Originally Posted by
gios
Thanks.
Initially, I thought - 54 was stamped on the bb of my Gios Compact Pro frame so a size
large Lynskey frame. Measuring the Gios top tube ( B on Lynskey chart below) I get 21" / 53.3 cm - which points to
small to
medium. Measuring the Gios seat tube length (A on chart) I also get 21" / 53.3 cm -
medium large to
large. Using center to center measurements.
I'm 5' 10" and my inseam is 31 3/4".
edit: a search yielded a Gios seat tube angle of 74 degrees - which points to size
small.
Confusing! It might help to keep in mind that top tube length and stem height can't be adjusted as much as your saddle height.
That said, a small or medium frame seems to be the ticket. The small frame will need a longer stem, and you might need to leave the steerer longer so you don't end up too hunched over.
Lynskey is measuring to the top of the seat tube, which doesn't have much meaning with a compact road frame unless you plan on riding it like a hybrid. The
actual seat tube length is measured to the intersection with the effective top tube.