Stop the shaking!

LarryJM wrote:

JIMNLIN wrote:

Well two of us in this thread alone (Lawrosa and I) and IIRC at least one other report the same level of stability with you being the only one AFAIK that wasn't able to achieve the same results so I'm incline to believe you did something different that what we have done and are recommending here. What amounts of wt did you put on the screw jacks and how did you determine that wt?? I reported what levels I found to be required and can't remember you ever reporting what wts. you found not sufficient or not satisfactory so can you give me a link to the post here where you reported that level of detail since I think I would have definitely commented on it and you are the first AKAIK besides me that have ever even measured these forces so I'm very interested on how you determined these and the details of that experiment.

Larry

Supply you with a link ?? Now that is funny. You know there is no link.
My finding were by trial and error. Just like others have.
Just snug the jacks and turn the crank on the jacks screws a half turn at a time and check the results. At some point the trailer began raise on the suspension and the scissor jack thread became to hard to turn. The 4 jacks never did become steady. These scissor jack were for stabilizing.

Lots of folks report the same thing I found with their scissor jacks on this and other trailering websites so I'm not the only RVer who finds the scissor jacks not up to the job.

The OP can find/buy/barrow a set of scales and try using your weights. If it works for him he's good to go. If it doesn't he can try ideas other offer.

Much depends on how much movement each of us finds acceptable. I have Meniere's disease and require zero movement. My units have to be rock solid. Others don't use any jacks and RV movement/wiggle is fine with them.

Well right there is IMO your WHOLE PROBLEM ... one we are not talking about "Scissors Jacks" which your above post is referring to so all your discussion is not germane to our posts and are only confusing the issue. Just so we are absolutely clear here below is a pic of what we are talking about and what the link Lawrosa provided in his first post in this thread clearly showed which now appears you failed to look at. Some call them "screw-jack stands" or "aluminum jackstands/staking jackstands" etc.



These are "NOT SCISSOR JACKS" or any of the other typical stabilizing jacks found as OEM items found on most trailers today. The jack stands Lawrosa and I are talking about have no moving parts except for the screw portion and more importantly no pivot points. The biggest disadvantage is you do have a somewhat limited range for height adjustment for the run of the mill cheaper versions, but taller ones are available at an increased cost or you can use blocks or something to raise the base just like many recommend with the normal stabilizing jacks so you don't have them over extended.

Also, a critical part to their successful use is proper placement which is "NOT AT THE CORNERS OR NEAR THE FRONT/BACK" of the trailer frame along with using the tongue jack to get the necessary pressure on each stand to be effective. This is sort of a "package deal" and if one leaves out just one item you will not get the results that Lawrosa and I have seen.

Larry

I didn't have any type of scissor jacks on my last TT. I only had these aluminum screw jack stands like in the pic you posted. Along with a cheap X-chock clone I had it made in the shade. No shaking or movement. We did know, almost immediately if one of the jacks had shifted...because the trailer would start moving around again.

Our PUP has BAL jacks now and the trailer moves around...now, I'm thinking about getting some more of these jack stands again.

Thanks!

Jeremiah