Originally Posted by
DaveSSS
I've bought my last 6 frames using only stack and reach, since they all had the same 74.5 degree STA. With the stack and reach numbers, I know exactly what stem length I need and the stem angle and spacer setup, before I buy the frame. I got no surprises. I never look at effective TT.
You're not looking at effective top tube length only because you've effectively fixed it by selecting the stack, reach, and seat tube angle. One could just as easily ignore seat tube angle by selecting the stack, reach, and effective top tube length. Both methods will get you to the same end point.
Originally Posted by DaveSSS
There's no use discussing this any further.
The discussion would end if you stopped making incorrect statements.