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This is one engine I personally have not seen in any magazine. From the unusual mounting, I'd have to assume it was designed for a cast speed-pan to minimise the fuselage width. Not also the "impossible" rear ball race in the section view .
The scans were sent in by Model Engine News supporter, Jens Eirik Skogstad (Norway). They came from a book titled "Model Engines" which was published in the Former USSR in 1958. If there are any Russian/English speakers out there who would like to provide a translation of the text, we'd be pleased to include it here.