Vol 2 All the Spitfire questions here

[gingerbob]

It appears to be an error in the Pima example.  It has no engine and does not have original structure (not all, at least) under the cowl.  According to Will, the downthrust angle measured by the scan is approximately 4 degrees, while their scan of Duxford's Mk.24 was approximately 2 degrees.  Someone also provided him with a GA drawing of the XIX which confirmed 2 degrees.  As far as I know, all Griffon Spitfires/Seafires had the 2 degree angle.

 

The important point here, I think, is that they did their homework, came up with "something that makes you go 'Hmm'", and asked for more information. 

 

Thanks all who contributed to the discussion,

 

bob

[Scimitar F1]

Thank you @gingerbob and everyone else who contributed. 
 

A good result - it makes it easier for us to cover the full range of marks.