Last Saturday I started with the following:
(3.142*51*15)/48= 50.07mm / rev. And it was a miles away very slow.
By the end of the night I was @
(3.142*51*18)/48= 60.09mm / rev. This was still not close to the 13.5's but it was starting to get there.
I think Martin is close to this figure also.
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