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Why the steeper the better? I mean yeah, steep angles look cool, but Ed (above) is right when he warns that a steep seattube will have the same effect as a longer TT.
By the way, if anyone cares, this is my current T-Rex list:
Bill Whitcomb pursuit track (1985, Columbus SLX): ST 63.5 c-t, TT 58 c-c
Unknown British track (mid 80s, Reynolds 531): ST 62 c-t, TT 56.5 c-c
Preuss road (late 80s, Columbus MAX): ST 61.5 c-t, TT 57 c-c
Rob Telfer road (late 80s, Reynolds 531c): ST 58.5 c-t, TT 54 c-c
Argos road (late 80s, Reynolds 531c) ST 62 c-t, TT 52.5 c-c
From what I could see after some quick and dirty camera angle corrections in PS, it should be somewhere in the common range (I read around 75° for both).
Headtube is 19.5cm by the way.
I have another bike (yes, I am a notourious T-Rex collector, five in total), a track frame, which is 62cm c-t as well with a 56.5cm top tube, and it has a 21cm headttube:
https://www.lfgss.com/conversations/276867