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Old 04-14-2016, 10:41 AM   #1
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Mounting stabilizers to torsion axles ?

I wanting to mount some central stabilizer scissor jacks, near the axles.
Unfortunately that stretch of the frame has a propane line running along one side, making it impossible to mount a jack there.

I had been thinking of mounting them to the front torsion axle main "axle" (clamp-on, no drilling into the axle obviously) ...

however I've read that folks say not to jack up the camper on the axles because it could buckle the axles.
Now obviously I'm not planning on actually lifting the 5er with the stabilizer jacks, just apply enough pressure to stabilize, so I wondered if those in the know about the axles could comment on whether applying enough pressure to just stabilize, rather than lifting (e.g.: for changing tires) would cause an issue ?

Thanks in advance for any insights
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Old 04-14-2016, 12:56 PM   #2
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The issue with jacking on the axle tube is the small contact point on the hollow tube. If you devise some way to spread out the area of contact it should be ok to stabilize with. However, mounting anything to the axle tube is probably going to void any warranty you may have on them.

I think I'd figure out how to move the propane line so you could mount directly to the frame.
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Old 04-14-2016, 01:16 PM   #3
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I used some square aluminum tubing to make a riser for the stab jack to attach to.

Mounted to the jack for testing:


Mounted to the camper, 3/8" hardware:


Clearance around the gas line:
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Old 04-14-2016, 02:00 PM   #4
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Quote:
Originally Posted by Helmsey View Post
I used some square aluminum tubing to make a riser for the stab jack to attach to.
That's an awesome idea
I even have some spare 1" tubing handy
The aluminum was tough enough to withstand the pressure ?
I think the 1" square tube that I have is 16 gauge

Did you do the spacer on both sides of the camper to match, or did you only bother on the one side where it was needed ?
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Old 04-14-2016, 04:27 PM   #5
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Mounting the Jacks to the axles won't do anything to stabilize the trailer. Need to be on the frame to dampen the bounce from the axles. .
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Old 04-14-2016, 04:41 PM   #6
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Mount the jacks on the axle FRAMEWORK tubing.

Herk has a set on his 5er.
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Old 04-14-2016, 04:47 PM   #7
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Quote:
Originally Posted by Dwilcox View Post
Mounting the Jacks to the axles won't do anything to stabilize the trailer. Need to be on the frame to dampen the bounce from the axles. .
With torsion axles, the main "axle" beam is mounted directly to the chassis, and the suspension is independent per wheel. I was suggesting mounting to the fixed beam.



I agree that with "normal" leaf-spring axles putting stabilizers on the axles wouldn't do anything at all.
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Old 04-14-2016, 04:49 PM   #8
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Mount the jacks on the axle FRAMEWORK tubing.

Herk has a set on his 5er.
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Old 04-14-2016, 04:58 PM   #9
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Quote:
Originally Posted by OldCoot View Post
Mount the jacks on the axle FRAMEWORK tubing.

Herk has a set on his 5er.
Thanks for the pics, that looks like almost exactly what I was planning to do, mounting onto the axle cross beam (which I thought has the rubber torsion cords running through it, but perhaps not). I wasn't suggesting touching the torsion arm or spindle.

I just wasn't sure which portion of the torsion axles folks were concerned about crushing when jacking the camper.

Rather than welding onto the jack brackets I was going to get a custom bracket made to either replace, or mount to, the standard flange brackets
I must admit tho' that I do like Helmsey's solution too, since I can avoid having to get anything fabricated (I can cut/drill some aluminum tubing, but don't have any welding equipment unfortunately)
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Old 04-14-2016, 05:00 PM   #10
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Quote:
Originally Posted by leefl View Post
Thanks for the pics, that looks like almost exactly what I was planning to do, mounting onto the axle cross beam (which I thought has the rubber torsion cords running through it, but perhaps not). I wasn't suggesting touching the torsion arm or spindle.

I just wasn't sure which portion of the torsion axles folks were concerned about crushing when jacking the camper.

Rather than welding onto the jack brackets I was going to get a custom bracket made to either replace, or mount to, the standard flange brackets
I must admit tho' that I do like Helmsey's solution too, since I can avoid having to get anything fabricated (I can cut/drill some aluminum tubing, but don't have any welding equipment unfortunately)
DO NOT MOUNT anything to the axle tube itself.
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