[Username]

User name is it possible to get higher res copies of the pictures you have put up, so i dont go blind when i put my nose on the screen lol

Lol. Sorry about that! I've increased the size now, so hopefully it's more legible.

Re the source of the information, the scans are from 'British Piston Aero-Engines and their Aircraft' by Alec Lumsden (Member of the Royal Aeronautical Society). It took him 30 years to gather all the information and produce the book (published 1994 priced at