The prototype for this kit is the LMS Hopper Coke Wagon to Drawing D1729 of which 200 were built (100 in 1930 and 100 in 1935). The BR 20T Standard Coke Hopper Wagon to Diagram 1/150 (1949-1950) was virtually identical.
Thereafter followed other BR versions. D-1/151 (1951-1957) was similar to early versions, but had no raves on the end. D-1/152 (1958) were produced as 2 variants, the second of which had an all welded body. The Calcined Coke conversions (from D-1/152) were also riveted construction with no raves, whereas the Sand Hoppers were cut down versions of D-1/150.
There is a wonderful reference from Model Railway Constructor, August 1983. "Freight wagons of British Railways - Part 3 - 20 Ton Standard Coke Hopper Wagons" by David Larkin and Trevor Mann.
There is a review of the 4mm kit by Tim Shackleton in Model Railway Journal No. 180, 2008 (pages 31-32) or read it now on-line by clicking this icon , but you must have Adobe Reader installed. Downloading this review will take about 3 minutes at broadband speeds. This review is presented here courtesy of the Model Railway Journal. Click this link to see more photos from the review.
The body is in 12 thou brass, and is of laminated construction; being mindful of there being in excess of 1,000 rivets on the prototype. The rivets have been etched in on an overlay, as opposed to using half-etch holes in the rear!
Five different kits are effectively offered, and the modeller will have to specify which variant is required.
- LMS D-1729 original raves sides and ends
- BR D-1/151 side raves solid ends
- BR D-1/152 second variant all welded body
- BR D-1/152 Calcined Coke conversion riveted body no raves
- BR D-1/150 Sand Hopper conversion
Castings for buffer bodies, leaf springs and axles boxes are in the kit, one style for all. The buffer heads, of correct 15" diameter equivalent, in turned steel are included. You'll also find a full set of decals for both LMS and BR.
All that are needed are wheels and bearings (and paint!) to complete. The W-Irons have been designed for Alan Gibson 26mm standard axles and waisted bearings, so that the wagon can be built in 00, EM or P4 (Although there is no compensation in the kit).This is not a beginner's kit! Despite the fact that the body is one piece fold up origami! The price reflects the quantity of material used in the kit - more than twice a 4mm scale main line coach kit.
Castings will be required for buffers, leaf springs and axles boxes, though the kit includes etched W-irons. You'll also find a full set of decals for both LMS and BR.
In keeping with our standard policy of high customer service, we will etch any requirements that the O-gauge modeller may have with respect to different types of W-iron (we supply the LMS ones) or modified W-irons to suit your chosen castings.
The etched W-iron spacings and body floor plan are designed around the Slater's axle length. The relationship between the two is an important integral part of the design of both the kit and the prototype.
In addition, subject to certain conditions, we will consider casting any of the above items from your own pattern.This is not a beginner's kit! Despite the fact that the body is one piece fold up origami! The price reflects the quantity of material used in the kit - more than a 7mm scale main line coach kit.
For those eagle eyed among you, there is a mistake or two in the completed model that is illustrated in the top two pictures. Needless to say, the final production does not include these errors! (For those who will go to the bother of downloading the photographs and zooming in - no it is not the ommission of the leaf springs! There is a long story behind that!!).