| How many train derailments did we get in 1976 then? (n/t) 17:16 - Aug 14 with 704 views | NthQldITFC |
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| How many train derailments did we get in 1976 then? (n/t) on 17:23 - Aug 14 with 669 views | Cheltenham_Blue |
Wasn't as hot in 76 though.
Problem that year was an exceptionally dry winter and spring followed by an exceptionally dry and warm summer. |  |
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| How many train derailments did we get in 1976 then? (n/t) on 17:26 - Aug 14 with 643 views | BloomBlue |
That's because we had British Rail then and it was so cr&p trains hardy ran, especially with unions on strike as it was too hot.
Plus diesel engines then much heavier trains less likely to jump if a track moves. Need to go back to diesel trains. |  | | |
| How many train derailments did we get in 1976 then? (n/t) on 17:48 - Aug 14 with 536 views | flykickingbybgunn |
The problem with the track buckling is that before they used rails of short lengths which allowed for thermal expansion.
The new ones are all welded into very long lengths to stop all that clickety clack. But when it gets hot there is nowhere for the line to expand into so it buckles.
Modern rail engineers are clearly very intelligent stupid people. |  | | |
| How many train derailments did we get in 1976 then? (n/t) on 17:51 - Aug 14 with 523 views | earlsgreenblue |
| How many train derailments did we get in 1976 then? (n/t) on 17:26 - Aug 14 by BloomBlue |
That's because we had British Rail then and it was so cr&p trains hardy ran, especially with unions on strike as it was too hot.
Plus diesel engines then much heavier trains less likely to jump if a track moves. Need to go back to diesel trains. |
Might be something to do with solid rails as opposed to split length rails, the latter had an expansion gap but than was noisy & wore out quickly.. |  | | |
| How many train derailments did we get in 1976 then? (n/t) on 18:38 - Aug 14 with 418 views | flykickingbybgunn |
| How many train derailments did we get in 1976 then? (n/t) on 17:51 - Aug 14 by earlsgreenblue |
Might be something to do with solid rails as opposed to split length rails, the latter had an expansion gap but than was noisy & wore out quickly.. |
Great minds think alike. | | | |
| How many train derailments did we get in 1976 then? (n/t) on 19:02 - Aug 14 with 353 views | armchaircritic59 |
Is that relevant to anything? Please advise. Yes I was there in " 76 ". |  | | |
| How many train derailments did we get in 1976 then? (n/t) on 19:09 - Aug 14 with 327 views | Trequartista |
Six actually. |  |
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| How many train derailments did we get in 1976 then? (n/t) on 20:24 - Aug 14 with 225 views | Oldsmoker |
| How many train derailments did we get in 1976 then? (n/t) on 17:48 - Aug 14 by flykickingbybgunn |
The problem with the track buckling is that before they used rails of short lengths which allowed for thermal expansion.
The new ones are all welded into very long lengths to stop all that clickety clack. But when it gets hot there is nowhere for the line to expand into so it buckles.
Modern rail engineers are clearly very intelligent stupid people. |
Some expansion joints are not butt-welded together.
The ends are tapered and designed to slide past each other.
Think of a rectangle of 3 feet by the width of the rail.
Draw a line from opposite corners and cut into 2 triangles.
This allows the rails to slide past each other. |  |
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| How many train derailments did we get in 1976 then? (n/t) on 20:46 - Aug 14 with 198 views | floridablue |
I've seen the news about the 2 recent derailments and apart from hearing that high heat can buckle the rails, I know nothing! Can anyone explain why I'm not aware of that happening here in the swamplands of Florida where the heat is often above 100f. | | | |
| How many train derailments did we get in 1976 then? (n/t) on 20:46 - Aug 14 with 194 views | BloomBlue |
| How many train derailments did we get in 1976 then? (n/t) on 17:48 - Aug 14 by flykickingbybgunn |
The problem with the track buckling is that before they used rails of short lengths which allowed for thermal expansion.
The new ones are all welded into very long lengths to stop all that clickety clack. But when it gets hot there is nowhere for the line to expand into so it buckles.
Modern rail engineers are clearly very intelligent stupid people. |
"Clickety-clack, clickety-clack, here comes the train on the railroad track!"
I remember kids saying that. | | | |
| How many train derailments did we get in 1976 then? (n/t) on 20:54 - Aug 14 with 157 views | Oldsmoker |
| How many train derailments did we get in 1976 then? (n/t) on 20:46 - Aug 14 by floridablue |
I've seen the news about the 2 recent derailments and apart from hearing that high heat can buckle the rails, I know nothing! Can anyone explain why I'm not aware of that happening here in the swamplands of Florida where the heat is often above 100f. |
You can produce steel that has a higher resistance to heat but it's expensive.
The higher the heat the more expensive.
The UK budgeted for about 27C as hot summers in the UK only became a thing 5 years ago.
Replacing the rails with higher heat-resistant steel will keep our newly nationalised steel industry busy for years. | |
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| How many train derailments did we get in 1976 then? (n/t) on 21:44 - Aug 14 with 77 views | giant_stow |
| How many train derailments did we get in 1976 then? (n/t) on 20:54 - Aug 14 by Oldsmoker |
You can produce steel that has a higher resistance to heat but it's expensive.
The higher the heat the more expensive.
The UK budgeted for about 27C as hot summers in the UK only became a thing 5 years ago.
Replacing the rails with higher heat-resistant steel will keep our newly nationalised steel industry busy for years. |
Learn something every day. |  |
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