Comments by "Martin Saunders" (@martinsaunders7925) on "Engineering Explained" channel.

  1. Seems the weight would be comparatively low for a diesel. Compactness might lead to heat concentration around middle cylinder.
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  2. The Deltic was a 3 crank engine with pairs of opposing pistons in a triangular configeration,or delta. Fitted to some U.S. patrol boats in Vietnam
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