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tryhard_boffin
Beginner
Joined: Aug 06, 2008
Last Visited: Aug 6, 2008
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Posted: Wed Aug 06, 2008 5:18 pm
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What the typical payload of a freight train like the ones that run in Australia with >1km of carriages trailling along?
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derekmorton
Train Controller
Joined: May 11, 2003
Last Visited: Dec 1, 2008
Location: DVR Eltham, Vic
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Posted: Wed Aug 06, 2008 6:23 pm
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5000 tons
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409
Minister for Railways
Joined: Jul 25, 2004
Last Visited: Dec 1, 2008
Location: "Well, we sorta hit a little snag when the universe sorta collapsed on itself."
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Posted: Thu Aug 07, 2008 3:36 pm
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It really does depend on the axle loading of the line as well as the load density. Using some South Australian examples:
Barossa stone train: 2000t - 2500t, 18 - 25 wagons, 250m - 400m (rough guess).
MP9/PM9: 5000t - 5500t, 75 - 85 wagons, 1600m - 1750m
SA standard gauge grain train: 3500t - 4000t, 35 - 40 wagons, 1200m - 1400m
SA narrow gauge grain train: 1500t - 1800t, 30 - 40 wagons, 500m - 600m
Leigh Creek coal train: 14,000t - 16,000t , 150 - 167 wagons, 2800m - 3100m
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Johnmc
Moderator
Joined: Oct 21, 2003
Last Visited: Dec 2, 2008
Location: Cloncurry, Queensland
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Posted: Thu Aug 07, 2008 3:49 pm
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Mineral trains on the Mt Isa line usually clock in at about the 4000t for 800m mark. Usually about 3200t of that is product.
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awsgc24
Minister for Railways
Joined: Feb 18, 2003
Last Visited: Dec 1, 2008
Location: Sydney, NSW
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Posted: Thu Aug 07, 2008 3:56 pm
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| 409 wrote: | It really does depend on the axle loading of the line as well as the load density. Using some South Australian examples:
Barossa stone train: 2000t - 2500t, 18 - 25 wagons, 250m - 400m (rough guess).
MP9/PM9: 5000t - 5500t, 75 - 85 wagons, 1600m - 1750m
SA standard gauge grain train: 3500t - 4000t, 35 - 40 wagons, 1200m - 1400m
SA narrow gauge grain train: 1500t - 1800t, 30 - 40 wagons, 500m - 600m
Leigh Creek coal train: 14,000t - 16,000t , 150 - 167 wagons, 2800m - 3100m |
MP9/PM9 would be limited by large numbers of 1800m crossing loops.
Leigh Creek coalies would presumably be the only train on the line, and doesn't need to cross anything, so short crossing loops wouldn't matter.
SA narrow gauge trains might be limited by crossing loop length, but info is not to hand.
Train loads would be affected by steep grades but info on SA grades is not to hand.
Very sharp curves might also be a factor as they can pull intermediate waggons off the rails. This might be a factor in NSW on say North Coast line with 240m curves and 1 in 40 grades.
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M636C
Chief Commissioner
Joined: Aug 18, 2005
Last Visited: Dec 1, 2008
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Posted: Thu Aug 07, 2008 4:00 pm
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The heaviest trains currently running are the BHP Billiton iron ore trains on the Newman line and branches. These regularly run with 336 wagons of 115 tonnes nominal capacity, thus 38 649 tonnes payload, maybe 46 368 tonnes trailing load. This would be hauled by a minimum of six locomotives of about 200 tonnes each.
In fact the loads could be greater by 10% or so. The wagons are just over 10 metres long and the trains would be over 3.5 km long.
M636C
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409
Minister for Railways
Joined: Jul 25, 2004
Last Visited: Dec 1, 2008
Location: "Well, we sorta hit a little snag when the universe sorta collapsed on itself."
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Posted: Thu Aug 07, 2008 6:04 pm
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| awsgc24 wrote: | SA narrow gauge trains might be limited by crossing loop length, but info is not to hand.
Train loads would be affected by steep grades but info on SA grades is not to hand.
Very sharp curves might also be a factor as they can pull intermediate waggons off the rails. This might be a factor in NSW on say North Coast line with 240m curves and 1 in 40 grades. |
The grain trains on the Eyre Peninsula are limited to around 600m length on average because the yard at Port Lincoln can only take an 800m long train at best.
Using MP/PM9 again as an example, the train length is normally cut down to around 55 wagons or so and an extra loco or two is added at either Tailem Bend or the AFT for the trip over the Adelaide Hills. That would result in a load of between 3000t and 3800t. The ruling grade is 1 in 45 with 200m curves although the uncompensated gradient between Belair and Mt Lofty would be 1 in 37.
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xr554
Assistant Commissioner
Joined: Apr 25, 2005
Last Visited: Dec 2, 2008
Location: Ashton S.A.
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Posted: Thu Aug 07, 2008 7:02 pm
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Will, all
MP9's from Melbourne can be up to 60 wagons and around 4600t.
MP9's North can be up to 78 wagons 6000t.
South line grains can usually run at 40 hoppers, 3500t and around 800m.
North line grain can be around 50 hoppers and up to 4000t.
Most of the Pac Nat super freighters don't usually get over 75w or 3300t.
MP9's an GP1's are usually the heaviest general freight trains in Australia at around 6000t as i said.
Cheers, hope this is what your looking for.
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Maaaark
Deputy Commissioner
Joined: Feb 28, 2003
Last Visited: Dec 1, 2008
Location: Adelaide, SA
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Posted: Fri Aug 08, 2008 6:27 am
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Maximum for Stonie (26 hoppers @ 80t each) 2,080t and about 315m
GWA grainies are either 76t or 92t gross per hopper, depending where they run (branchline or mainline)
eg. 40 hopper Pinnaroo grain 3,040 or 50 hopper Gladstone grain 4,600t and about 700-800m
The average weight for Melbourne-Perth (all operators) trains would probably be around the 3,000t mark I'd imagine.
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