Hensley Arrow: How does it REALLY work?
There have been several discussions on this hitch that have become somewhat 'controversial'. I am NOT trying to stir this controversy/bashing back up. Instead, I'd like to see a good, intelligent di...
Forum Discussion
Virtual Pivot Point versus Apparent Pivot Point
It appears that the virtual pivot point and the apparent pivot point converge to the same location when the angle between TV and TT is zero.
Define:
Virtual Pivot Point (VPP) is the location at which straight lines projected through the centers of the side links will converge.
VPPmax is the location of the VPP when the angle between TV and TT is zero.
Apparent Pivot Point (APP) is the location at which the longitudinal centerline of the TT intersects the longitudinal centerline of the TV.
APPmax is the location of the APP when the angle between TV and TT is zero.
My AutoCAD models indicate that VPP and APP converge to the same point, VPPmax = APPmax, when the angle between TV and TT is zero. Also, for non-zero angles, APP never lies forward of VPPmax. Please disregard my earlier incorrect statement about the APP being at infinity in front of the TV when the angle is zero.
I hope that Tim can use his modeling software to confirm these findings when he returns. If they are correct, our task of answering how the HA really works should be simplified.
Ron
It appears that the virtual pivot point and the apparent pivot point converge to the same location when the angle between TV and TT is zero.
Define:
Virtual Pivot Point (VPP) is the location at which straight lines projected through the centers of the side links will converge.
VPPmax is the location of the VPP when the angle between TV and TT is zero.
Apparent Pivot Point (APP) is the location at which the longitudinal centerline of the TT intersects the longitudinal centerline of the TV.
APPmax is the location of the APP when the angle between TV and TT is zero.
My AutoCAD models indicate that VPP and APP converge to the same point, VPPmax = APPmax, when the angle between TV and TT is zero. Also, for non-zero angles, APP never lies forward of VPPmax. Please disregard my earlier incorrect statement about the APP being at infinity in front of the TV when the angle is zero.
I hope that Tim can use his modeling software to confirm these findings when he returns. If they are correct, our task of answering how the HA really works should be simplified.
Ron
