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Email:   bridport_foundry@btconnect.com
Plastow Traction Engines Slide

Wallis & Steevens Road Roller

  3 in. 4 1/2 in.
Overall Length 34 3/4 in. 52 1/2 in.
Overall Width 14 1/2 in. 22 in.
Height 26 in. 39 in.
Weight 168 lb. 504 lb.
Working Pressure 90 p.s.i. 90 p.s.i.
Cylinder Bore 1 in. 1 1/2 in.
Cylinder Stroke 1 1/4 in. 2 1/4 in.
Flywheel Dia 4 1/2 in. 6 3/4 in.

In the mid 1920's Wallis & Steevens Ltd., of Basingstoke, Hampshire felt there was a need for an easily maintaned roller for use on dirt roads - mainly in the Far East. Our 3 in. and 4 1/2 in. single cylinder engines are based on their Simplicity Roller, to the modeller these engines are just that simplicity, as far as the building is concerned.

The hauling power of these rollers, size for size does not compare with a traction engine, basically they are a lower powered, low geared unit designed for economical rolling, having a fore carriage which may be locked in the horizontal or allowed to swivel.

The construction of these engines in straight forward with few of the traditional complexities associated with large scale models of this type, having no orthodox firebox, only one set of driving gears, and an attractive sloping boiler design.

The Front and Rear rolls are cast in one piece, the inside is hollow and the holes are neatly and cleanly cast in both sides. The only machining necessary is to bore and face the hub and turn the O.D edges of the roll.

Wallis & Steevens Castings

Qty Name 3 in.
Part No.
4 1/2 in.
Part No.
 
1 Furnace Damper Door 85100 85600  
1 Firehole Door 85102 85602  
1 Firegrate 85104 85604  
1 Furnace End 85106 85606  
1 Smoke Box Spacer Ring   85608  
1 Smoke Box Door Ring 85196 85610  
1 Upright Stud 85108 85612  
1 Chimney Cowl 85154 85614  
1 Chimney Base 85200 85616  
1 Steering Segment Bracket 85110 85618  
1 Saddle Bracket 85112 85620  
1 Saddle Fork 85114 85622  
2 Rear Sub Axles 85204 85624  
1 Right & Left Second Shaft Bearings 85156 85626  
1 Gear Shift Bracket 85158 85628  
1 Brake Shift Bearing 85116 85630  
1 Brake Bracket 85118 85632  
2 Dummy Spring Box 85120 85634  
1 Differential Gear Centre 85122 85636  
2 Rear Roll Gear Rings 85124 85638  
1 Differential Bevel with Boss 85128 85640  
1 Differential Bevel without Boss 85126 85642  
1 Pump Eccentric 85130 85644  
1 Reverse Lever Bracket 85132 85646  
2 Crank Bearing Housing Top 85206 85648  
2 Crank Bearing Housing Bottom 85208 85650  
1 Flywheel 85134 85652  
1 Rear Cylinder Cover 85136 85654  
1 Top Cylinder Cover 85138 85656  
1 Cylinder 85140 85658  
1 Front Steering Bracket 85188 85660  
1 Rear Steering Bracket 85192 85662  
2 Front Rolls 85144 85666  
2 Rear Rolls 85146 85668  
1 Injector 81206 81722  
1 Injector Check Valve   81724  
1 Blow Down Cock 85148 85670  
2 Check Valves 85150 85672  
1 Manhole Clamp 82178 85676  
1 Gear Shift Fork 85160 85678  
2 Rear Hub Caps 85162 85680  
2 Crankshaft Bearing   85682  
2 Valve Eccentric Strap 85190 85684  
1 Big End Bronze 85164 85686  
1 Front Cylinder Cover 85166 85688  
1 Main Trunk Guide 85168 85690  
1 Valve Shaft Boss 85170 85692  
1 Steam Valve & Carrier 85172 85694  
1 Pump Eccentric Strap 85174 85696  
1 Pump Body 85176 85698  
1 Pump Valve Box 85178 85700  
1 Pump Gland Bush 85180 85702  
1 Safety Valve Body 85182 85704  
1 Safety Valve Outlet Elbow 85184 85706  
2 Motion Cover Name Plate 85186 85708  
1 Brake Lever 85142 85664  
1 Chimney Base Ring 85202 85712  
1 Steering Wheel 85210 85714  
 

Wallis & Steevens Drawings

Qty Name 3 in.
Part No.
4 1/2 in.
Part No.
 
1 General Arrangement Drawing 701 801  
1 Boiler & Hornplate Assembly Drawing 702 802  
1 Front Assembly Drawing 703 803  
1 Gears & Rear Roll Assembly Drawing 704 804  
1 Motion Drawing 705 805  
1 Cylinder Assembly Drawing 706 806  
1 Canopy & Water Tank Drawing 707 807  
1 Additional Detail Drawings (7 Drawings) 708 808  
1 Complete Set of Drawings (14 Drawings) 709 809  
 

Wallis & Steevens Miscellaneous Parts

Qty Name 3 in.
Part No.
4 1/2 in.
Part No.
 
1 Steering Worm & Segment Gear 45102 46102  
2 Wheel Valve (requires modification) 71533    
1 Wheel Valve 71532 71533  
2 Union Cock 72001 72003  
1 Pressure Gauge 71137 71142  
2 Piston Rings 72400 72403  
 

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