A long overdue update:
Progress has been interrupted by the need to rebuild my microlight engine, following an in-flight failure and forced landing in a random crop field. No damage to man or machine (apart from the dropped valve, piston, rod and barrel!) and the landowner was more interested in taking photos of the aeroplane in his field than complaining about it. He even helped with the recovery.
The radial engine now has its auxiliary drives gearbox on the back of the crankcase, containing 2:1 reduction bevel gears driving a vertical shaft which drives the main oil pump.
In progress is the oil tank, which also acts as the engine mount. The tank design is a short cone, for which I had to make a set of versatile bending rolls. These will later be adapted to roll the exhaust collector ring from 38mm stainless tube.
Photos of the bending rolls and the oil tank in progress added to the album.