Flying Wing - Horten Vc -- Building and Flight Report Day 4

Building and flight report of Horten Vc from Engel Modellbau & Technik
Start	Day 1	Day 2	Day 3	Day 4	Day 5	Day 6	Day 7

Day 4:

The electro engines, in my case the 2 Permax 400 of Multiplex, are procured and ran in in a water bath. For this step I used a power supply, a higher reservoir filled with water in which I dipped the engine. After approximately 3 minutes running time with about 10 Volts and 5 Amps the brushes are really good grinned in and suited well to the collector. Same procedure with the 2nd engine, ready.

After mounting one engine in it's cowling, the engine was provided with a propeller Graupner CAM prop 5" x 5". First measurements resulted in an input current of 10.6 Amps in the case of 8 cells. With assumed realistic 8 volts the input power with approx. 170 watts for 2 engines are not so bad. For a prospective weight of approx. 1350 gram it would be a proper result, isn't it? Let's wait and see!! ;-))

The next step was the mounting of the servos. In my case I used 5-min epoxy resin after sanding the surface of the servos and the servo boxes. The intended double-sided glue tape had not given me the security I wanna have. After glueing, I have made the installation of the servo wires for the ailerons, here with 2mm thread rod, 2 quicklinks, solded on the servo side. No clearance in sight.

After servo implementation I was looking forward to the engine cables. First of all I drilled a hole with a ceramic drill(see picture). In the spar I drilled a hole for the four 2,5 mm² high flexible cables.

Subsequently the engine cowlings are fitted to the wing. For the fixing I used self-tapping screws. At the relevant places the manufacturer has built in a plywood. Good job. It's done very quick. The engine cables are connected to the controller with a high-current plug from Multiplex. The servo wires also get a plug at their ends.

So, that's all for toady.

Result: So far no difficulties.