Allen
Member
Here is what the movement is for the lower control arm at 4" of vertical travel which is a bunch. Less than 1/8" per side. The 17" is the center to center distance between the inner and outer pivot shafts on the lower arm ...if I remember right.
The other thing to note is angle of the movement. 13.5 degrees is what would be required for the 4" or vertical wheel travel and a 5/8" Spherical Rod End Bearing allows 16 degrees of misalignment. No problem there.