A Bartle showed his model of this classic 1920 petrol engine as used on farms for pumping water, powering machinery and so on, at a recent Doncaster show. The model takes its inspiration from the 2½" HP Lister Junior. A kit is available from The Engineers Emporium and includes aluminium and iron castings, a pack of material and 64 pages of drawings.
-
•Principle dimensions - 23cm high (9"), 15cm wide (6"), Flywheel diameter 10cm (4"), Bore ¾", Stroke 1¼".
-
•Hopper water cooling (including cylinder head).
-
•Exposed valves.
-
•Glow ignition (for simplicity, can be converted to spark ignition).
-
•Working governor.
-
•Twin cast iron flywheels.
-
•Can be built on a 3½" lathe.