RV.Net Open Roads Forum: Travel Trailers: Levelling with Scissor Jacks

RV Blog

  |  

RV Sales

  |  

Campgrounds

  |  

RV Parks

  |  

RV Club

  |  

RV Buyers Guide

  |  

Roadside Assistance

  |  

Extended Service Plan

  |  

RV Travel Assistance

  |  

RV Credit Card

  |  

RV Loans

Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Help and Support  |  Contact

Search:   Advanced Search

Search only in Travel Trailers

Open Roads Forum  >  Travel Trailers  >  Modifications and Accessories

 > Levelling with Scissor Jacks

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 6  
Next
Sponsored By:
Nvr2loud

Canada

Senior Member

Joined: 06/19/2012

View Profile


Offline
Posted: 07/11/12 07:44am Link  |  Quote  |  Print  |  Notify Moderator

I know I'm going to get flamed, but I replaced the (4) OEM single arm stabilizers on my Trail Cruiser 30 ft travel trailer with (6) 24" scissor jacks. I experimented with lifting excessive weight with the scissor jacks and found that it is easy to lift the trailer wheels off the ground without frame bending.

During testing I have gone to the extreme and used (1) jack on the back corner to lift the wheels right off the ground. I first used blocking on the front corner and took the weight off the tonque jack to prevent damage to that jack. Then I used a cheater bar and cranked that one scissor up until the wheels had enough space below them to slide a 2x6 board under. The trailer wasn't even visibly twisted. Both doors opened and closed without an issue, the only visible sign inside the trailer was the bathroom door did not latch closed unless I pulled upwards on it slightly.

Keeping in mind that I'm just testing, I used all six scissor jacks together and picked the entire trailer up off the wheels and tongue jack without a problem. It is perfectly straight and level without bending.

My first two trips out camping with the new setup went perfectly. I used three jacks on the low side to level, then used the 3 jacks on the high side to stabilize. On one site I needed to life about 3 inches to level, and the weight was nearly off the wheels, so I jacked slightly higher and put a 1x6 board under the wheels and lowered back down. I am confident that with care, and proper placement, the scissor jacks can be used for lifting.

I would not lift again like the testing phase, I know the trailer is not designed to be lifted from one rear corner and supported only by a stand on the front corner and the opposing wheels, but it did just fine during the test.

Terryallan

Foothills NC

Senior Member

Joined: 06/28/2004

View Profile


Offline
Posted: 07/11/12 08:00am Link  |  Quote  |  Print  |  Notify Moderator

Do what you want. It's your TT. Just be aware the manufacturer tells you NOT to lift the trailer with the stabilizers. that is what they are, not lifting jacks. Prolly with good reason.


Terry & Shay
Coachman Apex 288BH.
04 F150, 5.4, Lariat SuperCab
Lazy Campers


jetboater454

Camping or home

Senior Member

Joined: 07/21/2009

View Profile






Posted: 07/11/12 08:04am Link  |  Quote  |  Print  |  Notify Moderator

Want to see if it twists the frame? Try to open the door as you jack it up.


Other half is camping with the angels,Riding alone for now.

2008 3500 Dodge Ram CTD dually 4X4 SOLD
2007 Gulfstream Endura Max 40 SOLD
2001 Polaris Ranger 4X4 SOLD
Harley Dyna Lowrider.

Mod Pics

Nvr2loud

Canada

Senior Member

Joined: 06/19/2012

View Profile


Offline
Posted: 07/11/12 08:18am Link  |  Quote  |  Print  |  Notify Moderator

jetboater454 wrote:

Want to see if it twists the frame? Try to open the door as you jack it up.


I did, while I had only (1)jack lifting very high. Trailer was lifted on the back left corner. Supported only by the jack, the blocking on the front left corner, and the right side wheels. I would consider a lift like that to be the 'highest' pressure possible on the frame. I was lifting from approximately 8 feet behind the axles, both doors still functioned just fine. I have a lightweight trailer with the aluminum I-beam frame, so it is 'weak' compared to a box frame trailer. I did this more for information / curiousity. I like to push things to the limit to see what happens.

Before installing the scissor jacks, I lifted a little with the stabilizer one arm jacks, held the pressure until I walked around inside the trailer... then 'snap' and one failed. So for everyone who does not believe how weak the one armed stabilizers actually are, I barely lifed with it, I would have considered in just above 'fine levelling' I hardly lifed more then I would after levelling with boards and then lowering the stabilizers and slightly lifting just to put pressure down.

The idea of the scissor jacks for me is to lift up to about 2 inches, not lift the wheels. I still carry boards for heavy levelling, then use the scissors for light levelling. I lower two stabilizers after all the levelling is done and the trailer is nearly solid.

Nvr2loud

Canada

Senior Member

Joined: 06/19/2012

View Profile


Offline
Posted: 07/11/12 08:22am Link  |  Quote  |  Print  |  Notify Moderator

Terryallan wrote:

Do what you want. It's your TT. Just be aware the manufacturer tells you NOT to lift the trailer with the stabilizers. that is what they are, not lifting jacks. Prolly with good reason.


I'm talking about aftermarket scissor jacks listed as levelling / stabilizing. The manufacturer simply states not to lift excessive weight with jacks. For the testing, I absolutly lifted excessive weight, but only to see how an extreme lift would affect the trailer. Now I'm confident that during normal use, the slight to moderate lift I apply to level will not damage the trailer.

Similar to testing the towing limits. I have pulled the trailer up to 130 kph to see how it reacts to wind and drag, and passing trucks. It was fairly stable, but I would not want to tow like that all the time. Now I typically tow 90 - 100 kph but I'm confident it can handle the higher speeds, so the lower speeds are easy

five'er

Canada

Senior Member

Joined: 09/25/2006

View Profile



Posted: 07/11/12 08:34am Link  |  Quote  |  Print  |  Notify Moderator

I don't see a huge deal here.. you replaced the oem with stronger jacks and more of them. As others said, it's your RV, do as you wish. My first thoughts were on how seasonal RV's are often lifted off the wheels and placed on blocks so with that reasoning in mind and the number of those I've seen I'd jump to the conclusion that with the right jacks in the right positions it shouldn't be a problem.

APT

SE Michigan

Senior Member

Joined: 06/09/2010

View Profile



Posted: 07/11/12 08:52am Link  |  Quote  |  Print  |  Notify Moderator

While the jacks may be stronger to actually lift, the frame and body of the RV may not be.


A & A parents of DD 2005, DS1 2007, DS2 2009
2011 Suburban 2500 6.0L 3.73 pulling 2011 Heartland North Trail 28BRS
2012 VW Passat TDI

Billieg2

Lake Wales Fl

Senior Member

Joined: 02/28/2011

View Profile



Good Sam RV Club Member

Offline
Posted: 07/11/12 08:55am Link  |  Quote  |  Print  |  Notify Moderator

I got tired of carrying boards so I bought 4 - 7,500# scissor jacks for my 5th wheel and they work great to lift the low side up a few inches. Welded them to the 16" frame. The cheap ones that come with the unit are to stabilize it only but these are for lifting.

They make auto lifts to level TT's and 5th wheels so what is different about scissor jacks except they are manual.


In my life I've spent my money on women, booze, Harleys, guitars and traveling, the rest I just wasted...

2007 Ford F-350 diesel/dually & Sunnybrook Titan KSRV 39-1 Toy hauler 5th wheel hauling my custom Harley


M GO BLUE

Southgate, MI

Senior Member

Joined: 01/29/2001

View Profile


Offline
Posted: 07/11/12 08:57am Link  |  Quote  |  Print  |  Notify Moderator

Scissors jacks are used to help stabilize your TT AND SHOULD NEVER BE USED TO LEVEL...




2005 Chevy Silverado 3500 dually CC/LB Duramax/Allison
2008 Jayco Designer 35RLTS fifth wheel
Onan 5500W Marquis Gold gas generator (HGJAB - 1038D)

coolbreeze01

Redding, Ca

Senior Member

Joined: 08/24/2006

View Profile



Posted: 07/11/12 08:58am Link  |  Quote  |  Print  |  Notify Moderator

Some dig holes, some use wood, you added jacks.......what ever levels your tent


2008 Dodge 3500 With a Really Strong Tractor Motor...........
LB, SRW, 4X4, 6-Speed Auto, 3.73, Prodigy P3, Blue Ox Sway Pro........
2014 Sandsport 26FBSL

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 6  
Next

Open Roads Forum  >  Travel Trailers  >  Modifications and Accessories

 > Levelling with Scissor Jacks
Search:   Advanced Search

Search only in Travel Trailers


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:

© 2014 RV.Net | Terms & Conditions | PRIVACY POLICY | YOUR PRIVACY RIGHTS