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Old 02-12-2004 | 10:47 PM
  #319  
Kelly W
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Joined: Jan 2002
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From: Delta, BC, CANADA
Default The guts of the stingray

Hey 2K.

I installed my radio system largely on the left had side of the aircraft and turbine hardware on the right. The receiver battery is right in front of the left fuel tank, but off to the left side. The RX is immediately in front of the battery, with the switch above the two in the forward 1/2 of my access panel.

The ECU is immediately in front of the right side tank but off to the right side to clear the steering tray. Incidentally, you'll need to put some relief cuts in the steering tray if you're using the Jet-Tech fuel cells. The ECU battery (a 6-cell 2200 pack in my case) is positioned in the rear half of the canopy opening on the right side, sunk down to avoid contact with the canopy. The UAT is mounted to the left side of ECU pack.

I split the tray and sunk it down in the rear half of the access hatch to avoid ECU Batt/UAT contact with the canopy, and still leave clearance for the steering cables underneath. This was done with a pair of sheet aluminum brackets with threaded inserts for mounting to the flange around the canopy opening. The front half of my canopy opening has a tray mounting the ECU and RX switches, propane solenoid, and Brake valve. Try to keep the lightweight stuff up front...

As for wiring, I ran the Servo wires and pneumatics down the left side into the rear compartment, the RPM sensor, fuel/gas lines down the center, and all the ECU cables down the right side. My fuel pump is sitting in the unused cavity to the right of the fuel tanks. The retract and brake tanks (separate circuits are fastened down in the nose. I would put the propane tank in the nose, but opted to leave it external to simplify things. Lastly, the antenna is routed directly forward from the RX and has a relatively clear path to the nose of the aircraft where I installed a whip ant. Try to minimize the antenna routing over areas with carbon fiber if possible.

Its a tight fit to say the least, but it can be done without any counter balance weights... I was a bit concerned with mounting all the hardware so close together, but the range has proven to be excellent with my Futaba 8UAP. If that's about as clear as mud, I'll try to dig up some pictures...

Good luck!
Kelly W

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