A1A chassis and bogies for G8 / G12 locomotives - 12mm gauge (HO scale) - 3 Foot 6 Models

A1A chassis with 12mm gauge bogies, for HO scale (also known as HOnz, HOn3.5). Pre-orders - expected availability Q1 2026 Chassis comes fully assembled. Features: Accurately sized bogies, A-1-A arrangement (two powered axles, one “ideler") Motor with dual flywheel 3D-printed alumin