[MrNomad]

RV9A: Concerning the joint of the flap actuator that extends from the bottom of the flap motor, to the flap weldment (the bar that operates both flaps), there is a safety wire procedure called out on Plan Page 33, Detail E.

In addition to the safety wire, I assume there is also a washer arrangement as well as the cotter pin. If anyone has notes on the washer arrangement, please post.

WHY? I removed the weldment to clearance the DELRIN blocks which were too tight and placed an unnecessary load on the motor and so I am looking for some directions pertaining to the washers.

Second, my flap motor works great after 360 hours. I am reluctant to take the motor apart and look for grease. My motor was purchased in 2008. Any ideas or leave well enough alone?

Thank you.

 

[rzbill]

For the connection from motor actuator to weldment, my drawing 33 rev 2 (RV-7,9) has the hardware callout as follows:

AN4-10A Bolt
3X AN960-416 Washers
AN365-428 Nut

 

[bruceh]

DWG 33 shows the actuator rod end getting the following hardware:
AN4-10A Bolt
3X AN960-416 Washers
AN365-428 Nut

So you should have bolt, weldment, washer, rod end, washer, weldment, washer, nut.
No cotter pin needed.

A better way to safety the rod end bearing is by drilling a small hole through the rod end. No relative motion between the parts, so the safety wire won't work harden and break. I also put some loctite on the threads.