Unknown Track Device

Discussion in 'FAQs' started by TrainClown, Dec 16, 2004.

  1. TrainClown

    TrainClown Member

    So I was down at the CN yard up the street the other day and I noticed this strange device on the track. It is on the spur that the engines are stored on. I have my suspicions, but could someone please tell me what this is for. Is it just to lock the track or is there more to it.
    Here are a few views. Thanks. TrainClown :wave: [​IMG]
  2. McFortner

    McFortner Member

    Well, if I had to guess I would say it is a derailer. But we'll have to wait for those in the business to speak up.

    Of course, I'm basing it all on the sign in the 2nd picture... :rolleyes:

  3. papio

    papio New Member

    I'm not in the business either, however I agree that it's a derail. The fact that it lies over the top of the rail + has the placarded "D" sign next to it, and the fact that it's on the engine servicing track are pretty good indicators as to its purpose.
  4. SteveJ

    SteveJ New Member

    Got to go with the majority here. Appears to be a derail.
    Also interesting is that it appears to be installed on the ties of a removed switch.
  5. Fred_M

    Fred_M Guest

    Yeah that's a derailer TC. BTW that's what that sign with the bid D means. The mechanism is so they can be lowered (swung in). Fred
  6. billk

    billk Active Member

    Gee - I thought it had something to do with DCC.
  7. Joepomp

    Joepomp Member

    The club

    Its the Club for Locos. Anti theft device :D
  8. SAL Comet

    SAL Comet Member

    OK, I'm gonna be the dummy that asks why would they want to derail a loco?
  9. Fred_M

    Fred_M Guest

    If an crew ran an engine into one of them they might as well just call their wife to come get them. LOL They are there to protect the mainline from freight cars on the siding rolling or being pushed onto the mains and causing extra work or worse, a bad accident. There is another tool (a ramp) that the derailed car can be rerailed with if this device does its job, no need for cranes. Fred
  10. jim currie

    jim currie Active Member

    looks like a by directional derailer opperated by fliping one down between rails and that in turn pulls the other one back .
  11. Freelancer

    Freelancer Member

    Another reason that it is on the engine spure is to protect any crew that may be working on a locomotive parked there, don't want any equipment coming in and connecting to a loco with a blue flag on it.

  12. Dragon

    Dragon Member

    Depending on which direction this is set to derail. My suspicion would be if an idling loco *somehow* manages to become a runaway, this will kick them off the line before they foul the main.
  13. RailRon

    RailRon Active Member

    This is quite a clever contraption. :thumb:

    Surely it is a one-direction-derail. When you look at the second and third pic, it derails anything running from left to right. This way it protects the turnout out of the picture at right from any loco or car which tries to roll out of the stub, dumping it to the near side of the track.

    But on the other hand it also acts as a stopping block for anything coming from the right - without derailing it. Judging from the scraped off paint it was used not too long ago.

    A little more puzzling is the fact that also the derail tongue on the far track looks pretty worn. But the other, big block with the handle doesn't show any scars. So how many times has this derail really been used so far?

    Did you note the padlock which prevents any fooling around? After opening and removing it you can swing the block to the inside of the track. At the same time the link rod will open the derailing tongue.

    Now this would be quite a challenge to model - say in Nn3! :D :D :D

  14. Hoghead

    Hoghead Member

    I was unable to see the pic, but from the description it sounds like a derail.

    There are various types of derails from the flop over types to split rail derails to temporary portable derails.

    Where I work there are split rail derails used to prevent equipment from going into the drink when the moveable bridge is open for ship traffic. These derails are automatic and are operated remotely by the operator/dispatcher.
  15. 60103

    60103 Pooh Bah

    May I suggest that the long ties in the picture are not from a switch, but from the previous derail. There is another style where the cast block would be lifted on and off the rails by a switch stand, with a big target on it. I have a couple of models of this; they were sold as "Hayes derails" (by Model Engineering Works?)
    This is the first one I've seen with two castings.
  16. TrainClown

    TrainClown Member

    Thanks guys.

    So if it is for derailing a train, how difficult is it to put an engine or rolling stock back on the track? Seems like it would be time to call a crane. Or is there another device for putting a train back on the tracks?

  17. Fred_M

    Fred_M Guest

  18. RailRon

    RailRon Active Member

    On narrow gauge railroads derailments were quite common. So almost all of the engines carried a pair of rerailers with them. In most cases they were hung onto the frame of the tender.

    In this pic you can see a rerailer on a K-36 tender of the D&S tourist RR (red arrow). Probably it is the same as shown in the Nolan website - see Fred's link.


    Attached Files:

  19. Goattee

    Goattee Member

    The FRA has a rule about de-rails, I forget the exact wording but any track that has any access to a shop or work facility must have these. On the IC (CN) if work has to be done on the main line or somewhere like that portable de-rails that clamp to the rail have to be placed 300 (I believe) feet and a blue light or flag on each end of the consist. At the roundhouse each pit or bay has one. All de-rails have to be locked and only the roundhouse personal are supposed to have keys. And yes they can be jumped from the un-protected direction---been there done that. As to the re-railers these monsters were slung from the under frame, one on each side usually near the jack pads. These were a mess to use and each one weighed about 200lb.
  20. dhutch

    dhutch Member

    yeah, thats what i think its for, anything trying to go out onto the main line get derailed, away from the main (not just in any direction)

    - i dont believe its designed to work in thw other direction at all (eather to drail, or to allow things to passed un affeced)

    - i think the missing paint is just from when its (open) and resting (upsidedown) on the sleepers (see the notch it the sleeper)


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