Jekyll, that's an anectdote I simply don't believe, unless the P-47 had no ammo, nearly dry tanks, and the Spitfire was carrying bombs.
![](http://bbs.hitechcreations.com/smf/Smileys/default/smile.gif)
I have seen plenty of flight test data for Spitfire Mk. IX, and it climbs about 50% better than any figures I've seen for the P-47D with or without paddle blades. Maybe at 30k or so, the Jug can match it due to the Merlin losing power. But initial climb - no contest.
It makes sense from an engineering perspective too - Spitfire Mk. IX power to weight ratio is far better than any P-47.
In order to match the 4700 fpm climb of the Spit, the Jug (14600lb, 2535hp) would need a zero-drag airframe and 82% prop efficiency. Unless there were some hidden rocket boosters, or a fusion energy source, this isn't going to happen, no matter what prop you are using!
[This message has been edited by funked (edited 04-18-2000).]