Kawasaki Vulcan Forum banner

1 - 7 of 7 Posts

·
Registered
Joined
·
705 Posts
Well Googling steering angle give this -
The steering axis angle, also called caster angle or head angle, is the angle that the steering axis makes with the horizontal or vertical, depending on convention. The steering axis is the axis about which the steering mechanism (fork, handlebars, front wheel, etc.) pivots.

And this
What is rake angle on a motorcycle?
Rake (also called caster) is the angle of a motorcycle's steering head of the frame (A). Choppers have a lot of rake—their forks stick way out in front.

So that seems to indicate they are the same thing.
 

·
Registered
Joined
·
705 Posts
Then there's also this -
If you draw an imaginary line through the center of your bicycle’s steering tube (Steering Axis.) it will reach the ground at a point in front of where the wheel actually contacts the ground.

The difference between these two points is known as the trail. Trail assists steering; as you lean the bike to the left or right, the steering axis moves in that direction, and thereby turns the wheel in that direction as it pivots on the point of contact with the road.

Trail also assists the bike in holding a straight line. It works on the same principal as a castor wheel on a grocery cart, which goes in the direction it is pushed. (Or in theory it is supposed to.) This is why it is called “trail,” because the wheel trails along behind the steering axis.

Fork rake or offset is the distance between the steering axis and the wheel center. It doesn’t matter if the fork blade is curved forward in the traditional way, or if the fork blade is straight but angled forward from the crown. If the offset is the same the bike will

SO maybe related but not quite the same.
 
1 - 7 of 7 Posts
Top