size 15, top tube 52.4, head tube 8.5, height 5-3 to 5-7
size 17, top tube 54.4, head tube 8.5, height 5-6 to 5-9
size 19, top tube 56.3, head tube 12.0, height 5-8 to 6-1
size 21, top tube 58.3, head tube 14.0, height 6-0 to 6-4
This is interesting - I'm around 6'4" and happily trundle around on a 19"C16 with (very) short travel forks - seems comfy enough, long stem mind.
Also have 21" Konas but they are much less easy to chuck around I find. Experiencing extremely slow build of 21" P7 frame so will be curious to see how that compares with the 19" in comfort terms. Maybe by xmas
EDITED BIT HERE
Something else which affects things - on the C16 I have a long SK8 stem, as is common, which lifts at approx 5/10 degrees I guess. On the Konas all my stems (so far) are flipped so they are almost horizontal rather than angled upwards.
I've always done this for some reason. Perhaps I have an odd arm/leg ratio
WANTED: Kona Sex One rear brake canti hanger pivot thingy - GOT ONE!
I could be tempted by a 19" - 21" Dave Yates (mountain) frame.................and no I still don't do trail centreshttp://www.corrieyairack.org/index2.html