Helicopter Linkage Needle Pin 3 x 21.8 Hirobo HI2509006  [HI2509006]

HIROBO 2509-006 NEEDLE PIN 3 X 21.8 #2509006
Price:
AUD$5.06
Brand:
Hirobo
Model:
HI2509006
GTIN:
4512895113575
Condition:
Brand New
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Helicopter linkage needle pin

The Hirobo HI2509006 needle pin is a 3 x 21.8 retention pin intended for model helicopter component assemblies where that size is required. It secures linkage ends, mounting tabs, and other small fittings to maintain alignment and prevent axial movement during operation.

Installation notes: measure the receiving bore and confirm clearance before pressing the pin in; ensure it seats fully without binding and lock it with the recommended retaining method for your setup, such as a circlip or set screw. Forcing an oversized pin into a tight bore can damage both parts.

Tuning and inspection: check the pin periodically for straightness, surface defects, or loosening, especially in control linkages where any play will influence handling. Replace any pin that shows visible damage rather than attempting repairs.

How does this pin affect flight control precision?

A correctly sized and undamaged pin keeps linkages tight and repeatable; worn or bent pins introduce slop that can degrade control responsiveness. Use fresh pins where precision matters.

Which retaining option should I use for high-vibration setups?

For high vibration environments, a circlip on a grooved shaft or a properly torqued set screw with threadlocker are reliable. Ensure the chosen retainer is compatible with the mounting hardware.

What maintenance schedule is recommended?

Inspect pins after any hard landings or every few flying sessions, depending on usage intensity. Replace at the first sign of distortion, corrosion, or scoring to maintain safe operation.

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