About This engine...
Specification: 11D
Horse Power: 1.5
RPM: 700
Spark Plug Gap: 20 thou. Points Gap: 10-12 thou. Tappet Clearance: 31 thou. Ignition Timing: 15deg BTDC.
The engine is a four stroke petrol type which runs on unleaded fuel.
The engine speed is controlled by a governor. As engine speed increases the bob weights are thrown outwards which alters the length of the shaft through the body. The linkage to the butterfly within the carburettor is connected to this and thus the butterfly is adjusted by the speed of the engine, closing the butterfly as speed increases to reduce the amount of fuel/air mixture entering the combustion chamber.
The high voltage for the ignition spark plug is produced by the magneto. There is no battery involved. The magneto on this engine is driven by a chain early later were driven via a coupling.
Note on this engine that there is no carburettor float chamber. Fuel is drawn directly from the tank by the suction of the engine. The engine is therefore more temperamental about the level of fuel, and will eventually stop unless either the level in the tank is maintained, or the mixture screw adjusted to create more fuel suction.
The engine is cooled by water. The hopper is filled with water and this also surrounds the combustion chamber. During normal use the water boils and just evaporates away, therefore it is important to monitor the water level and top up as required.
General Lister "D" Information...
CC: Approx. 347
It is normal to only quote the horse power rating of a stationary engine, but many people ask what the cubic capacity (CC) is and so I have included it here.
Bore & Stroke - 3" x 3"
Compression Ratio - 5:1 for petrol and 4.5:1 for paraffin
Compression Pressure - 120lbs for petrol and 100lbs for paraffin
Weights - 250lbs for the bare engine and 298lbs with the fittings
Height - Approx. 26" (Engine Only)
Hopper Capacity - 6 pints