Hirobo HI0412294 SDX FZ-V Blade Spacer for rotor blade alignment  [HI0412294]

Blade spacer for SDX FZ-V

This Hirobo HI0412294 blade spacer is an RC-scale accessory intended to control the gap and axial position between rotor blades on SDX FZ-V designation rotor assemblies. The part functions as a simple spacer element that helps preserve consistent blade spacing and repeatable blade alignment during assembly and routine maintenance.

Use this spacer where the stock blade stack or blade hub requires an intermediate shim to correct blade pitch stack height or lateral play. The part's role is primarily mechanical and passive, contributing to predictable blade geometry which can affect trim and rotor balance in scale electric or nitro RC helicopter setups.

Installation typically involves disassembling the blade hub to access the blade stack, inserting the spacer into the intended location, and verifying blade track and pitch symmetry after reassembly. Inspect alignment with the rotor stationary and under slow rotation before normal operation to confirm correct seating and clearance.