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Author Topic: Peco KNR-167 Tank Wagons  (Read 429 times)

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Offline maridunian

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Peco KNR-167 Tank Wagons
« on: August 12, 2016, 11:59:06 am »
The Peco KNR-167 Tank Wagon Kit is, IMHO, the best of the range, straightforwardly making up into an interesting and relatively accurate model, for about 4 a pop!

Here's an exploded view from Peter's Spares. So long as you remember to put the diagonal braces in place on the frame before you clip the assembled tank on, you can't really go wrong.

It's described as a 14T tank, but that would depend on what you put in it! Here's a representative prototype which held 4091 gallons.

Now 4091 gallons of tar is heavier than 4091 gallons of fuel oil, which is heavier than diesel oil, which is heavier than petrol, which is heavier than paraffin (kerosene), etc. so the tank sizes of 14T tank wagons varied somewhat.

You can read lots of useful information about the evolution of tank wagons at http://myweb.tiscali.co.uk/gansg/4-rstock/5-tank.htm and Paul Bartlett has photographs of many examples on his excellent site. If you'd like to delve deeper into the story of tank wagons, look out for "Petroleum Rail Tank Wagons of Britain" by Richard Tourret and "Oil on the Rails" by Alan Coppin.

Anyway, back to the kit. Here's one completed next to a ready-to-run example, which I detailed based on a preserved example (Severn Valley, I think).



The model is quite heavily rivetted, and if you're working with the kit, you can keep or remove these as your prototype demands. These tanks were often assembled from three rectangular panels rolled into hoops, originally rivetted, but later welded together, with dished ends. Viewed from the end of the wagon the horizontal seams were arranged alternately at ~10 O'clock and ~2 O'clock. The kit (and RTR models, if you're careful..) can be improved by filing off the central horizontal seam on one side, and the two outer horizontal seams on the other. I've done this on the left hand example above. Incidentally, the Farish models get this wrong too, with identical  seams on both sides.

This model is based on a 1927 Railway Clearing House design. Their previous standard tank design had a large central turret for the filler, and the tank was secured to the chassis with diagonal steel hawsers, anchored close to the outer ends of the W-plates.

Here are a couple of examples of the latter I built, one from the kit and the other by judicious surgery and touching up of the Shell-BP RTR model, the turrets being filed from scrap sprue. The hawsers are loops of painted cotton, fed down through the wheel holes and superglued to either side of the coupling pocket.



Going one step further, you can easily model a Victorian-era wagon similar to this example by adding a fatter turret, substituting a "wooden" chassis and spoked wheels:



Most tank wagons were (and remain) privately owned, so there are many potential liveries. Robbie Burns has a very wide range of decals available, as well as the larger suppliers such as Fox or Modelmaster.

If you only ever build one wagon kit, this is the one - enjoy!

Mike
« Last Edit: August 12, 2016, 04:10:13 pm by maridunian »

 

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