This is an RC-scale cross bar specifically listed as HI0403268 for GPH 346 GT assemblies. The part functions as a short lateral brace that preserves chassis geometry and provides a stable reference point during build, inspection, and setup.
Intended role: maintain alignment between structural points, reduce play at the frame junctions, and act as a fixed datum when adjusting linkages or replacing nearby components. Because it is a direct replacement part for the GPH 346 GT family, use it where the original cross bar locates.
Installation notes: fit the cross bar into the existing mounting positions without forcing components, verify frame alignment before final torque, and re-check clearances after the first test hover. Keep fasteners to the original specification and inspect for looseness after initial flights.
Tuning and service tips: use the cross bar as an assembly reference when setting swash or rotor geometry, check for any lateral movement that could affect cyclic response, and replace the part if visible wear appears at the interface points.
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