Fuel from external tanks

[alkopop79]

I've built a spike engine powered space plane and I just cannot get fuel from the external tanks. Needless to say, I've tried connecting them to the main fuel tank and the engine yet the fuel in the external ones is just impossible to use. What am I doing wrong?

[KerbMav]

To root out the mean questions:

You are using fuel lines, do so correctly to feed from the external tanks to the center one?

The aero spike engine is a rocket engine, are you using the correct tanks (with oxidizer)?

[alkopop79]

I'm using the right fuel and the external tanks are connected to the main fuel tank.

[Kerbonautical]

Yeah it does sound like you may have the wrong fuel type. Just in case though remember the fuel is fed from the first object you click into the second. It's surprisingly easy to get it the wrong way round even when your used to it. Edit: nevermind the air bit, I just remembered your using aeros. If you can upload a craft file somewhere I could take a look for you

Edited October 24, 2013 by Kerbonautical
Botched post with a billion typos

[alkopop79]

I wonder why there isn't a manual or doc where all these things are explained?

[SRV Ron]

I'm using the right fuel and the external tanks are connected to the main fuel tank.

Are they connected with fuel lines point in the right direction as in the example pictures?

This one is asparagus stage in threes. Fuel is drawn from three tanks until gone. They are ejected as fuel draws from the next three until gone. Then, they are ejected as fuel remains in the center tank.

Edited October 24, 2013 by SRV Ron

[Kerbonautical]

Are they connected with fuel lines point in the right direction as in the example pictures?

This! Just as a heads up, depending on how low your settings are those arrows may be almost impossible to see which makes it hard to tell which way the fuel is being fed

[Sirrobert]

Connected can mean alot of things.

HOW are they connected? Provide a screenshot

[alkopop79]

Yeah it does sound like you may have the wrong fuel type. Just in case though remember the fuel is fed from the first object you click into the second. It's surprisingly easy to get it the wrong way round even when your used to it. Edit: nevermind the air bit, I just remembered your using aeros. If you can upload a craft file somewhere I could take a look for you

Cannot upload the file, I lost the vehicle (will rebuild it, thanks for your help). The external tank is not stock part but is contains fuel and oxidiser. The ducts are/were connected correctly.

[alkopop79]

Typical. Just as I rebuilt the external tank bit, it works fine. Haven't done anything differently,I connected the ducts to the externals then to the centre tank. Weird. Thank you for your help!