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First Gear Komatsu HD605-8 vs. 830E-AC: Choosing a Haul-Truck Model
Choose the HD605-8 for the smaller of these two 1:50 haul-truck displays, or the 830E-AC when you have room for a substantially wider mining-truck model. Both have poseable dumping features, but the difference in shelf width is especially important: the quoted 830E-AC width is 6.75 inches versus 3.5 inches for the HD605-8.
Compare First Gear Komatsu haul trucks
HD605-8: a more compact haul-truck footprint
The HD605-8, 50-3387, is approximately 8 inches long, 3.5 inches wide and 3.75 inches high. Choose it when this machine is the intended subject or when the larger 830E-AC would dominate the available space.
The documented features include front-wheel steering, wheel chocks, metal rails and stairs, and a dump body that can lock in a raised position. That last feature matters for someone who wants a parked maintenance or raised-bed presentation.
The catalog height is not a confirmed maximum height with the body raised. Establish the desired pose before buying a close-fitting cover, and use the intended support mechanism rather than improvising a prop against delicate details.
830E-AC: a wider, larger display
The 830E-AC, 50-3273, measures approximately 11 inches long, 6.75 inches wide and 5.25 inches high. It is larger than the HD605 in every quoted direction despite sharing the 1:50 scale.
Its listing describes a tilting dump body, poseable front wheels, wheel chocks, metal railings and stairs, and sprung rear suspension. Choose it for the specific 830E-AC subject and the more substantial miniature, not because size automatically proves a higher quality grade.
Sprung suspension is a model feature, not a published load rating. No capacity to carry real gravel or other heavy material is established, and the AC designation does not mean a powered miniature drive is included.
Check the shelf opening, not just the shelf length
The 830E-AC's quoted width is almost twice the HD605's. A long shelf can still be too shallow for it when the truck faces sideways, or too narrow between supports when displayed nose-out.
Use a paper outline for the selected model and add handling room around stairs, rails and mirrors. Measure the usable interior of a cover and the opening through which the model must pass. A box that stores the truck safely is not necessarily the display enclosure you want.
Choose a dumping pose deliberately
A raised body changes both height and visual balance. Leave clearance above the bed and behind the truck, keep the model on a stable surface and follow the supplied instructions for support and movement.
A parked pose emphasizes the truck's overall proportions and usually requires less vertical clearance. A raised-bed pose shows more of the chassis and body structure but needs its own space assessment. Neither pose calls for forcing the hinges to match a photograph.
Adding another machine to the scene
The 1:50 Komatsu WA500-7 loader, 50-3262, offers a separate loader subject with adjustable arms and bucket. A shared scale makes proportions more consistent, but it does not prove that its bucket reaches either truck's body in a realistic loading pose.
Measure reach and clearance before planning a loading scene. For a collection display without a simulated loading operation, the two machine types can occupy separate positions with no claimed physical compatibility.
Which truck should you buy?
Choose the HD605-8 for its smaller footprint and documented raised-bed lock. Choose the 830E-AC for that larger machine and its listed suspension details. Check the exact model, intended pose and available width before comparing current prices.
