January 25, 2020

Pitch Servo Connector Issue

As I was laying out the wiring to the pitch servo, I realized there is a slight issue. Can you spot the problem in the next picture? As you can see in that picture, there’s not much room between the autopilot connector and the neighboring rib, meaning the wires coming …

Bundling Wires with Lacing Cord

It’s a minor detail that you don’t usually see, but I like the finished look of neatly-bundled wire harnesses. While zip ties are convenient, they can damage the wire over time – under vibration, the edge of the zip tie chafes the Tefzel jacket, and eventually can cause intermittent connections, …

Main Wiring Harness

I finished adding all the needed wires to the main electrical harness. Now, I can begin adding terminals to the wire ends, and for some of the connectors, putting the terminals into the connectors. I have to leave some connectors off until the harness is installed in the fuselage because …

More Wire Routing

On Sunday I continued running wires for the fuselage electronics, in particular the autopilot servos and the magnetometer. I also gave some thought about how to secure the wires and created some small brackets so that I could use cushioned clamps inside the center tunnel. The brackets are made from …

Amphenol Duramate Connectors

During last week’s shopping bonanza, I bought electrical connectors to use for the wing wiring. I decided to go with a product made by Amphenol called Duramate – they are a series of circular connectors available in several sizes and pin configurations that are environmentally sealed, IP67-rated, vibration-resistant, and reasonably …