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Open Roads Forum  >  Travel Trailers  >  General Q&A

 > 2021 No Bo 19.5 bent axle

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Gdetrailer

PA

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Joined: 01/05/2007

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Posted: 10/03/21 10:27am Link  |  Quote  |  Print  |  Notify Moderator

JIMNLIN wrote:

I big rig trailer repair shop can bend the axle back to specs and have you on the road in short order.

Rolling over a curb at 5mph ?
That quite a impact especially if the trailer was going around a corner and with the tires side scrubbing "into" the curb.

One of the two big rig trailer repair shops I've used said they see lots of lead axle/curb side bent wheels and axles....cut tires or just outside rubber cuts on rv trailers.

A bent wheel won't bend a std leaf spring suspension axle. Jack the wheel up enough to roll it by hand. If it wobbles its bent and needs replaced....and have that tire checked internally.


OPs trailer from the manufacturers brochure says it has Torsion axles.

A bent or out of round wheel has the potential to cause considerable stress to a torsion axle at high rates of speed from excess bouncing. But I sort of doubt it was the main cause of the axle damage but may have been a contributing factor..

I seriously doubt any repair shop whether it is a big rig or small mom and pop can fix a torsion axle once the rubber has been damaged which is highly likely what gave out since the rubber in a torsion axle is the weakest link.

Op mentioned it is a single axle so "scrubbing" as you would know from dual or multiple axles does not happen..

I suspect that the axle the OP may be a 3500 lb rated axle, OP should be able to determine that easily by counting the lug bolts holding the wheel on..

5 lugs/bolts will typically be a 3,500 lb axle.

6 lugs/bolts will typically be a 5,000 lb axle..

One would hope that the manufacturer put a 5,000 lb axle under there..

I suspect the OP has 5 bolt rim and that would mean it would be very easy to overload that single axle in a hurry since the manufacturer claims the dry weight is just a couple of pounds below 3,500..

If it is a 3,500 lb axle and with a trailer GVWR rating of just under 5,000 lbs that means all but a couple of cargo pounds must be bore by the hitch in order to not overload the trailer axle..

JIMNLIN

Oklahoma

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Posted: 10/03/21 01:07pm Link  |  Quote  |  Print  |  Notify Moderator

Quote:

OPs trailer from the manufacturers brochure says it has Torsion axles.

A bent or out of round wheel has the potential to cause considerable stress to a torsion axle at high rates of speed from excess bouncing. But I sort of doubt it was the main cause of the axle damage but may have been a contributing factor..

I seriously doubt any repair shop whether it is a big rig or small mom and pop can fix a torsion axle once the rubber has been damaged which is highly likely what gave out since the rubber in a torsion axle is the weakest link.

Op mentioned it is a single axle so "scrubbing" as you would know from dual or multiple axles does not happen..

Both big rig trailer repair shops I mentioned did rubber torsion axle service of all sizes. Torsion axles have other parts that aren't rubber. However the OP didn't say the trailer was squatting more now.
Granted single axle trailer tires don't side scrub going around corners but a single axle tube or the spindle (torsion or std leaf spring axles) can bend when hitting a curb at 5 mpg.
At that speed usually a cut sidewall and bent rim damage from the curb can be normal.

The company I sub contracted through sent a letter to all their subs stating they weren't going to give any more out of warranty service to those who used torsion axles on mostly cargo/enclosed trailers we used as construction job site tool trailers.
I had a 22' tandem enclosed tool trailer I used on my job sites and could not keep the tires from odd wear patterns and premature wear on one side of the tires tread or the other.
Back to the trailer mfg and traded it for the same trailer with std leaf spring suspension. Torsion axles just couldn't stay lined to specs in those conditions.


"good judgment comes from experience, and a lot of that comes from bad judgment" ............ Will Rogers

'03 2500 QC Dodge/Cummins HO 3.73 6 speed manual Jacobs Westach
'97 Park Avanue 28' 5er 11200 two slides

Gdetrailer

PA

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Posted: 10/03/21 02:26pm Link  |  Quote  |  Print  |  Notify Moderator

JIMNLIN wrote:


Both big rig trailer repair shops I mentioned did rubber torsion axle service of all sizes. Torsion axles have other parts that aren't rubber. However the OP didn't say the trailer was squatting more now.
Granted single axle trailer tires don't side scrub going around corners but a single axle tube or the spindle (torsion or std leaf spring axles) can bend when hitting a curb at 5 mpg.
At that speed usually a cut sidewall and bent rim damage from the curb can be normal.



Construction of a Torsion axle does not lend it's self as a good candidate for straightening without some compromise to the axle.

[image]

If the bend is at the stub, one could attempt to straighten or even replace the stub.

If bend is in the arm I suspect there is other additional hidden damage with the solid square steel in the center of the rubber which isn't going to be easy or reliable.

There is a lot of strain/stress where the arm attaches to the square steel, bending it out of shape then trying to bend it back into place can further weaken and distort the material.

You can't use heat anywhere near the rubber, heat will destroy the rubber in the tube so all manipulation must be done cold and doing so does distort the steel as it will never go back exactly the way it was.

I suspect if one contacted say Dexter and asked for technical assistance for their input I highly doubt they would recommend attempting to straighten a torsion axle (and not because they would make a sale)..

Interestingly enough, looking at Dexters Torflex info, their 5 bolt torflex is rated up to 4,100 lbs but that still means up 900 lbs will have to rest on the hitch.. OPs setup is most likely overloaded in spite of what they think..

deltabravo

Spokane, WA

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Posted: 10/06/21 06:52am Link  |  Quote  |  Print  |  Notify Moderator

SavannahChicago67 wrote:

, and the only incident of any kind was rolling over a 4" curb at my campsite, going about 5mph.


That probably cause it.


2009 Silverado 3500HD Dually, D/A, CCLB 4x4 (bought new 8/30/09)
2018 Arctic Fox 992 with an Onan 2500i "quiet" model generator

K_and_I

North Central Ohio

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Posted: 10/07/21 05:16pm Link  |  Quote  |  Print  |  Notify Moderator

JIMNLIN wrote:


Both big rig trailer repair shops I mentioned did rubber torsion axle service of all sizes. Torsion axles have other parts that aren't rubber. However the OP didn't say the trailer was squatting more now.

Jimnlin, would you mind naming the big rig trailer repair shops that will work on torsion axles? I'm a long way from OK, but might work a trip that way if they can work on mine. I have 1 wheel scrubbing a tire, and would like to get it fixed if I can.
Thanks


K_and_I
2011 Rockwood 2604
Nights Camped in 2019: 85
Do we have time for shortcuts?

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