Slow Runner Model Hot-bulb Semi-diesel Engine. - YouTube
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Startup and running of a 1929 Kromhout M1 hot bulb engine. - YouTube
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Mechanical education - Hot bulb engine | Facebook
Find Hansen - The Miniature Engineering Craftsmanship Museum
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File:Hot bulb engine or heavy oil engine.jpg - Wikimedia Commons
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Two stroke hot-bulb engine
Hot-bulb engine - Wikipedia
