Hirobo HI0414179 Universal Drive Shaft 34mm / 38.5mm for Eagle Freya  [HI0414179]

Component description and intended use

This is the Hirobo HI0414179 universal shaft, available in two nominal lengths (34mm and 38.5mm) for scale RC helicopter repair and upkeep. It is used where a compact drive or linkage shaft is required to meet limited clearance and geometry constraints.

The shaft functions as a direct mechanical link to pass rotational or oscillating motion between hubs or control linkages while permitting straightforward fitment in tight spaces. When replacing an existing shaft, inspect overall length, spline seating if applicable, and axial play to confirm correct alignment with neighboring gears and bearings.

Fitting advice: install using original retaining parts or suitable secure fasteners, ensure there is no contact with frames or bearings, and verify smooth rotation through the full range. Monitor end-play and any new vibration; minor length differences can change rotor or tail tracking and should be corrected with small linkage tweaks.