Never Used Unit Identifiers Query

[bb21]

I wonder which unit "identifiers" (last three digits of a unit number - without the class number) have never been used in the TOPS system for any class, even temporarily, even if now renumbered. For example, 678 would not qualify as it would have been used by Class 101, and 962 would not qualify either as Class 158 has a unit numbered with it, albeit just temporarily for now.

My interests are confined to within the 000-299, 400-699, and 900-999 ranges.

Off the top of my head, the following are already covered and therefore not eligible:

• 001-127 covered by Class 450 (for example / some could be covered by several classes);
• 128-150 covered by Class 150;
• 151-197 covered by Class 465;
• 201-285 covered by Class 150;
• 401-514 covered by Class 156;
• 515-541 covered by Class 365;
• 601-630 covered by Class 375;
• 631-639 covered by Class 170;
• 649-672 covered by Class 317;
• 901-927 covered by Class 375;
• 950-962 covered by Class 158;

Did the 142s get renumbered into the 500 series at one stage? If so, how many did?

Any help appreciated. Did I miss anything? I am not good with first generation units so I am sure there are other numbers that must have been covered.

Similarly which identifiers have never been used by any locomotive (diesel/electric ones only)? (Not restricted to the above given ranges, can be any from 000 to 999.)

 

[BurtonM]

Wikipedia has a brief bit on the Pacers that got renumbered into 142/5, it details seven units, but none of them are of interest to you unfortunately.
I'm scouring Wikipedia and googling things to see if I can assist.

928 to 934 is covered by 465s.
999 has been used temporarily on a developmental unit.
Class 31 will cover the rest of the 200s: http://www.railblue.com/Fleet/class_31_fleet.htm
198-199 have been used by Class 40s.
Class 66 gets rid of a lot:
542-72 and 582-599.
673-699 have been used on 37s.


So far, numbers that haven't been used are:

573-581, 935-949, and 963-998.

Well, that's a majority gone! I should probably go to bed now.

 

[JonathanH]

Wikipedia has a brief bit on the Pacers that got renumbered into 142/5, it details seven units, but none of them are of interest to you unfortunately.
I'm scouring Wikipedia and googling things to see if I can assist.

928 to 934 is covered by 465s.
999 has been used temporarily on a developmental unit.
Class 31 will cover the rest of the 200s: http://www.railblue.com/Fleet/class_31_fleet.htm
198-199 have been used by Class 40s.
Class 66 gets rid of a lot:
542-72 and 582-599.
673-699 have been used on 37s.


So far, numbers that haven't been used are:

573-581, 935-949, and 963-998.

Well, that's a majority gone! I should probably go to bed now.

573 to 581 used by class 47s.

Wessex had 158s 158961 to 158968 and TPE had 158971 to 158976. Northern temporarily formed 158943.

Were there not over 100 302s completing the 2xx series? Yes, checking a 1987 stock book - 302201 to 302312. Also shows 308993 to 308995 which were partly luggage van units and 411500 to 411621 although of course few carried the full TOPS number.

Which numbers were not used by 08 shunters? They seem to almost cover the entire range.

 

[Domh245]

543-570 are also covered by the 450/5s (with a resulting gap in the 450/0s between 043 and 070)

Also:
701-742+750 covered by 455/7s
801-874 covered by 455/8s

 

[D6975]

302 990-2 were parcels units.
302 996-8 were sandite units.
That completes the 99x series for units.

For locos the 08s account for most numbers, just the high 900s missing except for 991-5.
47s account for 971-6 and 981.
970 was the departmental 31
The rebuilt 73s are gradually filling up the 96x series, not sure what the highest will be, but they're up to 966 at the moment and I think there are more to come.
That leaves very little to fill in.
957-960 (4)
end of rebuilt 73s to 969 (3 at most, poss zero)
982-990 (9)
996-9 (4)

 

[bb21]

Thanks folks. Much appreciated.

I'll briefly explain why I'm doing this. I am writing a small program and require a list of numbers (preferably quite distinct from each other) as generic values for all classes. I would prefer something less obvious, rather than the usual tricks of using 000s, 500s or 999s, for example.

I think I may have to resort to using the 3,7 and 8 ranges (which I preferred to avoid for reasons I won't go into) as there isn't much to choose from otherwise (much smaller choice than I envisaged).

So to sum up, for units, the ones not used are:

• 000;
• 198-200;
• 640-648;
• 673-675;
• 696-699;
• 893-900;
• 935-942;
• 944-949;
• 969, 970;
• 977-989,

and for locos, I take the summary given by D6975:

• 957-960;
• end of rebuilt 73s to 969;
• 982-990;
• 996-999;

Was 000 ever used in the loco series? I understand that 41001 was assigned 43000 as a carriage number but was it still officially using that when the power cars were reclassified as locos?

 

[JonathanH]

Thanks folks. Much appreciated.

I'll briefly explain why I'm doing this. I am writing a small program and require a list of numbers (preferably quite distinct from each other) as generic values for all classes. I would prefer something less obvious, rather than the usual tricks of using 000s, 500s or 999s, for example.

I think I may have to resort to using the 3,7 and 8 ranges (which I preferred to avoid for reasons I won't go into) as there isn't much to choose from otherwise (much smaller choice than I envisaged).

So to sum up, for units, the ones not used are:

• 000;
• 198-200;
• 387-391;
• 400;
• 640-648;
• 673-700;
• 875-879;
• 893-900;
• 935-942;
• 944-949;
• 969, 970;
• 977-989,

and for locos, I take the summary given by D6975:

• 957-960;
• end of rebuilt 73s to 969;
• 982-990;
• 996-999;

Was 000 ever used in the loco series? I understand that 41001 was assigned 43000 as a carriage number but was it still officially using that when the power cars were reclassified as locos?

A few more we missed earlier

101676 to 101695 refurbished 101s in the 1990s/early 2000s
421801 to 421891 refurbished phase 2 Cigs although these weren't carried as 6 digit numbers.

Stretching things just a little more, my 1990 book suggests that there was a class 117 unit that carried unit number L400, a 101 which carried L700 and other Western region units carrying 939 to 977 with a prefix of S, C, P or B. However these didn't carry class prefixes and I have no idea how they were recorded on TOPS if at all.

And, going further back, I have a 1981 book that suggests that Scottish DMUs were numbered under six digit numbers. That gives 116385 to 116396 which fills up the 3xx series. Whether these were carried or not I don't know.

 

[bb21]

Great. I'll remove those.

As for the Western region units I won't remove them yet until there is confirmation of them having been used in TOPS.