Hirobo HI2509012 Parallel Pin 2 x 11.6 for RC Helicopter Linkages  [HI2509012]

Precision parallel pin for rotor linkages

This is an RC-scale parallel pin listed as part 2509-012 and referenced by model HI2509012, offered as a spare for general helicopter parts and repairs. The listing identifies the pin by the size "2 x 11.6", which is the key dimension to check against your parts diagram or service sheet.

In use the pin functions as a simple mechanical locator in linkage assemblies and at small pivot points on helicopter rotor systems. It is intended to replace worn or missing pins with the same "2 x 11.6" size to restore correct linkage geometry where parallel pins are specified.

Fitting is straightforward on RC models: align the linkage or bracket hole with the pin, slide the pin into place, and secure it with the original retainer or clip from your model. After fitting, confirm there is no excessive lateral play and recheck rotor tracking to ensure safe operation.

During setup and maintenance the pin's role is small but important: choosing the correct pin helps preserve linkage geometry, which influences cyclic and tail response. When swapping pins, clean mating holes and inspect adjacent parts for wear that might warrant replacement.