The D49 is one of three Wilesco marine engines (that I know of) and is the rarest of the three. Like the other two models, it is supplied in two parts, boiler and engine, which can be installed into a boat hull in a variety of configurations.
It has a vertical brass boiler with a single flue, 65mm diameter x 100mm high. It has a tablet burner, which can be inserted from either side, so as to improve the flexibility of configurations. Fittings are a safety valve, spring lever type whistle, fancy capped chimney and a steam feed pipe. The engine is supplied with a selection of short lengths of brass piping with connector pieces. The engine unit is twin cylinder V configuration with the cylinders at 90 degrees. Steam is fed via a reversing valve, which is designed to be servo controllable. The cylinders are double acting piston valved, approx 11mm bore x 16mm stroke. Each cylinder has it's own oiling point. The con-rods are connected to a common crank on the crankshaft, which has a 50mm 5 spoked flywheel and a twin pulley in the middle and a protruding shaft for coupling to the prop shaft. The engine is in used but generally good cosmetic condition. It runs well on air but poorly on steam. This is still to be investigated. I have mounted it on a plywood base.| Make | Wilesco |
| Model | D49 |
| Date Made | ? |
| Description | V twin marine engine |
| Cylinders | 2 |
| Cylinder Type | Double acting reversible |
| Bore mm | 11 |
| Stroke mm | 16 |
| Valve Type | Piston |
| Boiler Type | Vertical with single flue |
| Boiler Diam mm | 65 |
| Boiler length/height mm | 100 |
| Fuel | Tablets |
| Mechanical Condition | Poor |
| Cosmetic Condition | Good |
| Paintwork | Original |
| Packaging | Cardboard box |
| Purchased | 13 March 2021 |
| Purchase cost | £275 |
| Additional spend |