ScottG wrote:
Look at the instructions, they will tell you the bars are to be parallel - and there's good reason for it.
Also look at the actual cam and how it fits into that upside down "V" in the spring bar. This is how the WDH keeps the trailer straight behind you. When the trailer moves away from straight behind the truck, that spring action of the cam climbing out of the V resists movement. When you have it at an angle it makes it too easy for the cam to come out of the V and you have diminished sway control. The steeper you have the bar, the easier it is for the cam to move out of the V. That defeats the "active" sway control.
Scott,
You are giving wrong info for a trunnion bar system!!! Round bars, yes, they should be close to parallel to the trailer frame or ever so slightly point down.
BUT a trunnion system is different. I have read the directions for a Reese system, and the numerous pages I linked in my last post which specifically deals with a DC system. Numerous post by some very knowledgable fellow members regarding the angle of the trunnion bars in relation to the frame to allow clearance of the trunnion lug so it doesn't hit the bottom of the trailer frame.
Here is a link to the instructions to a Reese Trunnion bar system, which gives a starting point with dimensions for the spring bar angle. NO WHERE does it state the bars should be parallel to the trailer frame. http://www.reeseprod.com/content/downloads/installation/N66022.pdf