Blade Spacer 3T (3mm) for Eagle/Freya/EX/SX - Hirobo HI0404612  [HI0404612]

Rotor Stack Spacer Details

This Hirobo HI0404612 blade spacer is an RC-scale rotor component intended to set or restore the axial gap in a blade stack for compatible helicopter platforms. The part is specified in the product name as 3T (3mm), and it is listed among common parts for Eagle/Freya/EX/SX models, so use it where those model families accept a standard spacer of this thickness.

Functionally, a blade spacer controls the axial position of the blade relative to the hub and grips, which affects pitch geometry and rotor balance. In practice the spacer is a passive component in the blade stack: it sits between mating surfaces to keep a consistent separation under load and to reduce unwanted lateral play in the rotor assembly.

Installation notes: verify fit against your hub and blade grip surfaces before final assembly, confirm there is no binding or excessive preload, and inspect for wear or distortion during routine maintenance. As an RC accessory, it is intended for model helicopter rotor assembly and tuning tasks rather than full-system modifications.