Many thanks to everyone for replying. I have bought all that Superchalk64 has and yesterday bought that edition of the Aeromodeller. Picked up a few things here and there and someone is kindly letting me borrow some manuals and books from the CAHC at Newquay. Interesting to know of the 1920s device. Not sure if we want a fullsize Vulcan model, but least know it can be done!

Best wishes to all,

Martin