LNER Y4 |
Construction described by Ross Harrison in Engineering in Miniature where it was known as "BLACKWALL"
The prototype is an outside cylinder 0-4-0 side tank with outside Walschaerts valve gear. It was designed by A. J. Hill and the first one was built in 1913 at Stratford numbered 227; it was classed B74 by the Great Eastern Railway. In 1914 two more were built to a lower loading gauge to suit Devonshire Street and Mile End Goods Yards and to work in the Pepper Warehouses at Canningtown. They were painted grey and had brass topped chimneys. The last one was built in 1921 and spent all its life as a service engine at Stratford Works. In 1931 number 227 was cut down to the specification required for Devonshire Road and Mile End Yards. They were well known for rocking about due to their short wheel base and large overhang and often knocked off the cylinder drain cocks when travelling over paved lines found in dockyards and streets. The last one was withdrawn in 1963. The 5" gauge version has been considerably refined since the original design was produced to bring it much closer to scale without sacrificing either strength of construction or power of the locomotive.
Drawings
| 1 | General Arrangement, frames and axleboxes |
| 2 | Wheels and brakes |
| 3 | Cylinders & Brake Gear |
| 4 | Valve gear |
| 5 | Boiler |
| 6 | Lubricators, smokebox, ashpan and firegrate |
| 7 | Tanks |
| 8 | Finishing details |
Materials
| Laser cut frames | |||||
| Frame steel only | |||||
| Buffer beams | |||||
| Springs |
Castings
| Horn blocks | Weighshaft trunnions | ||||
| Axlebox block | Smokebox back, front, door | ||||
| Frame stretcher | & bottom | ||||
| Pump stay | Chimney | ||||
| Wheels | Dome | ||||
| Cylinders | Dome ring & bush (material) | ||||
| Steam chests | Safety valve cover | ||||
| Steam chest covers | Drawhooks | ||||
| Cylinder covers | Brake blocks (8) | ||||
| Piston blanks | Brake cylinder | ||||
| Valve castings & drive blocks |
LNER Y4 - NEW ITEMS AVAILABLE
To assist builders of this loco in saving time we have now produced a complete set of laser cut parts for the tanks, cab, footplating and step plates. We have also produced a laser cut smokebox wrapper plate with all the rivet holes cut. Another laser cut set of parts is being produced for reversing lever and quadrant, drain cock lever and linkage, weighshaft arms & reach rod and brake shaft arms.
Complete set of CNC machined rods & valve gear - to order.
For budding builders we now have a video showing our own three Y4's hard at work on shunting duties in the yard at Gilling Main Line Weekend. There are also scenes where the Y4's are working "pick up" goods trains, all of which go to show what a powerful and versatile engine this is.
