I'm trying to do some calculations to understand steering geometry (specifically related to stretching the front end), and after looking at it for awhile I am doubting an initial assumption I made. I am specifically interested in the angle at which the drag link comes off the pitman arm when viewed from the top (or bottom) with the wheels pointed straight ahead. My initial assumption was the drag link should be perpendicular to the pitman arm. However, I'm now questioning that assumption.

Could someone with a stock front suspension/steering setup take a look at tell me if the drag link is perpendicular to the vehicle? If its not perpendicular, how far offset is the axle end from the pitman arm end (measured in inches forward or backward)?

Visual of what I'm talking about:



Thank you!

For anyone more curious about what I'm doing:

I'm investigating the relationship between input pitman arm throw and the responding steering arm throw for different positions of the front axle relative to the steering box. I'd like to better understand how moving the front axle affects steering. How much can the axle be stretched before the steering gets compromised to a point where it is noticeable? Can the discretion be corrected by offsetting the pitman arm on the sector shaft? Etc, Etc.