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Radio and Control Linkage Installation — Workshop Build-Along Sopwith Camel Part 17

Radio and Control Linkage Installation — Workshop Build-Along Sopwith Camel Part 17

After finishing up my landing gear and the hinging of the tail surfaces, the next part of this build-along project is the radio gear and the control linkages.

Starting at the front, I installed the engine and then the servos so I could work out the throttle linkage.

Radio and Control Linkage Installation Servos

Here the engine is bolted onto the firewall with the soft-mount bolts and rubber isolators. This spaces the carburetor properly in relation to the servo arms.

Radio and Control Linkage Installation servos

Here’s the bolts and rubber isolators used to attach my Zenoah G-38 to the firewall.

Radio and Control Linkage Installation Zenoah gas engine

Another thing that was fixed was to add some clearance space between the intake venture fitting.

Radio and Control Linkage Installation JR Americas servos

To hold the servos, and the battery pack and the receiver, I installed this equipment tray. It is screwed into place and is removable. You can see the throttle linkage passing through the firewall through the opening for the inset muffler. I am using the HV digital 821 JR servos. Awesome smooth action.

Radio and Control Linkage Installation Zenoah Gas Engine

Here’s the throttle arm connected to the throttle linkage. The large white tiller arm is for the choke.

Radio and Control Linkage Installation JR Americas Servo Ball Link

At the servo end of the linkage and pushrods, I used ball link clevises. I think these are the most secure and most slop free way to transfer servo motion to the control linkages.

Radio Control Linkage Installation JR Americas Servos

Here is the temporary elevator control linkage installation. I am using threaded 4-4o wire rod ends and Robart ball link control horns and clevises for the control linkages.

Radio and Control Linkage Installation JR Americas Servo

Here on the left side you see the rudder and elevator 2 control linkages.

Radio and Control Linkage Installation JR Americas Servo

For the pushrods I used old school 1/4 inch birch dowels. The rod ends  are 4-40 threaded wires from Sullivan Products. I bent the end 90 degrees to match a hole cross drilled through the dowel. I then wrapped the wire with thread and CA glue and then covered the joint with heat shrink tubing. I cut a groove in the end of the dowels for the rod end wire to fit into. Very strong and very easy to do. You can see the JR Americas’ receiver glowing bright blue in the photo. Love it!

Radio and Control Linkage Installation JR Americas Servo

Here’s the receiver I am using. it is the RG738X from JR Americas.

Radio and Control Linkage Installation JR Americas Servo

Transmitter for the Camel is the XG14 from JR Americas. All that’s left is to setup the fuel plumbing and work out the fuel tank installation and the Camel is just about ready for covering! Stay tuned.

Part 18: http://www.modelairplanenews.com/blog/2015/01/09/rotorflow-fuel-tank-installation-workshop-build-along-sopwith-camel-part-18/

Updated: February 12, 2016 — 12:56 PM

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