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Trailer Torsion Axle Mounting

Old 10-05-2019, 06:28 PM
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Default Trailer Torsion Axle Mounting

Im replacing the torsion axles on my trailer. The old ones mounted with u-bolts over the aluminum I-beams. A trailer dealer told me to drill four holes thru the bottom of the I-beam and bolt the axle mounting directly to the beam, and he showed me a couple of new trailers with that arrangement. The new axle bolt pattern is not lining up perfectly for the existing u-bolts, so I'm considering drilling the I-beam. However, it seems to me that putting holes in the beam would weaken it, although the axle mounting pad is large and fully supports the beam. What say you trailer experts?

Last edited by phillyg; 10-05-2019 at 06:42 PM.
Old 10-06-2019, 04:08 AM
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I'm no expert, but that's how the axles on my aluminum trailer are mounted.
Old 10-06-2019, 04:43 AM
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You'll be fine. The holes won't hurt anything.

Very important to make sure you mount the axle square to the trailer. Measure three times before drilling.
Old 10-06-2019, 05:02 AM
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Mine are bolted to the flange. 12k miles and no issues.
Old 10-06-2019, 05:18 AM
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Drill it!
Old 10-06-2019, 07:21 AM
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Literally just finished replacing the axles on my tri axle, I went from torsion to torsion, but different mounting so more holes drilled. Measure from the rear of the I beam to each spindle forward on each side, then when mounting make sure your new spindles are matched with the originals. Make sure you're spacing is the same between each. The more measurements the better, make 100% that they are square and true or you'll eat tires.
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Old 10-06-2019, 05:09 PM
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Okay, thanks. Drilling tomorrow.
Old 10-06-2019, 05:25 PM
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My new torsion axle did not come with a rubber mounting pad to keep water from sitting between the dissimulator metals where the Galvanized Steel sits on the Aluminum I Beam... I cut some plastic flooring strips to prevent the contact, hopefully to avoid Pitting the Aluminum I Beam...
Old 10-06-2019, 06:51 PM
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Mine is drilled.....pad between axle and frame....

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