Originally Posted by woodytwo
Tried to find discussion of older Reese vs newer Reese style hitch but my lack of computer skills were no help. What does the jury say?
Both Reese system have the same mechanical function to control sway and distribute weight. The difference is in the way one sets up the system. The newer Straight Line system greatly reduces the complexity of set up in that it provides a method of initially setting the bars to saddle relation. The older system required adjusting the U bolts that hold the trailing arms to the frame ever time you change the hitch head. While that sound simple it was a very time consuming thing and one that caused a large percentage of Reese system to never have been set up correctly.
The bars must sit centered on the cams while the trailer is aligned as it would be driving straight down the road. The newer system provides for the bars to float on the cams until final adjustments of WD and have been accomplished. At that point the trailing arm nuts in the yokes are tightened down and the setup is done.
There is an inherent problem with the new system in that the outer bar can come in contact with the yoke while make a tight turn while backing up. If not addressed during installation it can break the yoke. I now install the trailing arm to the frame of the trailer rearward rather than forward. This completely eliminates any possible problem while retaining the original intended function of the trailing arm. I am sure there will be those that say this is illegal, immoral, and fating but it works.