back around then the main speed trap was at the Highlander as I remember plus sometimes one was set up around the Creg - the one that got Mick Grant at 190mph or something on a kawasaki in the late 70s - don't think technology was as accurate and consistent as it now.  I think that as the bikes handled better and Quarry bends were smoothed and flattened it moved to sulby where it is now - can;t remember when they moved, no doubt one of the egg heads on here will know chapter and verse - to me the TT then was like the sixties, if you can remember you weren't there!