Helicopter Mixing Arm for Eagle/Freya/EX/SX - Hirobo HI0404001  [HI0404001]

Helicopter mixing arm compatible with Hirobo common parts

This mixing arm is an RC-scale replacement listed with Hirobo common helicopter parts for the Eagle, Freya, EX and SX ranges. It provides the mechanical linkage point that blends servo outputs for pitch mixing and tail control on model helicopters.

Choose this part when you need to restore original linkage geometry or replace a damaged mixing arm. The component uses the standard mounting configuration across the Hirobo Eagle/Freya/EX/SX common parts group, so ensure your airframe employs those mounts before purchasing.

Fitment procedure: clear the swashplate and detach servo linkages to remove the old arm, transfer any bearings or locating pins if required, then fit the replacement and inspect movement for binding or excessive play across the full collective and tail travel. After reassembly, check neutral pitch and reset transmitter mixes and endpoints as necessary.

Tuning perspective: treat the mixing arm as a fixed mechanical element; adjust control balance and feel through transmitter mixing adjustments or by altering outer linkage lengths rather than altering the arm itself.