Hanger 9 Funtana X50 Electric Conversion   Page 2 

By Chris Brew

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The next step in the conversion was to concentrate on the installation of the batteries, it soon became apparent that the planed position would not be far enough forward to Motor instalation complete
obtain the correct C of G , and the batteries would have to be positioned further forward in the fuselage. This was accomplished by removing small web sections of the forward bulkhead either side of the battery tray, I then extended the tray forward to the firewall. Strips of Velcro were attached to the battery tray and in corresponding positions on the batteries to help hold the batteries in position along with the strap that I had fitted to the tray before it was glued into position. I had originally decided to use a separate 4.8v Rx battery, but as the speed controller had a built in UBEC I decided to do away with that in the interest in saving weight.
At this point I roughly assembled the model and checked its C of G only a small amount of weight would have to be added to the nose to achieve the desired position.             With every thing being connected and the basic installation completed the next step was to program the Speed controller, this was accomplished  with the use of a Turnigy BESC Programming Card. This was connected up to the Rx wire from the speed controller and a 4.8v battery is also connected to the card to supply power, the main power supply to the controller is then connected, for this I just connected one 3s Lipo. The card makes programming  so simple the card has a list of menus that can be scrolled through with the press of the up/down button and then the settings can be changed again with the press of the left/right button the settings are shown with an eliminated LED. Once the desired setting are set, press the connect button and the settings are saved. I changed the timing as the default setting is for  2 pole (magnet) motors and mine is a 32 pole. I also choose one of the 15 tunes that can be played when the batteries are connected and the self test has completed. As I will be running two 5000mah batteries in series a connecting harness was then constructed using 10awg silicon wire and 4mm gold bullet connectors.  

Battery Tray            Completted Fuselage

With this done next was to hook up the "Watts Up" meter and check the  figures . I came up with 703w at 32 amps no fear of overloading the speed controller

Turnigy BESC Programming Card            Watts Up meter

With everything now completed the next step was to install the cowl do some final checks insuring that that everything was connected ok and working as it should in preparation of its first electric flight .