Universal Shaft for Tuning - Hirobo HI0414179 L=34,38.5 for Eagle Freya  [HI0414179]

Setup and tuning notes for the shaft

The Hirobo HI0414179 universal shaft is offered in two nominal lengths (34mm and 38.5mm) for use in RC helicopter maintenance and setup. It provides a compact drive or linkage option where short shaft lengths are needed to meet clearance requirements.

Functioning as a direct mechanical link, the shaft transfers rotational or oscillating motion between hubs or linkages while enabling simple installation in cramped assemblies. When fitting a replacement, check overall length, spline or fitment engagement if present, and axial play to ensure proper alignment with nearby gears and bearings.

Practical tips: use original or equivalent retaining fasteners, ensure the shaft is free from contact with frames or bearings, and verify smooth operation through its range. Small differences in effective length affect tracking and vibration, so fine-tune linkage positions after installation to restore optimum control response.