Re:
Hi 1978. Thanks for the geo chart. I found the same thing in German but this is way more useful as I can read the rest of the info as well
I came to the conclusion it was classified as large to XL by Seat tube, but medium by top tube so decided to take a punt as the dimensions were within the boundaries of the four bikes I measured before committing (RC200F6 18”, Dekerf, Bonty Ti 17” and M Yo).
It’s here now and a bit grubby but it cleaned up well and will look way better with some new decals, paint touch up and a bit of polish
And the best bit is it fits; the dimension I always find most important is saddle nose to bar centre and this is within 10mmof my other bikes so easily tweakable with saddle and stem adjustments
I think I’m going to build it with M730/2/4 XT “rider” spec. I.e smart but not too flash.