Originally Posted by bkeith747
OP, et al.
, please explain how the mod stops this...[this is a real question; not a troll post]...
Let me do my best to break this down, but I will be the first to admit that this is not coming from the fingers of a mechanic. I have done ample research, but I'm always open to others chiming in.
Excellent photo, I will attempt to refer to this as the basis of my description. The picture you have provided is based off off one (1) axle. Keep in mind that our trucks do not deliver equal power
to each of the rear wheels at the time of acceleration, much like most other trucks that apply this U-Bolt/Spring Helper setup to their trucks. When braking our trucks springs also react differently depending on a multitude of factors. These variables cause this motion you have provided in the diagram to not only occur, but occur differently with each of our two sets of springs.
The Leaf Spring Helper, when used in its intended form adds to the strength, or support, of your existing springs and allows for an increase in load carrying capacity while also minimizing body roll and sway when towing heavy loads. The only difference in this application is the placement of the U-Bolts and/or Helper Spring in front of the Axle. Their placement provides rigidity to help prevent "wrap" or "twist" that occurs in the springs during acceleration or deceleration. This motion is also going to naturally transfer and occur in your U-Joint and axle, and be felt within your truck with the "thud".
This "wrapping" or "twisting" is not pictured in your diagram, but imagine being really, really, really ridiculously good looking, and very strong, and grabbing each end of the pictured leaf springs with your left and right hand. Turn one hand towards you, and the other away from you and you will see it twist, ending up almost like a Twizzler. Now take that same set of leaf springs, imagine your equally as strong, and place the U-Bolt and Plate right in the center of the set this time. According to the laws of physics, and the basic knowledge of leverage and force you realize that you have just shortened the distance between the two points that are allowed to "twist" or "wrap"....making it much more difficult to occur.
Think of the old "fold a piece of paper 12 times" game. The smaller the distance between the ends of the folds, the more force that is required to bend the paper over.
I was doing some research on a Hellwig Rear Sway Bar earlier, and ran across their branded Leaf Spring Helpers. Most of us are aware of their company, and the quality of their products, and they actually offer Leaf Spring Helpers with U-Bolts on each end
. Their kit might actually be the usable middle ground between the divided parties on this subject, but then again, this project is easily completed on a budget....And their kit sells for about $56.00 bucks on Amazon
. At least you would have a Hellwig product on your truck instead of rocking the DynaChrome. They have even gone so far as to already provide you with black components!!