FTX-2 External Fuel Duct

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FTX-2 External Fuel Duct
Part image
Fuel Transfer by
FLOOYD Dynamics Research Labs
Radial size Radial mounted
Cost (total) 150.00 Funds
Mass (total) 0.05 t [N 1]
Drag 0.02 [N 1]
Max. Temp. 2000 K
Impact Tolerance 12 m/s
Research Fuel systems.png Fuel Systems
Unlock cost 6 200 Funds
Since version 0.13
Part configuration fuelLine

  1. 1.0 1.1 The mass and drag are from the part config, but the game handles it massless/dragless.

The FTX-2 External Fuel Duct is the only fuel line in the game so far. It allows fuel to be drained off external (side-mounted) tanks, or tanks in latter stages. Currently it is massless and dragless, despite the CFG file values.


The FTX-2 allows fuel not directly connected to an engine to be used. The line must be first connected to the source for the fuel then to the destination of the fuel. If an engine is connected directly to fuel tanks by a fuel line, the tanks connected by fuel line will be prioritized.

Any part connected to a fuel line will allow fuel flow, even if fuelCrossFeed = False in its CFG file. The FTX-2's links provide additional strength and stability, somewhat like the EAS-4 Strut Connector.


New breakthroughs at FLOOYD Dynamics have made the FTX Fuel Duct a reality. Altough criticized by some as being no more than 'a sewage pipe painted yellow', most agree that the yellow is a relatively nice color, and that fuel lines are indeed able to pump fuel from side-mounted fuel tanks. After the recall of the FTX-1 series, All FTX-2 lines have arrows painted on to indicate the fuel flow direction, so engineers can tell which way around they are supposed to go.

— 'FLOOYD Dynamics Research Labs'


  • Changed the flow direction, so fuel will flow from the first-placed end of the line to the second end.
  • Initial release