given 73 degree head angle is 17 degrees off vertical, so a 17 degree stem is horizontal
in 'angled down' installation,
or 107 degrees
90 degree stem[zero angle] mounts up 17 degrees, and a 6 degree stem is at 23 degrees
or 11 ..
Last edited by fietsbob; 10-30-10 at 07:08 PM.