Joined: Apr 2010
Posts: 6,341
Likes: 326
From: Mountain View, CA USA and Golden, CO USA
Bikes: 97 Litespeed, 50-39-30x13-26 10 cogs, Campagnolo Ultrashift, retroreflective rims on SON28/PowerTap hubs
17, producing an angle of 90 - 17 = 73 degrees with the steerer like classic quill stems were measured or 90 + 17 = 107 degrees.