My kit is marked "Vladika Model", but is also produced by Aeronaut, having no patterns or instructions I have relied on the aeronaut, found (in German sob...) on the internet, and looking the photo on the box.
On the box it says it works with a Speed400 reduced 3: 1 with a (bad) 3 propeller blades 40mm, but I put a simple speed 600 20T with a 4-bladed propeller brass 45mm bought on ebay in singapore