SDX FZ-V Blade Spacer for Rotor Alignment - HI0412294 by Hirobo  [HI0412294]

SDX FZ-V Blade Spacer Overview

The Hirobo HI0412294 blade spacer is an accessory for SDX FZ-V rotor assemblies that sets the axial gap between rotor blades. It serves as a passive spacer to maintain uniform blade spacing and support repeatable alignment during assembly and routine servicing.

Fit this spacer where the stock blade stack or blade hub calls for an intermediate shim to correct pitch stack height or reduce lateral play. Its function is mechanical and passive, helping preserve blade geometry which can influence trim and rotor balance in electric or nitro RC helicopter builds.

Typical installation requires disassembling the blade hub to access the blade stack, inserting the spacer into the intended location, and then verifying blade track and pitch symmetry after reassembly. Always inspect alignment with the rotor stationary and at low rotation speed to confirm correct seating and clearance.