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The first production airframe is on the way to me. This is still a prototype stage kit but we will use it to fine tune the production process. All the internals on this model will be identical on the production kits. So I will take the opportunity of this build thread to show you how this model is made of. Here are a few pictures of this exact airframe during the production stage.   The wings:     The main spar up to the landing gear plate is made of aero grade Finnish birch plywood. The main spar is 12...

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I recently received the brand new MK2 Super Phoenix from Aviation Design and wanted to share the buil and flight tests with you.   This plane is my baby and I worked on this new version for about 4 years through two prototypes. The very specific feature about this plane is that the rear fuselage and boom area are CAD designed to create a venturi effect when the engine is at full power and the plane is standing still in the air. This venturi effect creates a flow of air around the rudders and elevator, enabling to control the plane...

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Here is my report after the test flight period.   A previously explained, I went through a complete routine of system tests with the Scorpion before doing the test flight. The first round consisted of ground range tests with the engine OFF then with the engine running. Once I was satisfied with the performance of the Weatronic system, I went for a taxi test. I started with the brakes system power reduced to 70% and did some high speed rejected takeoffs. Ended up reducing the brakes power to 50% to avoid locking the wheels.   All the other controls performed...

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This is the final stage of the Scorpion assembly.   It involves installing and drilling the wing tube, the fins, setting the batteries and installing the receiver. My receiver choice went for the Weatronic micro 12, which I consider as being one of the best device on the market for a great price. It offer invaluable features to me like data logging and advanced flight analysis which enables me to validate the flight tests.   The switch is an Emcotec BIC v2. A nice device that works as a battery backer, voltage regulator and capacity counter. It works pretty much...

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The engine install described in this section is with our Merlin VT-80.   This engine is simply fantastic. It is extremely reliable and features the best thrust to weight to price ratio on the market. Additionally this is one of the most integrated engine. The only accessory that is left outside of the engine is the fuel pump. ECU and valves are located under the inlet cowl. This makes a very clean install and clears up most of the radio tray surface as you will see later. Also the engine setup is extremely simple and is a matter of seconds....

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