Originally Posted by
13ollocks
That's exactly what it is- an imaginary horizontal line from the center* of the head tube/top tube junction to the center of the seatpost.
*maybe from the top of the top tube/center of the head tube? Not sure that it's make a huge difference to the actual numerical measurement
Thanks. Also…this bike has the picture headset. Is this an adjustable stem in that the height of the stem/bar flats can be adjusted? Does that bolt need to be complete removed, and disassemble to make adjustment? It doesn’t seem to want to move when I loosen it.
Dan