109 e3b against spitfire II

[TomcatViP]

Originally Posted by Viper2000

OTOH, because the supercharged engine is smaller, it has less non-cooling drag, and so you'd expect to cruise faster, which helps to make the radiator smaller.

Funny that Merlin Vs DB tell the opposite.

Seems you forgot one parameter : rpm and charging raise the strain and the temp with negative consequence on efficiency: try to win the 24h Le Mans race with a 2L engine and then jump in 7.0L 'vette

To put it in perspective : there was no successful post war Merlin engined airliner. But lot of with P&W primitives big radials