Also,can I post fleet details of mis-matched Northern Line sets.
All the 517xx are paired with 515s or 516s.
Saw 2 pairs of mis-matched 515s as well.
Not sure if these change regularly or if they are in fact supposed to mis-match?
Also,most start with an odd lower number and some start with an even lower number?
Perhaps a fleet list post could be a good idea so we know which starts on evens and which ones start on odds.
Thanks to Bluegoblin7 for the gen.
1995TS de-icing cars are broadly paired with non de-icing cars in numerical order. They don't get re-marshalled often, and generally get swapped back even if they do.
The pairings I understand are as follows, but this is from a while back and a very small number may be incorrect these days. Each pair reads up and down.
502 504 506 509 511 513 516 518 521 523 526 528 530 533 535 537 540 542 544 547
503 505 507 510 512 514 517 519 522 524 527 529 531 534 536 538 541 543 545 548
549
552 554 556 558 561 563 565 568 570 572 575 577 579 582 584 586 589 591 593
550
567 555 557 559 562 564 566 569 571 573 576 578 580 583 585 587 590 592 594
596 598 600 603 605 607 610 612 614 617 619 621 624 626 628 631 633 635 638 640
597 599 601 604 606 608 611 613 615 618 620 622 625 627 629 632 634 636 639 641
642 645 647 649 652 654 656 659 661 663 666 668 670 673 675 677 679 681 683 685
643 646 648 650 653 655 657 660 662 664 667 669 671 674 676 678 680 682 684 686
501 508 515 520 525 532 539 546 553 560
551 574 581 588 595 602 609 616 623 630
701 702 703 704 705 706 707 708 709 710
711 712 713 714 715 716 717 718 719 720
637 644 651 658 665 672
721 722 723 724 725 726
The disposition between 551 and 567 appears to be long-term.
A known discrepancy from recent notes is that 531 was paired with 556, so 530 possibly with 557. They may or may not have swapped back.