Shaft Positioning Collar for RC Helicopter Linkages - Hirobo HI2521110 5 x 7 x 5  [HI2521110]

Shaft positioning component

This Hirobo HI2521110 collar, sized 5 x 7 x 5, is made for mounting on model helicopter shafts to locate and retain linkage components. It helps keep assemblies aligned within the rotor train and tail system by providing a repeatable stop point on the shaft.

To install, slide the collar to the chosen position on the shaft and secure it using the model's existing retention method or a compatible fastener. Remember that this part is intended for positional control rather than as a primary structural element, so ensure it seats correctly to avoid play.

In tuning and setup tasks, collars are practical for setting trim reference points and limiting control travel. Regular checks for seating and correct positioning are recommended before every flight session to ensure consistent control geometry.