With reference to my last post on AH a/c performance my researches have shown that the SpitIX had a time to 20,000ft of about 6 minutes. The AH MkIX is about 30" too fast in reaching "angel twenty".
There is a post on AGW with a link to the tests done at Duxford during April 1942. The Spit was a IX, with Merlin 61, full span wings, full internal fuel, full guns ammo, radio and IFF. Well, the time to 20,000ft is exactly 6 mins.
Looks like HTC should look also into the Spit (yes, yes and the 109G-10 as well ...

).
Check it:
http://www.fourthfightergroup.com/eagles/spit9.html ------------------
Gatt
4°Stormo CT
"In the afternoon we again did this (strafing) and what I have dreamt of happened .... A single CR42 biplane took off and climbed up to engage me. We had a dogfight below the clouds and immediately over the aerodrome. It lasted a long time, about ten minutes. He was very good and much above the average italian. We believe he was a famous italian ace who had a crack squadron of CR42's. I'm very glad to say that he managed to bail out successfully when I finally finished him off."P/O Talbot
274 Hurricane Sqdn
[This message has been edited by gatt (edited 11-03-1999).]