Detailed front cab and short chassis of a mid‑20th century rail inspection speeder, delivered as a single HO 1:87 master STL ideal for HO model railroad layouts, maintenance yard dioramas, or display cases. The model preserves visible front‑end geometry from the reference photo: twin windshields with rubber seals and a center mullion, a pair of low round headlamps and two smaller lamps between the windscreens, a folded sheet‑metal front bumper with mounting brackets and small vertical plates, spoked rail wheels with visible axle and suspension detail on the modeled side, and a recessed paint region for a continuous yellow stripe across the front panel. Roof rear and underside sections that were cropped or occluded in the photo are intentionally left simplified and marked as UNKNOWN rather than fabricated. You receive one HO 1:87 STL (cab + short chassis). The file is optimized for static display and scenic use; it is not a full‑length speeder or motorized running gear. The package includes recommended print orientation and settings: for FDM use a 0.1–0.15 mm layer height with supports under the bumper and axle mounts; for resin printing, 50–75 µm layers with supports under the bumper and wheel spokes yield the best detail. Wheel spokes and small bumper brackets are delicate at this scale—consider reinforcing spokes or printing in resin for long‑term handling. Conversion guidance for other scales is provided (scale multiplier = 87/target denominator). This model is ideal for adding period maintenance interest to your HO layout, creating a focused diorama vignette, or building a small display model for collection. Branding text was removed from geometry; paint and decals are left to the modeler.

Available railroad scales: Z (1:220), N (1:160), HO (1:87.1), S (1:64), O (1:48)

Ready to print digital download in one piece with no assembly needed.

IMPORTANT: You are purchasing the file in the scale selected below.

Miniature Reality Makes practical, print-ready scenery and vehicles so you can economically fill out the background of your layout, diorama, or tabletop without paying centerpiece prices for everything (Our hobbies are dying because the average person can't afford to enjoy them, we want to help fix that). We want your miniature worlds to feel real and full of life - with more variety, more detail in every scene, and prices that won't hold you back.

Miniature Reality Personal-Use License (No AI / No Resale)

• Allowed: personal printing for your own layouts, dioramas, tabletop games, and personal display.
• Not allowed: sharing or distributing the digital files (free or paid), re-uploading to any site, bundling, remix resale, or selling/redistributing printed outputs.
• Not allowed: using the files (or derivatives) to train, fine-tune, test, or feed any AI/ML system (including dataset creation).
• Not allowed: commercial use of any kind without a separate written commercial license from Miniature Reality.
• Enforcement note: digital files may include purchaser-linked identifiers / forensic watermarking to help investigate unauthorized distribution.