International Railroad Discussion > Log train C176 (Brazil)

Hi today morning I went to ENG yard with a friend and we found VLI C176 log train coming slowly to give time for Vale limestone train C104 leave the section ahead.

Pedro

Pedro Rezende
Vespasiano MG,




Edited 1 time(s). Last edit at 07/22/18 17:05 by pedrop.

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90 log cars make it a big train in this area.

Pedro Rezende
Vespasiano MG,
https://youtube.com/c/minasgeraisrailways1

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Waiting licence near a crossing level at ENG yard. 
I will add a link to a video soon.

Pedro Rezende
Vespasiano MG,
https://youtube.com/c/minasgeraisrailways1



Edited 2 time(s). Last edit at 07/22/18 17:08 by pedrop.

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pedrop Wrote:
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> 90 log cars make it a big train in this area.

I’m curious as to why bolts are used instead of spikes or tie clips to fasten the rails.

Great stuff Rezende! !

YY

zorz Wrote:
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> pedrop Wrote:
> --------------------------------------------------
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> > 90 log cars make it a big train in this area.
>
> I’m curious as to why bolts are used instead of
> spikes or tie clips to fasten the rails.

I will take a stab at this. The railroads where built by Euopeans, and in Europe, the rails are screwed down to the ties. All over Europe on older lines, track screws are used. Only modern lines have concrete and clips to hold.  https://upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Railroad_spikes.JPG/200px-Railroad_spikes.JPGRusted cut spikes (scale in inches)https://upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Spike_001.jpg/200px-Spike_001.jpgDog spikeA rail spike (also known as a cut spike or crampon) is a large nail with an offset head that is used to secure rails and base plates to railroad ties (sleepers) in the track. Robert Livingston Stevens is credited with the invention of the rail spike,[6] the first recorded use of which was in 1832.[7] The railroad spike was an invention which resulted from the state of industrialisation in the United States in the early 19th century: English mainline railways of that period used heavy and expensive cast iron chairs to secure T-shaped rails; instead, Stevens added a supporting base to the T rail which could be fixed with a simple spike.[8][9] In 1982, the spike was still the most common rail fastening in North America. Common sizes are from 9⁄16 to 10⁄16 inch (14 to 16 mm) square and 5 1⁄2 to 6 inches (140 to 150 mm) long.[10]:582-3https://upload.wikimedia.org/wikipedia/commons/thumb/2/2a/HejazSpike.jpg/220px-HejazSpike.jpg Railroad spikes of the old Jezreel Valley railway (part of the Hejaz Railway), found near Kfar Baruch(Israel).A rail spike is roughly chisel-shaped and with a flat edged point; the spike is driven with the edge perpendicular to the grain, which gives greater resistance to loosening.[11] The main function is to keep the rail in gauge. When attaching tie plates the attachment is made as strong as possible, whereas when attaching a rail to tie or tie plate the spike is not normally required to provide a strong vertical force, allowing the rail some freedom of movement.[10]:455,581-2On smaller scale jobs spikes are still driven into wooden sleepers by hammering them with a spike maul. Though this manual work has been largely replaced by hydraulic tools[12] and machines, commonly called "spikers" (A machine that removes spikes is called a "spike puller").[13] Splitting of the wood can be limited by pre-boring spike holes or adding steel bands around the wood.[10]:455For use in the United States three basic standards are described in the ASTM A65 standard, for different carbon steel contents.[14]A dog spike is functionally equivalent to a cut spike and is also square in horizontal section and of similar dimensions, but has a pointed penetrating end, and the rail (or "plate holding") head has two lugs on either side, giving the impression of a dog's head and aiding spike removal.[15]  https://upload.wikimedia.org/wikipedia/commons/thumb/6/68/Rail_bolt.jpg/220px-Rail_bolt.jpg Rusted chair screwhttps://upload.wikimedia.org/wikipedia/commons/thumb/5/56/Rusty_Railroad_Spikes_3008px.jpg/220px-Rusty_Railroad_Spikes_3008px.jpg Chair screw(French: Tire-fonds)A chair screw is a large (~6 in or 152 mm length, slightly under 1 in or 25 mm diameter) metal screw used to fix a chair (for bullhead rail), baseplate (for flat bottom rail) or to directly fasten a rail. Chair screws are screwed into a hole bored in the sleeper.[16] The chair screw has a higher cost to manufacture than the rail spike, but has the advantage of greater fixing power - approximately twice that of a rail spike[17] - -and can be used in combination with spring washers.[16]The chair screw was first introduced in 1860 in France (French tire-fond) and became common in continental Europe.[18]A dog screw is a tradename variant of the screw spike.[19]

The rails on mainline use tirofonds to hold the plates and elastic clips to hold the rails to the plates. But is some sidings or spurs we see just the tirefonds holding the rails and plates at the same time, since these are tracks for low speed.

The tracks in Brazil follow US standards, not european. The first railroads were built by british companies from the 1850's to 1870's, but since than followed US standards.

Posted from Android

Pedro Rezende
Vespasiano MG,
https://youtube.com/c/minasgeraisrailways1

Here it is the link to the videohttps://youtu.be/kw-QG6WeN1w

Posted from Android

Pedro Rezende
Vespasiano MG,
https://youtube.com/c/minasgeraisrailways1