Hirobo EMBLA SZM2 Radius Block HI0304118  [HI0304118]

What the EMBLA SZM2 radius block does

This radius block is an RC-scale spare produced for the EMBLA SZM2 helicopter family. It acts as a linkage interface that positions and controls the motion trajectory of rotor linkages within collective and tail mechanisms.

Fitment and checks: make sure alignment is correct and linkage movement is free before completing assembly, choose the proper fasteners and apply thread locking suitable for model screws, and check there is no binding through the full range. The part is intended for standard maintenance and replacement on model helicopters.

Tuning role: replacing a worn radius block with this item restores the designed mechanical geometry and supports consistent trim during setup and flight checks. Inspect adjacent linkages and bearings for wear when renewing this component.