy Eric Fresné
By the time the First World War started, the Germans had a considerable stock of material. The French had a couple of hundred Péchot wagons (modèle artillerie 88) which had been in service since 1888. Once the Western Front was established and hundreds of miles of trench had to be supplied, the French realised their need for more wagons. Most of what they ordered was of a lighter pattern, reminiscent of the Brigadewagen as well as the artillerie 88. It was known as the Decauville 15.
By 1916, the British, though initially sceptical, began to admit that 60cm had advantages. They produced their own War Department design, but with similar features to the Péchot design. This was produced to metric rather than Imperial scale. Can you imagine what torment this would have been to the Eurosceptics of the time! Rather than sticking to a standard shape, they produced a number of wagon bodies. The Classes E and F had a well, useful for transporting bulky loads.
When the USA joined the War, they immediately designed their own military narrow gauge system, known as Pershing. Another nation of Imperial measurement, they too were forced to bow to the Péchot design. Their locomotives and rolling-stock ran on 60cm gauge. The Pershing was a bogie wagon. Each bogie was fitted with brakes and a brakewheel. The couplings were to the bogie not the wagon body.
16mm model of WD class D wagon on Wrightscale bogies

These later designs were all more prolific than the Péchot original but there was a catch. Although there were thousands of examples of these alternative designs, they did not have the sheer staying power of the artillerie 88. When World War One ended, the Germans had to hand over most of their 60cm gauge material. This and Allied material were used as temporary railways to restore and rebuild the ruins of the Western Front. Afterwards, they were sold off. In France, agricultural systems such as for sugar-beet were the main beneficiaries. English and Welsh quarries also bought surplus stock. Thus the grand-children of the original designs came home to Wales. Being of wood and light steel construction they had a short life. There are few photos, and these show them in a very poor state.
WD wagon photographed in the 1980s Photo courtesy J. Hawkesworth
Eric Fresné is not a fan of the Péchot design which he describes as ‘a veritable monster, heavy and over-engineered’. (Betteraviers page 114). Without appreciating the contradiction, he goes on (page 115) to say ‘the Army took great care to return the Péchot wagons to their bases and depots once the job of (post-war) reconstruction was over’ These ‘monsters’ are now beginning to reappear to great acclaim and can be seen at preserved railways in the UK and France. Though few in number, those Péchot wagons just keep rolling along.
Péchot wagon 2015, minus stanchions but still going strong. MD Wright
Sources: ‘Colonel Péchot: Tracks To The Trenches’ Sarah Wright
‘Chemins de fre betteraviers’ Eric Fresné  A French language treasure trove
‘La Voie de 60’ Dr Christian Cénac 

No comments:

Post a Comment