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
Ron Gratz wrote:Stressor wrote:
My point exactly. The leverage of the linkage prevents a change in geometry.
The linkage does not prevent a change in geometry. The linkage does not prevent the TT from swinging behind the TV. It is only the lateral forces on the TT's tires (and inertial effects) which prevent the TT from swinging. If a gust of wind hits the side of the TT, it will swing to a new yaw angle. When the wind goes away, the TT will swing back. The linkage prevents neither swinging to nor swinging fro. However, the effective lengthening of the TT tongue will have some effect on the period and amplitude of the swing.
Ron
Sure it does, from the trailer to the TV. From the TV to the TT, the angles allow it to change.
If a gust of wind hits the travel trailer, it will not yaw at all, unless you loosen the strut bolts a turn or two, other than that, the trailer does not swing either way.
This is easily observed in the rear view mirrors, and a simple experiment demonstrates what happens when the hitch head is allowed to move.
Let us not trivialize or ignore the statements made. The orange head of the Hensley does not move, relative to the trailer tongue, period. Do not misunderstand what the patent document states, and do not assume that a patent document is intended to be a straight forward explanation of how something works. If this were true, engineers would do the interpreting, not patent lawyers.
Only the lower linkage moves, all moment is transferred through the linkage, and if the linkage greatly resists yaw, it effectively prevents the trailer from yawing.
As illustrated.
