Add parallel problem

[Nick the Cabin Boy]

Tha attached file is just something I've been messing about with to relieve boredom!  However, I have struck a problem with the "Add parallel" function.  At the bottom of the layout, you will see two pieces of curved flex, which are obviously out of position.  These appeared when I added parallel (26.4mm right).  The unconnected track in the middle of the layout was added in the same way.

I've tried both rightclick-select and highlight-ribbon-option methods, with the same result.

The piece at bottom right is the correct radius for a 26.4mm left selection, but is going the wrong way anyway!

This only appears to happen in the bottom, say, third of the layout.  I tried opening a new file and doing some parallels, but couldn't reproduce what's happened here.

Any ideas?

Nick, in Tasmania

[David]

This happens when curved flex is flipped. It will be fixed in the next update.

David.

[Nick the Cabin Boy]

I think I can give a history of the segment at bottom right.

First I created the loop at left, using "add parallel" to add the outer track, with the double straight track parallel to the left edge (ie 90°).  Then I flipped it and rotated it 15°.  Later, I copied the bottom 4 pieces to make the bottom right loop.  This wouldn't have caused a problem, except that, by making a 14° 457mm radius curve to bring the diverging track back to parallel in the original loop, I had created a larger track spacing than usual.

So, when I added the copied parts at the bottom right, the spacing was wrong.  So I tried to do it again, with the correct spacing, having deleted the outer track, with the result you see before you.

I assume, from what you're saying, that the only fix at present is to delete those parts that were flipped, and recreate them before "adding parallel"?

Nick

[David]

Yes, I'm afraid you need to redo them.

David.

[Nick the Cabin Boy]

Hi David,

I just installed AR4.24, and then retried the add parallel on that bit at bottom right.  It still did the same as before!

So I assume that the "fix" only applies to future work, and that the error is sort of embedded in the existing plan; would that be a fair assumption?

Nick, in Tasmania

[David]

@Nick: True.
The problem was not so much in the 'Add parallel' function, but in the 'Flip' function for flex track. So yes, it only works for future work.

David.