One thing that puzzles me... how come it has a mixture control knob? I suppose you COULD do the Fuel Condition this way but it seems unusual, to say the least. On the other hand I guess it really is a turbine since it doesn't have the mag test positions on the key.
As for the drive, if it ISN'T either belt or gears then it will be jolly interesting to find out what it is! Photonic drive? Electric transmission like on railway locomotives? Chains? Hydrostatic?
Actually there's a pic I saw somewhere which seems to show the engine angled upwards (from the rear), presumably it can just drive the gearbox directly, no need for a "clutch" (quotes because it's the most un-clutch-like clutch I've ever come across).
n5296s