0.25 Radial Decouplers allowing fuel crossfeed (and ant engine contracts trouble)

[turkwinif]

When using radial decouplers to test two ant engines with two contracts, I noticed something peculiar. When I activated the first ant engine, it actually took fuel from my center tank, which shouldn't be happening. For some reason, all three radial decouplers now allow fuel crossfeed for me. I did not see anything like this in the changelog, so I guess it's a bug.

The stack douplers, though, still work as intended. They do not allow fuel flow.

Might I also add that I have tried every way to complete the contracts for the ant engines, but the contracts do not get fulfilled even though I activate them with all requirements met.

I'm running a completely stock 32-bit 0.25 Steam version, auto-updated by Steam from 0.24.2, with two new saves, on Windows 8. Here is the career save:https://www./folder/crfgyd3yb2keh/Career_Moderate

And the output_log file (near the end should be what you're looking for if there are any errors. I quit KSP after taking screenshots of the radial decouplers' info):http://www./view/thf19z4913fgqpo/output_log.txt

And a second, shorter output_log file after starting KSP again to take a screenshot of the ant engine in action:http://www./view/bgp1fiwjm7pbzja/output_log(2).txt

IN 0.25 CAREER:

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IN 0.25 SANDBOX:

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0.25 CAREER MUN FLYBY IN ACTION:(The second engine isn't firing yet because I'm saving it to test it in orbit)

Edited October 9, 2014 by turkwinif
"contract->"contracts" in third paragraph. Also, Steam, paragraph four.

[Caelib]

I had JUST come here to post about this same problem ... I was caught off guard by the TT-38K Radial Decoupler allowing crossfeed ... completely wrecked my mission

[turkwinif]

I had JUST come here to post about this same problem ... I was caught off guard by the TT-38K Radial Decoupler allowing crossfeed ... completely wrecked my mission

Yeah, I'm surprised that no-one else has posted a thread like this yet. I'm currently reinstalling a clean 0.25 KSP to see if that was the problem. I'll start a new save and see if they still allow fuel crossfeed (my "old" saves are saved on the desktop )

EDIT: Nope, the radial decouplers still allow fuel crossfeed in my clean install. Hopefully this bug will be fixed in a patch soon.

Edited October 9, 2014 by turkwinif

[RexKramer]

This behavior is not new to 0.25- it was present in 0.24 as well.

Not sure what the mechanic is, might be the girder attached to a decoupler.

Try the same setup with a fuel tank attached to the decoupler, instead of the girder. No crossflow.

Weird. Paging Kashua.

[Claw]

Yes, this is how it's always been mechanized. If you attach something other than a fuel tank to a radial decoupler, and that part allows crossfeed, then fuel will feed through the decoupler.

Any part that isn't specifically labeled as "not crossfeed capable" allows crossfeed. The radial decouplers are a special case in that they don't allow crossfeed to connected fuel tanks. Strange, but that's how it is.

Cheers,

~Claw

[turkwinif]

Thanks Kramer and Claw, I honestly had no idea that radial decouplers worked that way. I also was able to complete the LV-R1 contracts that were giving me trouble earlier. Marked at Solved

[Caelib]

Thanks Claw - I had no idea it worked that way and never experience this specific problem until yesterday!