Hirobo HI0403251 Tail Gear Box for GPH 346 Helicopter  [HI0403251]

Overview of the tail gearbox for GPH 346

This part, catalogued as Hirobo HI0403251, serves as a replacement tail gear box for the GPH 346 range of RC helicopters. The following text focuses on the component's position in the tail drive, correct fitment for the GPH 346 line, and practical care points for workshop maintenance.

The unit locates and supports the tail gears within the tail boom area, transmitting rotational drive toward the tail rotor. As a replacement accessory, it restores proper gear engagement when the original tail gear box becomes worn or damaged.

Fitting notes: verify the HI0403251 designation against the model's parts list before installation, examine mating gears and bearings for wear while servicing, and verify gear mesh and alignment after the unit is refitted. Avoid assuming it will interchange with other models unless compatibility is explicitly stated by Hirobo.

Performance note: installing a correctly aligned tail gear box reduces play in the tail drive and helps maintain steady tail authority, which contributes to more consistent yaw control and smoother handling of the GPH 346 helicopter.