Thanks for that. It'll give me basis to calculate from. Swindon strikes me as a good comparison, as I think, it has remained pretty much unchanged. Stoke, for instance, has changed in position & lenght a couple of times at least.
..and Swindon & Crewe both had the same time, so that makes it easy, and Crewe's record would probably have kept pace and been 64.65sec, thats makes an average speed of 55.18mph on current machinery.
Interesting to see that Les Collins held the Stoke record in 1976, and shows how far he come in 12months...as he would almost certainly have stayed at Crewe for '76 had we kept going....as would Chris Turner!!