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re diesels
Kevin
Diesels are a different breed of animal. Problems are;
1) diesel fuel congels at lower temps.
2) engines hard to start or restart at low temps.
3) I would assume that normally aspirated diesel power falls of rapidly as altitude increases (worse than gas engines).
4) harder to air start due to the compression ratios being above 12:1 (typical).
The Germans prior to wwII manufactured some rather large diesels but eventually were displaced with lighter (hp/weight ratio) gasoline aircooled engines.
I would assume there would be some vibration problems to overcome when the engines are full out.
just some thoughts.
bob
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