RinconVTR wrote:
mosseater wrote:
I've thought about trying these or a version of them. Did you do front and back or just front? I would think in a longer trailer you might need to do both just from tire squish at the pivot point. I've also thought about another set of jacks near the center to take susupension/tire bounce out of the equation.
Just the front.
The tires being the center of rotation, adding a jack in this location is counter intuitive. (it will make matters worse)
The 4x4 and chain rig does the very same thing, but supports the tongue directly vs the jacks. Its a bit red-neck, but that type of support system will have the same good result.
IMO, those who still see and feel suspension and tire movement on jacks are not watching the watching the jacks, and how they allow the flex and movement to occur. Stabilize the jacks (at the outermost corners of the trailer) with additional support, and all movement disappears.
Picture lifts and even fire trucks with stabilizing systems. Its the jacks that must do all the work...and at the extents of the vehicle. (Not near the center.)
Sorry, but I don't buy any of your reasoning presented and it's great that you're pleased with your results, but I don't think just stabilizing one end of a longer trailer is going to give one satisfactory stabilization results.
The two major causes IMO of movement is the suspension and tires and the length of span of the frame rails. To effectively address these two sources you need support at the tires/suspension point and to reduce the open span of the frame rails. This is why MANY, MANY, here have reported great improvements with putting an additional pair of supports near the axles. I'm not going to go into my diatribe on this subject since it's well documented and a cursory search will give those interested more reading than they probably want.
IMO all that these stiffen gizmos that are at the existing stabilizer positions do is to correct the inherent poor slop in what is there and really don't address the two basic causes of poor trailer stability I have already mentioned. They do demonstrate just how poor most of these stabilization jacks/supports are, but there are IMO much better and cheaper ways to address this issue as I have described in my prior posts on this subject.
Your analogy of the fire trucks is not IMO valid for TT for two reasons. One is often that support is for ladders that necessitate a wider footprint and vehicles have a much heavier frame and are already supported at the corners with the wheels and not in the middle like our TTs.
Larry
