Assertion: tractor's engine | /r/HasProperty | curtiss-wright r-3350
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text: (Isotov) turboshafts from Russian helicopters, Soviet Zvezda M503 torpedo boat engines, Continental AV1790 tank engines, or World-War-2-era aircraft piston engines in V12-shape (e.g. Rolls-Royce Griffon) or as radial engines (e.g. Curtiss-Wright R-3350).