Dragonfly Fuel System

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JPG/GIF Still Photos
Fuel System Diagram Jan2005.jpg
Fuel System Diagram Jan2005.jpg
FuelDoorClosed.jpg
FuelDoorClosed.jpg
FuelDoorOpen.jpg
FuelDoorOpen.jpg
Header1.jpg
Nate Rambo built this header and then described it in DBFN number 66. It's pretty close to the one described in the article, but it has 2 vent tubes.
Header2.jpg
Header2.jpg
Header3.jpg
Header3.jpg
Header4.jpg
Header4.jpg
Header5.jpg
Header5.jpg
HeaderFuelLevelSensor.jpg
This is an on-off level detector that tells me when the tank is full. I will wire this to the feeder pump so the pump will not try to overflow the tank when it is already full.
IMG_0383.jpg
Shot of LH bottom of firewall showing space where gascolator will be mounted. Space to right of carb will probably be where I run the aluminum tubing between gascolator on this side and Facet pump (not shown) on the other side of the carb
IMG_0390.jpg
Lower left of firewall showing throttle cable and bulkhead connector
IMG_0395a.jpg
Fram filter and Facet pump with steel braided hoses hooked up. Header tank on left. Scott brake cylinder and Strong pitch trim motor also visible at top.
IMG_0396.jpg
Various Earl's fittings on the removable header tank
IMG_0397.jpg
Fuel inlet with an Earl's Tube-Mate Auto-Fit tubing hose end being mocked up (hose not connected yet)
IMG_0401.jpg
Closeup of Fram HPG-1 with its 3/8NPT male-to-AN male adapter attached to an AN female-to-1/8NPT into the Facet pump. Note rubber vibration mount (from Wicks) of the Facet also positions fittings properly.
IMG_0404.jpg
Various Earl's fittings
IMG_0408.jpg
Trial fitting the carb and the Facet backup pump used to override the gravity feed if necessary
IMG_0409.jpg
Left to right, Facet pump, fuel pressure sensor, carb, gascolator.
IMG_0412.jpg
View of the space between left half of firewall and canard lift bulkhead showing lower firewall angle, throttle cable and fuel tubing to bulkhead fitting
IMG_0415.jpg
Fuel will flow from the bulkhead connector (upper right) and a 90 degree adapter to the gascolator (center), then out of the gascolator to the left through a 3/8 aluminum tubing to the Facet backup pump to the left of the carb
IMG_0416.jpg
Another view of the gascolator and bulkhead fitting before the 90 degree adapter is installed
IMG_0418.jpg
Fuel flows from Facet pump at bottom left through a 150 degree full flow hose end to the carb (top center) past a VDO fuel pressure sensor
IMG_0418a.jpg
Fuel pump moved above the motor mount rail to make room for exhaust downpipe.
IMG_0419.jpg
View down onto header showing hose from tank outlet (top right) running to the left to the top of the fuel shutoff valve. Aluminum hardline visible at left running forward to firewall bulkhead connector.
IMG_0420.jpg
Closeup of fuel shutoff valve before fiberglass compartment has been installed. Also there will be a cutout right where the handle is, so you can actually reach the handle!
IMG_0421.jpg
Overview of main tank and header plumbing
IMG_0430.jpg
You can see the carb temperature probe at the left, with the white wires coming off it. Also barely visible at right the fuel pressure sensor adapter and VDO sensor between the steel braided hose and the fuel inlet on the carb.
IMG_0432.jpg
IMG_0432.jpg
IMG_0651.jpg
Cold side of firewall where Fram HPG-1 filter and Facet pump are located to pump fuel from Main tank to Header tank via steel braided hoses
IMG_1030.jpg
IMG_1030.jpg
MainTankFuelPickup.jpg
MainTankFuelPickup.jpg
MainTankInterior1.jpg
MainTankInterior1.jpg
MainTankInterior2.jpg
MainTankInterior2.jpg
MainTankLevelSensor.jpg
MainTankLevelSensor.jpg

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