Bogey. here is something i don't understand despite trying to get my head around it. maybe you can 'splain me. take 2 frames (real frames/measurements, not hypothetical) with nearly identical top tube and seat tube dimensions (74/74.5 EST and 650/647 ETT) measurements. now the first bike has a reach of 465mm and the second bike 483mm. how can this be? how can the seat tube angles, effective, and then the top tube effective be nearly identical, and their be so much difference in the reach dimension? for the record the first bike has a WB of 1201 the second 1217 and is a degree slacker. norco shinobi/transition smuggler
Here is a pretty good/recent article that really helped me condense my thoughts on reach and ett.