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@Peter_Carter
More on fit
]www.coloradocyclist.com/bikefit The stuff on knee over pedal is not evidence based , but on the whole this a good start. The other view on KOPS is that centre of gravity and weight distribution are more important. Its also a bugger to do.
Go to the Rivendell Bikes site , yes its Tolkien inspired, for how to measure your PBH
Then try the Dave Moulton frame chart for top tubes and stems sizes - go to his webiste and find it from there , However, he tends to go for smaller sizes than the colorado method by 2cm > Either that or I am atypical. My view now is that if you go for a higher saddle height than the heel on the peddle method, then you need a bigger frame than Dave reccomends.
]Don't be afraid of the higher position, but move it up gradually.