I stumbled upon
this article from rivbike explaining the relative (un)importance of the effective toptube measurement in bike fit. Question 2 in the follow up quiz at the end of the article is particularly related to my situation:
Short rider, gender indeterminate, looking at two bikes, both blue. Blue Bike
B is 50cm with a 74° seat tube and a 52.5cm horizontal top tube, threadless
headset etc. Blue Bike C is 52cm with a 72.5° seat tube, a 54cm top tube, and
has a threaded headset. Assuming sufficient standover clearance in each bike--
in other words, the 52cm is not too big--which bike is more likely to be the more
comfortable, and how come?
I want this track frame to fit me:
~50cm ETT
+75 degree STA
This is my landshark, it's honestly a little "big":
54cm ETT
73 degree STA
0 setback post
100mm/-17 stem
You guys think I can make it work?