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| Freight trains length 14/09/2022 at 12:55 #148002 | |
jean_gagne_555
7 posts |
In the 1979-80 timetable for Carlisle PSB, most class 6, 7 and 8 freight trains are about 300 to 400 meters long. But, in the 1977 timetable for Warrington PSB, they are mostly about 200 meters long. Was there a change of practice between 1977 and 1979 that increased the length of freight trains ? Or is it something related to the region that would require shorter trains. Class 4 Freightliner trains are about the same length in both timetables. Jean Log in to reply |
| Freight trains length 14/09/2022 at 15:58 #148004 | |
jc92
3631 posts |
Length of trains (and the weight) is defined by the length limit on its given route and traction used, listed in a freight train loads book. The trains in Carlisle 1979 were worked out based on the longest/heaviest train possible within these limits set out in the appropriate book, giving you the longest train you might have go deal with. I cant speak for warrington but they've likely just been put in as average estimated consists rather than maximum ones. Of course on a given day the train length would vary for a wagonload train depending in what traffic there was anyway. "We don't stop camborne wednesdays" Log in to reply |
| Freight trains length 15/09/2022 at 10:41 #148018 | |
58050
2650 posts |
jc92 in post 148004 said:Length of trains (and the weight) is defined by the length limit on its given route and traction used, listed in a freight train loads book. Further to that I did use the LMR May 1979 & May 1980 freight train loads books too. Log in to reply |
| Freight trains length 15/09/2022 at 10:48 #148019 | |
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58050
2650 posts |
jean_gagne_555 in post 148002 said:In the 1979-80 timetable for Carlisle PSB, most class 6, 7 and 8 freight trains are about 300 to 400 meters long. But, in the 1977 timetable for Warrington PSB, they are mostly about 200 meters long.Questions is was the actual freight loads book used whilst creating that timetable(which I doubt very much). I've gota May 1975, May 1976, May 1977 & May 1978 freight train loads book in my collection. Those 2 sims share the WCML, but thats about it as on Carlisle trains could run towards the ECML & Newcastle, or over the S&C towards Leeds. The other thing you need to realised that me personally I calculate the length of each train to the nearest metre. Not every TT writer does that & they just create generic lengths which is the case in your example of Warrington. Log in to reply The following user said thank you: jean_gagne_555 |
| Freight trains length 27/09/2022 at 16:52 #148169 | |
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kbarber
1712 posts |
jc92 in post 148004 said:<snip>Some trains would (almost) always run at full length. An example when I was in Willesden Brent was 6P85 to Workington. Others could vary enormously, such as 6M94 to Bescot; sometimes we'd be asking Control to allow overlength (up to 80SLU where the standard limit was 60), other days it would go out with just a dozen wagons. SLU was Standard Length Unit, equal to about 21 feet (the length of an old-fashioned short-wheelbase 4-wheeler). The length was applied to the revenue wagons and, in addition, you were allowed a brake van and up to 2 locos (but you couldn't get away with substituting 3 SLU of wagons for a loco if you weren't double-heading). Log in to reply |