Edge 540 Manual - Hangar 9

Section 15: Installing the Control LinkagesNote Final adjustments to the elevators will be madelater after completion of control linkage system.CONTINUEDStep 13. The pull-pull linkage consist of 2 cables; each has a.020 music wire, two threaded couplers, two clevis with safetyclips, and two locking nuts. Make two cables.Step 14. Scrape or clear the ends of the wires. Use a solderingiron and silver solder, to solder one of the threaded couplers toone end of the wire. The other end will be done later.Step 18. Locate the threaded rod for the throttle (2 mm). Withthe engine mounted to the fuselage, mark where the throttlepushrod will exit the firewall. The linkage to the carburetor armshould be free of any binding during operation. Once the throttlepushrod position has been determined and marked, use a 1/8''drill bit to make the opening in the firewall. Be sure to removethe fuel tank before drilling.Note: It’s important to bend over approximately 3/8'' ofthe music wire onto itself at its ends using pliers.This will give a more secure mechanical solderjoint as the silver solder has more to “grab onto”than a straight wire end.Step 15. After the solder has cooled, check the security of thesolder connection. Attach a locking nut and clevis onto thethreaded coupler. Connect the clevis to the outer hole of therudder control horn and thread the other end through thefuselage. Repeat the process for the other link. Trial fit the pullpulllinkage to the servo arm of the rudder servo, compensatingfor the fact there will be a threaded coupler and clevis attached.Step 19. Begin the installation of the throttle linkage byattaching the nylon clevis to the threaded end of the rod(10 turns). Thread the throttle linkage through the firewall andattach the nylon clevis to the engine throttle control arm.Step 16. Once you are satisfied with the length, silver solderthe threaded coupler to the music wire using the same procedureas outlined in step 15. After the solder has cooled, again checkthe security of the joint. Repeat the process for the other link.Step 17. Once both pull-pull linkages have been constructed,connect to the rudder servo control horns outer holes. Finaladjustments can be made at either or both ends of the linkageby screwing in or out the clevis as needed. Hangar 9 offers avaritey of heavy duty, gold anodized machined aluminm servoarms for use with 3D flying.36