A start and run of the 13hp Beijer Hot bulb oil engine from 1928. This is able to run at 0rpm.

BORE: 210mm.
STROKE: 300mm.

So the cylinder volyme is on: 10.39Liters.

When I tune the injection pump down as far as i can, it fires so little every time that the piston only bounces back an forth on the compression and fires again-bounces-fires-bounces and so on.

It is used for stationary power. Like running a sawmill for example. So the 0rpm running is to no use really, just a cool feature to the audience on engine shows. Normally it runs at around 400rpm.