Join Date: Jan 2017
Location: Salt Lake City, UT
Year/Make/Model: 2000 Vulcan 800A
Rake is the top angle that you have shown, the trail is the length from the center of the wheel to the rake angle along the ground. People may talk about them interchangeable because when the rake angle increases so does the trail dimension. As the Rake and Trail reduce the steering and handling become easier but the stability reduces. Conversely as the Rake and Trail increase the stability increases but the handling decreases.