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Custom Tandem Axle Trailer

When a growing New Zealand business came to us needing a trailer tough enough to handle remote locations and daily use, our team at Alted Engineering set out to design and deliver a solution that ticked every box. The result: a custom-built, 3.6m tandem axle enclosed trailer designed with durability, practicality, and longevity at its core.

Built for Purpose

Operating in remote areas means equipment has to be reliable, safe, and versatile. This build combines heavy-duty construction with thoughtful details that make it ready for tough conditions.

Designed in SolidWorks, Bennet Gage-Brown draws on more than 20 years of engineering design experience in the transport industry. His typical projects involve heavy transport equipment, and bringing this level of expertise back into a trailer build ensures the same strength, safety, and performance standards are applied on a smaller scale.

Dimensions

  • 2200mm wide external

  • 1680mm wide between the internal mud guards

  • 2000mm internal height (floor to underside of rear door frame)

  • 3610mm internal length

  • Rear door width: 1680mm

  • Side door: 630mm wide × 1900mm high

Running Gear

  • 195 R14C wheels with galvanised painted 2K black finish (#blackwheelsmatter)

  • One spare wheel mounted inside the trailer

  • 1-7/8” 2500kg manual override coupling with hydraulic disc brakes on the front axle

  • 2500kg rated axles and suspension

  • Heavy-duty manual wind-down jockey wheel

  • LED side marker lights (front upper corners)

  • LED taillights with number plate light

Chassis & Body

  • All steel is Duragalv pre-galvanised

  • Welds ground back for strength and treated with epoxy zinc-rich paint

  • 3mm steel folded internal mudguards (primed and painted with a quality system)

  • Fixed front bench with raised lip

  • Multiple tie-down locations throughout

  • 19mm H3 flooring plywood (no non-treated europly)

  • Cladding in 4mm white ACM panel

  • 30x30x3 alloy flashings on all external corners

  • Side-opening window with mesh screen (LHS only)

  • Rotary roof vent

  • Alloy lockable toolbox mounted to drawbar

  • Alloy tread plate across the front (1200mm high) for stone protection

Electrical

  • Two internal low-height LED lights

  • Lights switched inside the rear door (RHS)

  • Light switch panel includes USB charging port, 12V DC lighter socket, and junction box

  • Internal electrics wired to fused tow vehicle battery with extra cores for future use

Ready for Work

This trailer was designed to give our client confidence that their gear is protected, secure, and powered up wherever the job takes them. With robust running gear, a strong steel chassis, and practical features built in, it’s an investment that will stand the test of time.

Need a trailer built to your exact requirements?
At Alted Engineering, we design and deliver custom trailers and builds that work as hard as you do. Get in touch today to talk about your project.

Custom 3.6m tandem axle enclosed trailer build by Alted Engineering
Lining the custom 3.6m tandem axle enclosed trailer Alted Engineering
Custom tandem axle enclosed trailer build by Alted Engineering
Side door access custom 3.6m tandem axle enclosed trailer
Opening rear door custom tandem axle enclosed trailer build by Alted Engineering
Electronics in custom tandem axle enclosed trailer build by Alted Engineering