Comments by "David Elliott" (@davidelliott5843) on "How Pratt u0026 Whitney Changed Aviation" video.

  1. I’ve always wondered if those engines would have cooled better with wider spaced cooling fins. Typical Japanese air-cooled motorcycle engines make around 100bhp from 1000cc (60 cu in). The cooling fins are much wider apart yet if anything, they run too cool except for traffic jams in hot weather.
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  2. My dad made loads of Airfix kits When I was a kid. We found them in the loft when Mum died. Sadly they all fell apart - aged plastic.
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  3. My thinking is a two valve 900cc bike engine easily makes 90 bhp with no shrouds to guide airflow. It has to shift A LOT of heat from a small lump of metal. Especially as the overhead cams block airflow to top of cylinder. There’s also the blocking effect of the air intake box immediately behind the engine. Cooling fins are longer in hotter areas but have at least 6mm air space. Often more. Nobody is going to destroy a piece of history to prove a point but I suspect there’s a fundamental design error.
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