Cylinder bored and faced, ports cut, base, pillar and valve chest machined. Castings to complete, plus ready-machined bevel gears and balls for governor. Work to date is to a good standard. The drawings are rather age-tattered but useable.
Castings are still available for this engine from Blackgates.
7/8 inch bore x 2 1/2 stroke
Flywheel 9 3/4 inch diameter