Edge 540 Manual - Hangar 9

Section 4: Installing the Aileron LinkagesParts Needed• Wing assembly from Section 2• Left control horn• Right (reversed) control horn• Plastic plate (2)• Screws (8)• Short (3-3/4” x 4-40) threaded rod (both ends)(2)• 4/40 metal clevis (4)• Locking clips for clevis (4)• 4/40 nuts (4)• Heavy duty servo arm (JRPA215) (Optional for 3-D throws)Tools and Adhesives Needed• Phillips screwdriver• Drill• Drill bits: 1/16”, 3/32”• Felt-tipped pen or pencil• Moto-tool (optional)Step 1. For this assembly, you will be using two 3-3/4”threaded rods, four clevis, four 4-40 nuts, and a regular and areverse metal control horn. Use the 4-40 nuts as locking devicesto keep the clevis from turning. There is also a locking clip thatkeeps the clevis from opening. The reverse control horn has an“R” marked on its base; the standard horn has no marking. Forillustration purposes, we will describe the installation of theaileron linkage on the right wing panel (bottom).Step 4. The servo arm should be positioned so it is pointing tothe wing tip. When installing the control horn, the holes in thecontrol horns (where the pushrod attaches) should be in linewith the control surface hinge line.Note: If using 3-D throws, use a heavy duty servo arm(JRPA215 for JR Servos.)Step 2. Thread a 4-40 nut and clevis on each end of thethreaded rod. Next locate the standard horn. The link assemblygoes on the 2nd outer hole from the end as shown below.Step 5. Once you are satisfied with the metal control hornlocation (it should be a straight line from the servo arm to thehorn), mark the location of the screw holes with a felt-tipped penor pencil. The hinge line and the control rod should be at90-degree angle to achieve proper mechanical efficiency.Step 3. The metal clevis will attach to the servo arm that pointsto the wing tip. If you wish, the other three arms can be trimmedoff. To establish the position of each of the clevis on the threadedrod, trial fit the horn and linkage to the servo arm. Adjustmentsin length are made by screwing one or both clevises in or out.14