Going to try to keep this HEX post contained - having now written out the potential diagrams (based on RRT / open data stream output).
I note the Heathrow Express will only need four sets of stock with the reduced turn round times as Paddington. Will some of these be 12 car? 12 units for eight diagrams is rather generous. What chance of a HEX unit chucking out on a GWR service when the need arises?
HEX is still 5 sets of stock it’s simply the long turnaround moves from Paddington to Heathrow
Thanks to both of you. I hadn't spotted the long layovers at Heathrow.
Again, I just can't see this working. The minute a HEX arrives a few minutes late it is guaranteed to depart late and thus get in the way of GWR services departing after with further knock on delays. The more I see of this 2019 timetable, the more I'm convinced it is never going to work. I see operation princess mk2.
Are HEX planning driver changes at Paddington in a similar vein to the tube at terminal stations? If so that's a partial mitigation against at least minor delays to the service. Anything beyond 5 mins late will likely require cancellations.
Heathrow Express possible diagrams - from RTT platforms. NOT-OFFICIAL (in any way).
Five diagrams (
presume eight cars each but could be only 4).
Note: appears all start as 8 x Cl.387, with evening divides. No current schedules to suggest a 4 car start with strengthening during the day. All the evening ECS paths are non-Q, suggesting all diagrams split in the evening to become 4 x Cl.387 from 2040 on wards. Further info suggests no splitting of diagrams is planned by HEx (GWR), planned ECS's reflect current need by HEx and to cover any overlap when timetable change occurs. [Thanks
@JN114 ]
A point i overlooked was that HEx (GWR) won't (and can't) be using the OOC EMU depot! Silly me (my apologies).
Note: there appears to be a few platform errors in the evening (so it seems, to my eye, in formulating the below diagrams). I've struggled to make sense of some of the workings (around 1Y84 onwards). The headcode increment at paddington is: Yxx = T+4, untill 1Y84 / 1Y85, when 1Y85 becomes 1Y90 and all then follow Yxx = T+5.
1Y84 (plat 6) = 1T88 (plat 7) + 1T89 (plat 6)
1T88 can not be formed by 1Y83 (HEx-02), the previous arrival on Plat 7, as that diagram splits later in the day as 1Y88 - 5Y88 and 1T91 (all plat 6).
Possible 1Y84 (currently showing #6 at PAD) is showing incorrect platform, and should make 1T88 (currently showing #7 at PD) and 1Y84 (currently showing #7 at PAD) should make 1T89 (currently showing #6 at PAD) and then the pattern prevails till close of play. Means that anything I've proposed after 1Y84 is incorrect. (again, apologies).
I've edited to remove the evening ECS moves (before close of play), and shall take a look at the late evening schedule when time allows.
So here is what it looks like is happening:
Using Terminal 5 as they currently use Paddington (two platforms in Dec 19, vice 1 platform currently)
Lay over of 25 minutes at Terminal 5 (vice the current 10 minutes)
Lay over of 8 minutes at Paddington (vice the current 20 minutes)
There looks to be sufficient turn time at Terminal 5 to absorb any late running, certainly on the down, ensuring a right time start for the up services. They should present to Hex Jn ontime. [the XR pad - T4 and shuttle appear to allow sufficient leyway if they are delayed, with the the up HEX having an on time start from T5]
I don't see much interaction with the tunnel services, within 6-7 minutes of ontime running, with the exception the the up HEx follows the up XR at heathrow central XR xx26-xx28 / HEx xx31-xx32 and XR xx56-58 / HEx xx01-xx02
Arrival at pad upto 5 minutes late and it can still probably get out ontime (or within 1 or 2 minutes). The late inward going straight back out when late is neither her nor there really, as it shouldn't be able to get to 25 late or more (affecting the back start from T5 - and if it is, I would suggest the whole of paddington is screwed and the XR will be getting curtailed (probably the Hayes stoppers, rather than Heathrows). I don't foresee the need to cancel HEx if they are within 10 / 15 minutes lateness (obviously depending on circumstances) - it'll just operate 1 in / 1 out at pad, as planned (albeit a bit delayed). If they are all running out of course, it's not an issue. If a single unit is out course however, that could be a different matter.
With regard to HEx starting late and knock on effects - there is a decent margin (to depart say 3 late, and only knock the incoming GWR - the other arrival are / should be parallel arrivals to the departing HEx). Running on the down at Hex Jn at xx19 + xx49 the HEx is followed by the non-stop bristol at xx23 and xx53; Wales at xx26 and xx59; and Oxfords xx28 and 58. There shouldn't be too much to overcome there.
Then the xx34 and xx04 HEx is followed by the cheltenham / Bristol slow at xx36 and 10; the bristol slow / WofE at xx40 and 12; and the Oxford / bedwyn at xx28 and 16. Again, this should be plenty of time for all to rumble through with minimum issue if HEx is a little late. They should be able to make up any time pre-reading.
But time shall tell.
I make no apologies for length of the post!
Possible diagrams:
HEx-01:
5T22 0402 ex-OOC [a. Pad 0419]
5Y22 0436 ex-Pad / 5T22 (Q) / 5T17 (Q) / 5Y22 (Q)*
5Y22 a. T5 0457 - 1Y22 d. 0512
1Y22 a. Pad 0535 - 1T26 d. 0540
1T26 a. T5 0602 - 1Y27 d. 0627
1Y27 a. Pad 0647 - 1T31 d. 0655
1T31 a. T5 0716 - 1Y32 d. 0742
1Y32 a. Pad 0803 - 1T36 d. 0810
1T36 a. T5 0832 - 1Y37 d. 0857
1Y37 a. Pad 0917 - 1T41 d. 0925
1T41 a. T5 0946 - 1Y42 d. 1012
1Y42 a. Pad 1032 - 1T46 d. 1040
1T46 a. T5 1102 - 1Y47 d. 1127
1Y47 a. Pad 1147 - 1T51 d. 1155
1T51 a. T5 1216 - 1Y52 d. 1242
1Y52 a. Pad 1302 - 1T56 d. 1310
1T56 a. T5 1332 - 1Y57 d. 1357
1Y57 a. Pad 1417 - 1T61 d. 1425
1T61 a. T5 1446 - 1Y62 d. 1512
1Y62 a. Pad 1532 - 1T66 d. 1540
1T66 a. T5 1602 - 1Y67 d. 1627
1Y67 a. Pad 1648 - 1T71 d. 1655
1T71 a. T5 1716 - 1Y72 d. 1742
1Y72 a. Pad 1802 - 1T76 d. 1810
1T76 a. T5 1832 - 1Y77 d. 1857
1Y77 a. Pad 1717 - 1T81 d. 1925
1T81 a. T5 1946 - 1Y82 d. 2012
1Y82 a. Pad 2032 (plat 6) - 1T86 d. 2040 (plat 6)
1Y82 a. Pad 2032 (plat 6) - 5Y82 d. 2045 (plat 6) (OOC EMU a. 2105)
1T86 a. T5 2102 - 1Y87 d. 2127
1Y87 a. Pad 2147 - 1T92 d. 2210
1T92 a. T5 2232 - 1Y93 d. 2257
1Y93 a. Pad 2317 - 5Y93 d. 2330 (OOC EMU a. 2250)**
*5T22 has two paths, from OOC, one 'Q' for ECL into Pad. 5T17 shares 5T22 timings, but ECL (vice RL)
**5Y93 + Q to Reading
HEx-02:
5Y23 (d. 0430 OOC) a. T5 0507 - 1Y23 d. 0527
1Y23 a. Pad 0550 - 1T27 d. 0555
1T27 a. T5 0616 - 1Y28 d. 0642
1Y28 a. Pad 0702 - 1T32 d. 0710
1T32 a. T5 0732 - 1Y33 d. 0757
1Y33 a. Pad 0818 - 1T37 d. 0825
1T37 a. T5 0846 - 1Y38 d. 0912
1Y38 a. Pad 0932 - 1T42 d. 0940
1T42 a. T5 1002 - 1Y43 d. 1027
1Y43 a. Pad 1047 - 1T47 d. 1055
1T47 a. T5 1116 - 1Y48 d. 1142
1Y48 a. Pad 1202 - 1T52 d. 1210
1T52 a. T5 1232 - 1Y53 d. 1252
1Y53 a. Pad 1317 - 1T57 d. 1325
1T57 a. T5 1346 - 1Y58 d. 1412
1Y58 a. Pad 1432 - 1T62 d. 1440
1T62 a. T5 1502 - 1Y63 d. 1527
1Y63 a. Pad 1547 - 1T67 d. 1555
1T67 a. T5 1616 - 1Y68 d. 1642
1Y68 a. Pad 1702 - 1T72 d. 1710
1T72 a. T5 1732 - 1Y73 d. 1757
1Y73 a. Pad 1817 - 1T77 d. 1825
1T77 a. T5 1846 - 1Y78 d. 1912
1Y78 a. Pad 1932 - 1T82 d. 1940
1T82 a. T5 2002 - 1Y83 d. 2027
1Y83 a. Pad 2047 - 1T87 d. 2055
1T87 a. T5 2116 - 1Y88 d. 2142
1Y88 a. Pad 2002 (plat 6) - 5Y88 d. 2215 (plat 6) (OOC a. 2235)
1Y88 a. Pad 2002 (plat 6) - 1T93 d. 2225 (plat 6)
1T93 a. T5 2246 - 1Y94 d. 2312
1Y94 a. Pad 2332 - 5Y94 d. 2340 (OOC a. 0003)**
**5Y94 + Q to West Ealing
HEx-03:
5T19 (Q) ex-OOC d. 0425 a. Pad 0441
5T18 (Q) / 5T24 (Q) ex-OOC d. 0423 a. Pad 0441
5Y18 (Q) ex-pad d. 0451 a. HEX Central 0511
5E23 (Q) ex-W. Ealing d. 0500 a. HEX Cental 0510
2E23 d. HEX Central 0513
2E23 a. T5 0517 - 1Y24 d. 0542
1Y24 a. Pad 0602 - 1T28 d. 0610
1T28 a. T5 0632 - 1Y29 d. 0657
1Y29 a. Pad 0717 - 1T33 d. 0725
1T33 a. T5 0746 - 1Y34 d. 0812
1Y34 a. Pad 0833 - 1T38 d. 0840
1T38 a. T5 0902 - 1Y39 d. 0927
1Y39 a. Pad 0947 - 1T43 d. 0955
1T43 a. T5 1016 - 1Y44 d. 1042
1Y44 a. Pad 1102 - 1T48 d. 1110
1T48 a. T5 1132 - 1Y49 d. 1157
1Y49 a. Pad 1217 - 1T53 d. 1225
1T53 a. T5 1246 - 1Y54 d. 1312
1Y54 a. Pad 1332 - 1T58 d. 1340
1T58 a. T5 1402 - 1Y59 d. 1427
1Y59 a. Pad 1447 - 1T63 d. 1455
1T63 a. T5 1516 - 1Y64 d. 1542
1Y64 a. Pad 1602 - 1T68 d. 1610
1T68 a. T5 1632 - 1Y69 d. 1657
1Y69 a. Pad 1717 - 1T73 d. 1725
1T73 a. T5 1746 - 1Y74 d. 1812
1Y74 a. Pad 1833 - 1T78 d. 1840
1T78 a. T5 1902 - 1Y79 d. 1927
1Y79 a. Pad 1947 - 1T83 d. 1955
1T83 a. T5 2016 - 1Y84 d. 2042
1Y84 a. Pad 2103 (plat 6) - 1T88 d. 2110 (plat 7 RTT)
1T88 a. T5 2132 - 1Y89 d. 2157
1Y89 a. Pad 2217 - 1T95 d. 2255
1T95 a. T5 2316 - 1Y96 d. 2342
1Y84 a. Pad 2103 (plat 6) - 1T89 d. 2125 (plat 6 RTT)
1T89 a. T5 2146 - 1Y90 d. 2212
1Y90 a. Pad 2232 - 1T94 d. 2240
1T94 a. T5 2302 - 1Y95 d. 2327
1Y95 a. Pad 2347 - 5Y95 d. 0003 (OOC a. 0021)**
*5T19 / 5T18 / 5T24 from OOC share same path into pad
*5Y18 / 5E23 share same path into Heathrow Central (ex-pad / ex-West Ealing EMU)
**5Y96 + Q to West Ealing
**5Y95 + Q to Reading
HEx-04:
3T24 (Q, RDG) d. 0408 a. Pad 0456 - 1T24 d 0510
1T24 a. T5 0532 - 1Y25 d. 0557
1Y25 a. Pad 0617 - 1T29 d. 0625
1T29 a. T5 0646 - 1Y30 d. 0712
1Y30 a. Pad 0732 - 1T34 d. 0740
1T34 a. T5 0802 - 1Y35 d. 0827
1Y35 a. Pad 0847 - 1T39 d. 0855
1T39 a. T5 0916 - 1Y40 d. 0942
1Y40 a. Pad 1002 - 1T44 d. 1010
1T44 a. T5 1032 - 1Y45 d. 1057
1Y45 a. Pad 1117 - 1T49 d. 1125
1T49 a. T5 1146 - 1Y50 d. 1212
1Y50 a. Pad 1232 - 1T54 d. 1240
1T54 a. T5 1302 - 1Y55 d. 1327
1Y55 a. Pad 1347 - 1T59 d. 1355
1T59 a. T5 1406 - 1Y60 d. 1442
1Y60 a. Pad 1503 - 1T64 d. 1510
1T64 a. T5 1532 - 1Y65 d. 1557
1Y65 a. Pad 1617 - 1T69 d. 1625
1T69 a. T5 1646 - 1Y70 d. 1712
1Y70 a. Pad 1732 - 1T74 d. 1740
1T74 a. T5 1802 - 1Y75 d. 1827
1Y75 a. Pad 1847 - 1T79 d. 1855
1T79 a. T5 1616 - 1Y80 d. 1942
1Y80 a. Pad 2002 - 1T84 d. 2010
1T84 a. T5 2032 - 1Y85 d. 2057
1Y85 a. Pad 2117 - 5Y85 d. 2123 (OOC a. 2143)
1Y85 a. Pad 2117 - 1T90 d. 2140
1T90 a. T5 2202 - 1Y91 d. 2227
1Y91 a. Pad 2249 - 1T96 d. 2310
1T96 a. T5 2332 - 1Y97 d. 2351
1Y97 a. Pad 0015 - 5Y97 d. 0028 (OOC a. 0101)**
*3T24 has no other path currently (NOTE: the 5T24 path above ex-OOC is same time as 5T18+19)
**5Y97 + Q path to Reading
HEx-05:
3T25 (Q, RDG d. 0419 a. Pad 0513)
5T20 (Q, OOC d. 0456 a. Pad 0515)
5T25 ex-OCC d. 0456 a. Pad 0515 - 1T25 d. 0525
1T25 a. T5 0546 - 1Y26 d. 0612
1Y26 a. Pad 0632 - 1T30 d. 0640
1T30 a. T5 0703 - 1Y31 d. 0716
1Y31 a. Pad 0747 - 1T35 d. 0755
1T35 a. T5 0816 - 1Y36 d. 0842
1Y36 a. Pad 0903 - 1T40 d. 0910
1T40 a. T5 0932 - 1Y41 d. 0957
1Y41 a. Pad 1017 - 1T45 d. 1025
1T45 a. T5 1046 - 1Y46 d. 1112
1Y46 a. Pad 1132 - 1T50 d. 1140
1T50 a. T5 1202 - 1Y51 d. 1227
1Y51 a. Pad 1247 - 1T55 d. 1255
1T55 a. T5 1316 - 1Y56 d. 1342
1Y56 a. Pad 1403 - 1T60 d. 1410
1T60 a. T5 1432 - 1Y61 d. 1457
1Y61 a. Pad 1517 - 1T65 d. 1525
1T65 a. T5 1546 - 1Y66 d. 1612
1Y66 a. Pad 1632 - 1T70 d. 1640
1T70 a. T5 1702 - 1Y71 d. 1727
1Y71 a. Pad 1748 - 1T75 d. 1755
1T75 a. T5 1816 - 1Y76 d. 1842
1Y76 a. Pad 1903 - 1T80 d. 1910
1T80 a. T5 1932 - 1Y81 d. 1957
1Y81 a. Pad 2017 - 1T85 d. 2025
1T85 a. T5 2046 - 1Y86 d. 2112
1Y86 a. Pad 2132 (plat 6) - 5Y86 d. 2145 (plat 6) (OOC a. 0205)
1Y86 a. Pad 2132 (plat 6) - 1T91 d. 2155 (plat 6)
1T91 a. T5 2216 - 1Y92 d. 2242
1Y92 a. Pad 2302 (plat 6) - 1T97 d. 2325 (plat 6)
1T97 a. T5 2346 - 5T97 d. 0003 (OOC a. 0041)
*3T25 ex-Reading TCD / 5T25 ex-OOC EMU / 5T20 is copy of 5T25 path