Fuel Flow Issues

[LordFerret]

I've got a rocket I've built which is having strange fuel flow issues. Below you'll find a picture and link to the craft file for it, rocket "DO1I-SS". In going to the launch scene, after giving the rocket a moment to 'settle down' on the launch pad, all tanks show full. At launch, the tanks on the extreme far side of the view (refer to image), as in viewing from the North, the top-most and bottom-most tanks both begin draining at a very high rate. All the other tanks drain normally, from the top on down. The two engines on that extreme far side run out of fuel long before any of the others do, so, naturally, it becomes a serious problem controlling the rocket at altitude. I've reviewed the craft file, but I can't see any difference between those two engines and set of tanks over the others. I'm beginning to think this is a bug. I'll note that the mods I use are StockBugFixModules.v1.0.2d.2 and SCANsat-v12.0... and the rocket has two SCANsat scanners onboard.

DO1I-SS craft file

EDIT

I find that removing the fuel lines, the fuel drain pattern changes - but the same two engines run out of fuel first.

Edited May 18, 2015 by LordFerret
additional notes

[cybersol]

Can you post a craft without the Scansat pieces?

[Kelderek]

I tried your craft and I'm getting the same result (I edited out the scansat stuff so I could load the ship). My guess is it's a bug. You might try to rebuild the ship with the same design from scratch with a new craft file and see if it has the same problem.

[cybersol]

Yeah removing all fuel lines from the craft file itself or rebuilding from scratch would be the only ways to make sure its a bug.

[LordFerret]

I did try removing the fuel lines, as I stated in the 'EDIT' comment after the picture.

Here is the same craft file, but with the fuel lines and SCANsat scanners removed.

I'm going to 'rebuild' the lifter portion of the rocket again and see what results that gives me.

[cybersol]

Its a buggy craft file, remove your north most side engine and you get both it and another ghost fuel tank and cone. It looks like things do when the root wasn't set right at some point. If I remove the side engine next to it, I get a normal piece. So I removed that engine and replace it using 6 way symmetry and it works as expected now.

[LordFerret]

Its a buggy craft file, remove your north most side engine and you get both it and another ghost fuel tank and cone. It looks like things do when the root wasn't set right at some point. If I remove the side engine next to it, I get a normal piece. So I removed that engine and replace it using 6 way symmetry and it works as expected now.

Yes, agreed. When I went and edited the rocket, I noticed that one of the upper C7 Adapters wasn't connected properly, and one of the lower C7 Adapters wasn't connected properly either. After making the changes, it does work properly.

I don't believe the problem stemmed from the root (the OKTO), but rather when I placed the part using the Alt-key (modifier) and rotated it ... somehow. In any case it's fixed. Thanks for looking at it and providing input.

[cybersol]

You're welcome, and thanks for the rep.