Lately I've been reading a lot about Maschinen Krieger (Ma.K) ,also known as ZbV3000, on several internet sites. Until last weekend I actualy had not seen 1 Ma.K kit in a local store or on a model fair, but last Saturday (22/04/2017) I managed to buy some Ma.k related stuff at the "Mordus Du Kit" fair which took place in Wavre Belgium.
The "Falke" engine originally was made from a Yakult bottle and on the internet several examples can be found of scratch build examples. This is how I got the idea to try and build my own Yakult Falke style engine, just using an empty bottle and some bits and pieces.