no crossfeeed after docking

[Laie]

Hello,

here's a picture of my latest Vessel, both as an assembly kit and finished in Orbit. Problem is, on the assembled vessel there is no fuel crossfeed from the outriggers. I can only access the stuff from the core. I built a very similar vessel just the other day (picture) which worked just fine. What's wrong with this one?

To double-check, I assembled the vessel in VAB and rolled it out. Works nicely. As soon as I undock and reconnect a part, however, the fuel in the reattached part becomes inaccessible.

 

(in case you're wondering why I'm building such a thing... it's a challenge)

 

 

 

Edited September 9, 2017 by Laie

[Pand5461]

Eh... Are you sure crossfeed is enabled on all decouplers?

[Laie]

Of course. First thing I tried.

[ThreePounds]

Try turning the cross feed on and off. That sometimes fixes it for me. If it's still not working you can go to the options and turn off "resource transfers obey cross feed rules."

[HvP]

The docking ports could also have crossfeed turned off, but I assume you checked that too. Some parts cannot transfer resources, such as I-beams and heat shields.

[Laie]

15 hours ago, Three_Pounds said:

turn off "resource transfers obey cross feed rules."

I wasn't even aware such a thing exists. Alas, that's not an option but a difficulty setting you may check on the start of a new (Career|Sandbox|Science) game. In order to change it at a later time one has to edit the savegame.

This is not the answer I was looking for (I expect it's due to some arcane side effects of rerooting when two vessels are merged). But at least it's a workaround that allows me to keep going. Thank you very much.

[ThreePounds]

5 minutes ago, Laie said:

I wasn't even aware such a thing exists. Alas, that's not an option but a difficulty setting you may check on the start of a new (Career|Sandbox|Science) game. In order to change it at a later time one has to edit the savegame.

This is not the answer I was looking for (I expect it's due to some arcane side effects of rerooting when two vessels are merged). But at least it's a workaround that allows me to keep going. Thank you very much.

Like I said, I usually have the same problem when docking my tanker vessels to my stations. I usually have to toggle the crossfeed on all parts (docking ports mostly) before I can transfer the fuel. Try assembling it in the VAB and turn on the fuel delivery overlay (action menu on an engine or fuel tank) - you might need advanced tweakables turned on for this - and check if it goes across.

Also, you can reach the options by pressing ESC > Settings > Difficulty Options. It's on the second page. No save file editing necessary.