Hello again,
just watched it two times, and i think it is done quite well
For me it is a bit brief in some aspects, but the information is correct and nicely put together. Hans Techel is seldom mentioned, so this was a nice surprise.
Those special smaller and specially "rafted" silent engines engines would be called "Motoren für Scheichfahrt" like "engines for silent running". So i am not sure whether
creep or
crawl engines is the correct description, it somehow sounds a bit strange - but everyone will know what you mean anyway.
Are you doing this completely privately, or is this some work for a study/education project?
Nice video