Re: ground overheating. Planes that have a center mounted radiator in the prop wash, P-51, etc. tend to get better ground cooling. Spits have the rads out under the wings. Through Mk V, they had only 1 rad, then 2 rads for the 2 stage Merlins, then larger, deeper rads for the Griffons which can ground run longer. Other factors are how new(clean) are the rads & of course air temp and headwinds, & especially is the engine a cold start or already flown. I shut down at 110 C and cool off to avoid leaks, and on landing I delay flaps till final. The good side is Spit cockpits are pleasant in the air, a P- 51 is like an oven as are many radial fighters. A Spit engine cools down as soon as the gear is up, even in climb and high power cruise. Ist start on a cool day I might be able to taxi 25 min, on a 95F Osh day 2nd flight, maybe 10 min. My MkIX has a ceiling of 43,000' and no cockpit heat! That sheepskin would be vital!
_________________ Bill Greenwood
Spitfire N308WK
|