We have a lot of information from Hartley in the AOMCC Archives. Many members wrote to him for advice and much of that has found its way into the archives. A lot of what he wrote was standard advice on tuning but some gems exist and most letters from the man offer a special camshaft or piston. Invariably, it is the last one he has so the member in question duly paid the money and bought the item.
One AOMCC member in particular has done a lot of research into Hartley's methods. This work is incomplete and unpublished but I have seen parts of it which are interesting, to say the least. Until such time as this work is published, "The Ariel Story" by Hartley's son Peter, available through the Club, remains a very detailed and instructive account of Hartley's work.
36 4G, 37 VH, 54 KH(A), 75 Healey 1000/4, 52/53 ex ISDT KHA (project).
Former Machine Registrar & Archivist, General Secretary and Single Spares Organiser (over a 25 year period).
Now Archivist once more - but not Machine Registrar.