Talerddig Performance

Class 25 Locomotive Performance

Talerddig Incline (Machynlleth - Caersws)

Gradient 1 in 52.5 from MP 64.5 to MP 61.75

Note: you can access the individual train logs using links from the Train column

Locos	Train	Date	Load	EDBHP	RAILHP	Speed MPH
						Av.	Min
25079 / 25186	1605 – Shrewsbury 2J57	19/06/82	11 / 392 / 417		1681	30	25
25194 / 25235	1605 – Shrewsbury 2J57	26/06/82	9 / 320 / 340		1266	25	21
25133 / 25224	1007 - Euston 1A46	03/07/82	9 / 297 / 320	1658	1737	35.4	32.1
25033 / 25067	1605 – Shrewsbury 2J57	03/07/82	11 / 392 / 417	1684	1753	32	26
25167 / 25224[1]	1640 – Derby 1T06	28/07/82	10 / 361 / 386		1152	20	18
25097 / 25185	1605 – Shrewsbury 2J57	14/08/82	10 / 367 / 392		1132	19	17
25206 / 25209	1605 – Shrewsbury 2J57	28/08/82	10 / 367 / 392		1689	31	26
25298 / 25322	1605 – Shrewsbury 2J57	04/09/82	9 / 322 / 342		1752	36	31
25298 / 25322	1815 – Euston 1A51	05/09/82	12 / 433 / 440	1930	1986	28.7	26.5
25182	1605 – Shrewsbury 2J57	18/09/82	4 / 142 / 156		865	38	32
25310 / 25311	1007– Euston 1A46	18/09/82	9 / 325 / 345	1740	1811	33.2	29.8
40106	1725 – Crewe 1L02	04/12/82	9 / 322 / 347		1514	34	28
25057 / 25083	1740 – Manchester 1T06	02/04/83	10 / 352 / 377		1729	33	28
25237 / 25243	1740– Euston 1T14	30/04/83	13 / 473 / 520	1766	1812	24.7	22.4
25243[2]	1740– Lichfield 1T12	02/05/83	12 / 484 / 514		786	12	10
25078 / 25242	1400 – Shrewsbury 2J72	28/05/83	12 / 410 /430		1551	26	21
25124 / 25133	1715– Shrewsbury 2J57	28/05/83	10 / 368 / 380	1688	1750	31.0	27.5
25289 / 25316	1010– Euston 1A46	04/06/83	9 / 330 / 360	1643	1705	31.0	27.5
25194 / 25305	1715– Shrewsbury 2J57	04/06/83	10 / 361 / 386		1736	32	28
25211	1010– Euston 1A46	02/07/83	9 / 333 / 360	874	888	17.8	16.4
25289 / 25327	1400– Shrewsbury 2J72	02/07/83	11 / 410 / 420	1592	1641	26.2	23.3
25297 / 25327	1045 Mach' – Euston 1A46	09/07/83	9 / 330 / 360	1559	1617	29.2	25.8
25277 / 25322	1400– Shrewsbury 2J72	09/07/83	11 / 410 / 420	1672	1721	27.6	22.2
25298 / 25320	1045 Mach' – Euston 1A46	16/07/83	9 / 330 / 360	1560	1620	30.1	28.9
25277 / 25285	1715 – Shrewsbury 2J57	16/07/83	10 / 360 / 380		1713	31	28
25320 / 25324	1010– Euston 1A46	23/07/83	9 / 306 / 336	1468	1524	29.0	26.0
25228 / 25239	1715 – Shrewsbury 2J57	23/07/83	10 / 360 / 380		1407	26	22
25083 / 25199	1756 – Derby 1T07	28/07/83	10 / 359 / 379		1486	26	25
25229[3]	1715– Shrewsbury 2J57	30/07/83	10 / 432 / 452		735[4]	13	7.0
25032 / 25083[5]	1715– Shrewsbury 2J57	06/08/83	10 / 360 / 380		1476	27	23
25288 / 25298	1010– Euston 1A46	06/08/83	9 / 333 / 365	1736		33
25076 / 25083	1715– Shrewsbury 2J57	13/08/83	10 / 370 / 390	1620	1686	31	26
25181[6]	1010– Euston 1A46	13/08/83	9 / 408 / 440	895	935	17	14
25175 / 25221	1010– Euston 1A46	20/08/83	9 / 333 / 350	1598	1594	31	28
25229 / 25234	1715– Shrewsbury 2J57	20/08/83	10 / 370 / 400	1351	1402	24	20
25250 / 25287	1010– Euston 1A46	27/08/83	9 / 333 / 350	1477	1544	31	26
40135	1715– Shrewsbury 2J57	27/08/83	10 / 359 / 380	1344	1410	26	23
25200 / 25212[7]	1715– Shrewsbury 2J57	03/09/83	10 / 370 / 385	908	1136	25	14
25083 / 25245	1740 - Manchester	21/04/84	9 / 333 / 360		1687	33	28
25276 / 25283	1830 – Euston 1T07	06/05/84	13 / 465 / 505		1715	24	23
25154 / 25209	1705 - Swindon	07/05/84	9 / 333 / 360	1408	1610[8]		26
25265 / 25283	1755 – Stratford on Avon 1T08	07/05/84	7 / 256 / 280		1664[9]
25037 / 25315	1010 – Euston 1A46	26/05/84	9 / 333 / 351		1108	21	19
25202 / 25245	1705 – Shrewsbury 2J87	26/05/84	12 / 407 / 415		1676	29	26
25265 / 25315	1010 – Euston 1A46	02/06/84	9 / 333 / 366	1712	1758	34	31
25042 / 25207	1705 – Shrewsbury 2J87	02/06/84	12 / 407 / 412		1752	30	27
25076 / 25189	1400 – Shrewsbury 2J84	02/06/84	11 / 397 / 411		1776	32	28
25265 / 25321	1400 – Shrewsbury 2J84	09/06/84	10 / 359 / 375	1592	1582	30	26
25288 / 25315	1010 – Euston 1A46	09/06/84	8 / 296 / 325	1457	1494	30	26
25249 / 25303	1010 – Euston 1A46	16/06/84	9 / 333 / 358	1786	1769	31	30
25076 / 25205	1400 – Shrewsbury 2J84	16/06/84	11 / 397 / 417	1642	1654	29	25
25249 / 25284	1010 – Euston 1A46	23/06/84	9 / 333 / 360	1380		28	23
25173 / 25237	1400 – Shrewsbury 2J84	23/06/84	11 / 397 / 417	1176		20	16
25268 / 25287	1400 – Shrewsbury 2J84	30/06/84	11 / 402 / 420	1672		29	26
25057 / 25237	1010 – Euston 1A46	30/06/84	9 / 333 / 360	1580		30	27
25298 / 25311	1010 – Euston 1A46	07/07/84	9 / 333 / 367	1622		31	28
25042 / 25224	1400 – Shrewsbury 2J84	07/07/84	10 / 362 / 386	1156		20	19
25279 / 25287	1010 – Euston 1A46	14/07/84	10 / 370 / 405	1700		31	27
25109 / 25199	1400 – Shrewsbury 2J84	14/07/84	10 / 362 / 372	1562		30	26
25279 / 25313	1010 – Euston 1A46	21/07/84	8 / 296 / 320	1482		30	28
25282 / 25324	1705 – Shrewsbury 2J87	21/07/84	11 / 405 /410	1727		30	27
25251 / 25282	1755 - Derby	26/07/84	8 / 288 / 310	1670		34	31
25178 / 25198	1705 – Shrewsbury 2J87	28/07/84	10 / 364 / 372	1599		31	27
25282	1010 – Euston 1A46	28/07/84	8 / 296 / 325	869		20	19
25268 / 25279	1010 – Euston 1A46	04/08/84	9 / 333 /366	1630		31	28
25205 / 25218	1705 – Shrewsbury 2J87	11/08/84	11 / 395 / 405	1641		29	25
25254[10]	1010 – Euston 1A46	11/08/84	9 / 404 / 441	855		15	14
25095 / 25154	1400 – Shrewsbury 2J84	11/08/84	11 / 395 / 410	1337		24	24
25265 / 25287[11]	1010 – Euston 1A46	18/08/84	9 / 333 / 374	1775		34	30
25044 / 25175	1400 – Shrewsbury 2J84	18/08/84	11 / 395 / 410	957		16	15
25268 / 25288[11]	1010 – Euston 1A46	25/08/84	9 / 333 / 367	1645		29	27
25037 / 25230	1400 – Shrewsbury 2J84	25/08/84	10 / 356 / 372	1709		32	28
25276 / 25298	1705 – Shrewsbury 2J87	25/08/84	11 / 405 / 420	1752		30	27
25193 / 25282[11]	1010 – Euston 1A46	01/09/84	9 / 333 / 375	1765		34	30
25285 / 25286	1705 – Shrewsbury 2J87	01/09/84	11 / 398 / 410	1807		31	28
25269 / 25288	1400 – Shrewsbury 2J84	08/09/84	11 / 395 / 408	1664		29	26
25278 / 25287	1010 – Euston 1A46	08/09/84	8 / 296 / 326	1560		31	29
25259 / 25297	1010 – Euston 1A46	15/09/84	9 / 329 / 361	1666		32	29
25034 / 25058	1400 – Shrewsbury 2J84	15/09/84	11 / 395 / 405	1637		29	26

[1] Leading engine, 25167, had inoperative weak fields

[2] Train loadings include weight of dead 25230. From a standing start at Llanbrynmair crossing, MP 64.75

[3] Train loadings include weight of dead 25181. Bad wheel slip between MP 62 ¾ and 62 ½.

[4] RAILHP 946 @ 16mph at MP 63.5, 435 @ 7mph at MP 61.75

[5] Locos driven in tandem

[6] Train loadings include weight of dead 25229

[7] Bad wheel slip caused power to be shut off at MP63 ½ for ¼ mile: 1760 at 63.75, 830 at 61.75

[8] Train eased off between MP62 and MP61 ¾ so log incomplete

[9] Train eased off between MP62 ½ and MP 62 ¼ so log incomplete

[10] Train loadings include weight of dead 25282 (Train significantly overcrowded)

[11] Train significantly overloaded

From data collected by Nick Lawford, Alan Baylis and other members of the Rat Roadshow

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