Hello,
I am searching for a good frame for my next build which is to be road disc with thru-axle and I came across this Cinelli.



I am trying to get a bike with a geometry close to that of my beloved Kestrel 200 Sci.





The superstar gets close, however the more modern geometry is not as straight (ha) forward as the Kestrel.





What confuses me about the SS's geometry is the "virtual" seat-tube length. With the numbers given, I can calculate for size M:

T1-reach=550-387=163
Stack is then 548, so: 548 squared + 163 squared = C squared = 326,873.
Root that and we have a "virtual" seat-tube length of 571.73

That strikes me as quite a tall seat tube for a size M. So, am I not understanding the dynamics of the more modern geometry or what? My inseam is 77 and my saddle is typically 74.5cm from BB center. Would the M then be OK? The "virtual" top tube length of 550 is nearly perfect. I do however like the wheelbase of the size S much better, as it is much more similar to my 54cm Kestrel.

If I calculate the "virtual" seat-tube length of size S, I get 543.12 which is much more in my arena. Only thing about the S that I don't like is the 2cm shorter top-tube, which is really no biggy as I run a 110mm stem on the kestrel and could take that down to an 80 or 90.

All that said, the color scheme is regretfully quite feminine, something I would have to change if I were to purchase it. I am however still very interested and believe that this may just be a great performer for this price point. Wondering if anyone has some personal experience and a few words they would like to share about it. Any help with the sizing would also be great! Thanks in advance.