53 FOOT DRY VAN — SKETCHFAB MODEL SOURCE

Truck Trailer FREE by NLM
https://sketchfab.com/3d-models/truck-trailer-free-575958a53e3d4e9f8bcfb1ee2cef67bf
https://sketchfab.com/NLM-Group
License: Creative Commons Attribution 4.0
https://creativecommons.org/licenses/by/4.0/
Downloaded by the user from Sketchfab. No paid asset or extracted viewer mesh.

This is a detailed third-party model replacing the earlier procedural trailer.
The original model's nominal length was not specified by the author. Its body
was adapted to 53 ft (16.1544 m), 102 in (2.5908 m) width and 13 ft 6 in
(4.1148 m) roof height. It is not represented as exact manufacturer CAD.

Original detailed panel hardware, suspension, landing gear, rear doors,
tandem wheels and tire textures retained. Redundant subdivision optimized;
static meshes batched by material. Original 637,398 triangles become 182,765
site triangles and 21 mesh draws, plus two painted company-identity graphics.
The original Tuff Truck Supplies shield is unchanged; typography uses the
same bundled typefaces as the website. Branding receives the scene lighting.

Four dual-wheel groups rotate rigidly by absolute scroll travel. No source
animation autoplay, timers or idle motion. Landing feet are in raised travel
position. Tire centers sit at their radius; source kingpin aligns with the
VNL fifth wheel at x0,z-2.678, target skid underside y1.261723. The actual
prepared skid surface measures y1.261838, within 0.12 mm of that target.

The trailer body remains 53 ft long with its front at z-1.68 and rear at
z-17.8344. Exterior hardware extends slightly beyond those body landmarks.
Both rear axles move rearward by 0.10 m with the body, to z-14.8144 and
z-16.0594. Their y0.503 centers, 0.503 m radii and original local wheel
geometry stay unchanged. Tire contact is within 0.22 mm of the ground.

The coupling landmark was lowered from y1.375 to match the truck's uniform
presentation scale of 0.922039325. The trailer's ground, wheel-center and
4.1148 m roof landmarks stay fixed; the entire trailer was not raised or
lowered. Its body coordinates were recalibrated between those landmarks.
This is a disclosed artist-model adaptation, not an OEM engineering model.

Detailed preparation metadata, license, and dimensional notes are supplied
in assets/trailer-nlm/source.json and assets/trailer-nlm/license.txt.