FISCHER & ENTWICKLUNGEN made a 2-stroke, 3-cylinder engine to assist gliders taking-off. It is the ASW24-TOP model that gives 24 CV.

There is also the ASW-20, the Cirrus-75 and the plain Cirrus.

-Now there appears anothor engine of this brand:

-The TOP-TOP F-1600. As a special propulsion system, but without further news at the moment.