What Railroad Defect Detectors Do

This is my basic understanding of what defect detectors do. How they work. And why they're crucial to modern railroad operations.

Пікірлер: 1 900

  • @michiganrailfanfilms353
    @michiganrailfanfilms353 Жыл бұрын

    This video has become more relevant than ever given the East Palestine, Ohio derailment, the only way the crew knew something was wrong was the DD giving a defect warning, it was too late though...

  • @michaelblair5566

    @michaelblair5566

    4 ай бұрын

    They IGNORED the warnings however.

  • @bagenstb
    @bagenstb Жыл бұрын

    The drone footage has brought this channel to the next level. Well done Danny!

  • @nowake

    @nowake

    Жыл бұрын

    Just have to be mindful to keep it away from any employees while they're working. Ultimately I don't think the railroad would allow it if they knew about it... if the drone goes down and lands on the tracks, as it would lead to trespassing to retrieve it, or who knows what worries they'd have if it were left there.

  • @stevelaminack1516

    @stevelaminack1516

    Жыл бұрын

    @@nowake The railroad does not control the air space above their trains but the FAA does. Per FAA you can't fly over vehicles, I would assume that includes trains.

  • @Vinemaple

    @Vinemaple

    Жыл бұрын

    Yeah, a lot of visual interest and shots you can't safely or legally get oneself.

  • @ArtiePenguin1

    @ArtiePenguin1

    Жыл бұрын

    The drone is a great idea and allows the safe capture of footage without trespassing on the tracks or putting your life at risk.

  • @sun622

    @sun622

    Жыл бұрын

    It takes rail fanning to a whole new level. (no pun intended).

  • @Perseus109
    @Perseus109 Жыл бұрын

    In light of recent events, this is a great refresher for all of us. I am glad I found it again. I do wonder if the last detector you showed is in use up there. Thanks Danny!

  • @onceuponatimeonearth
    @onceuponatimeonearth Жыл бұрын

    I literally haven't cared about trains since I was 10 but this video from a random youtube recommendation was straight up interesting to watch and extremely well made.

  • @railfaningstocktonsub290
    @railfaningstocktonsub290 Жыл бұрын

    Great video as always, The videos never gets boring. Danny Harmon makes the greatest videos, keep it up.

  • @AmtrakFan6905

    @AmtrakFan6905

    Жыл бұрын

    Yeah

  • @rherman9085

    @rherman9085

    Жыл бұрын

    When I hit the Like before the video starts..... says it all. I have enjoyed each & everyone of his videos. I learn so much.

  • @bradleysmith6442

    @bradleysmith6442

    Жыл бұрын

    I have tried watching other videos of other railfanners, just not the same without Danny.

  • @jameschristiansson3137

    @jameschristiansson3137

    Жыл бұрын

    Best of the best.

  • @jeffrumbach150

    @jeffrumbach150

    Жыл бұрын

    Hello Danny. Just wanted you to know that the Atlantic coastline going north of Ocala from N.W 56th Street to County Road 329 the relay casses for the railroad crossing gates have been deactivated and abandonment has happened the scale house in Kendrick has removed and the spur has been removed

  • @TowerClimber81
    @TowerClimber81 Жыл бұрын

    Defect Detector -“Your videos have no defect - repeating, no defect! Another great production Danny! Thanks for sharing! 👍

  • @beeble2003

    @beeble2003

    Жыл бұрын

    I demand an axle count.

  • @bluegrassman3040

    @bluegrassman3040

    Жыл бұрын

    @@beeble2003 total axles, one four, two five. Detector out.

  • @Vinemaple
    @Vinemaple Жыл бұрын

    I'm no kind of genuine rail fan, but it's great to know freight trains have this ubiquitous little system! Also, the video wasn't boring, not even to me, and that's pretty impressive. Probably you're pacing it just right, and have good information density. Plus, the drone shots and radio captures add a lot of interest.

  • @distantsignal

    @distantsignal

    Жыл бұрын

    That's a very nice compliment. Many thanks!

  • @jovetj

    @jovetj

    Жыл бұрын

    It's never too late to become a railfan. Trains are mighty, massive, and mystical. And just fun to watch and darn impressive under the hood!

  • @ColonelStraker

    @ColonelStraker

    Жыл бұрын

    @@distantsignal I just shared this video on DEFECT DETECTORS on Roman's news coverage of the recent MASSIVE CHEMICAL SPILL which authorities are blaming on a HOT BOX AXEL fire. This channel should jump on the breaking story with your expertise. kzread.info/dash/bejne/oYpnrZKDf63Vp6g.html

  • @JamesEley123

    @JamesEley123

    Жыл бұрын

    @@distantsignal Echo the above, new sub here. This is gold :)

  • @ImieNazwiskoOK

    @ImieNazwiskoOK

    Жыл бұрын

    @Jovet Also efficient

  • @danahesse905
    @danahesse905 Жыл бұрын

    Danny, from my engineer sister who works for CSX and is in charge of their Train Inspection Portal program featured at 11:15 in the video: "Those devices at 3:50 aren’t wheel impact load detectors. They are magnetic wheel sensors to help the Hot Bearing Detector know when to measure the heat." Keep up the great videos!

  • @sunnydayhobbies
    @sunnydayhobbies Жыл бұрын

    You never fail to entertain AND teach. Thanks for doing this. Keep 'em coming!

  • @51hankyspanky7

    @51hankyspanky7

    Жыл бұрын

    Danny is the BEST of the BEST.

  • @fredcarr3550

    @fredcarr3550

    Жыл бұрын

    Really good stuff, well presented👏

  • @brucybabyy7355

    @brucybabyy7355

    Жыл бұрын

    edutainment!

  • @ColonelStraker

    @ColonelStraker

    Жыл бұрын

    Indeed. And I just shared this video on DEFECT DETECTORS on Roman's news coverage of the recent MASSIVE CHEMICAL SPILL which authorities are blaming on a HOT BOX AXEL fire. This channel should jump on the breaking story with their expertise. kzread.info/dash/bejne/oYpnrZKDf63Vp6g.html

  • @tomy6917
    @tomy6917 Жыл бұрын

    Hi Danny, great video! At time mark 3:50 the pair of small boxes mounted to the rail are the Magnetic Transducers that senses the wheel flanges passing over them (no physical contact is made). As the metal wheel flange passes over a transducer entering its magnetic field, it causes an AC voltage of about half a volt to be produced and tells the scanner to start collecting infra-red samples for the wheel bearing & when the flange passes over the 2nd transducer it stops collecting infra-red samples & this process repeats for each wheel flange. And as someone else had commented, the transducers also performs the axle count & makes train speed calculations.

  • @ebnertra0004

    @ebnertra0004

    Жыл бұрын

    CN uses them to get direction, as well

  • @tomy6917

    @tomy6917

    Жыл бұрын

    @@ebnertra0004 Yes, there is a drop down menu that allows you to select what info you wish to have transmitted which includes train direction, speed, outdoor temperature, axle count, wind speed (I never knew the reason for wind speed) & train length.

  • @ebnertra0004

    @ebnertra0004

    Жыл бұрын

    @@tomy6917 I think there are some places with high wind detectors, especially in the mountains, but I don't know if they're incorporated into detector sites or standalone (either is possible, I suppose)

  • @tomy6917

    @tomy6917

    Жыл бұрын

    @@ebnertra0004 Oh cool, thank you. I have seen videos in the past showing a wind vane on the roof of the Defect Detector's equipment house.

  • @jovetj

    @jovetj

    Жыл бұрын

    @@ebnertra0004 'Ya learn something new every day!

  • @trevormckay677
    @trevormckay677 Жыл бұрын

    I have never felt a more genuine "please hit the like button" in my life. This man must be protected

  • @alexwolfeboy
    @alexwolfeboy Жыл бұрын

    While trains aren’t really my thing, I could listen to you talk about them for hours. Just a nice voice to listen to. Reminds me of listening to How It’s Made.

  • @davidlund7712
    @davidlund7712 Жыл бұрын

    Danny, I have been an avid watcher of your uploads for about 3 years. They are so reminiscent of the old Pentrax videos of the late 1980s and 1990s but will better resolution! Your narration is spot on and so professional. Keep up the great work.

  • @xaviercrum6625
    @xaviercrum6625 Жыл бұрын

    Danny makes the most interesting train videos out there.

  • @RT-qd8yl
    @RT-qd8yl Жыл бұрын

    I just want to say how much I enjoy and appreciate your videos. You remind me so much of my grandfather; he was a section foreman for C&O, Chessie, and then eventually CSX. He was the one who started my love of trains, and I spent so many weekends as a kid going to his house and listening to his stories, looking at pictures and slides he took, and watching old train films. He had so many from when the Steam Special came to town, and I thought that locomotive was just SO cool. He's no longer with us, but watching your videos gives me that same feeling I had back then with him and makes me feel like a little bit of him is still around. Thank you so much for what you do.

  • @gillianmiller9710

    @gillianmiller9710

    Жыл бұрын

    your comment brings back memories of my grandfather; he was an engineer for L&N back in the steam engine days

  • @abdulkaderthabit
    @abdulkaderthabit Жыл бұрын

    I normally don't write comments but this video made me so happy to watch it!

  • @Andrewreedphotography
    @Andrewreedphotography Жыл бұрын

    Nice Video Danny! It’s nice how you describe how something works on the railroad such as defect detectors and them being used in real life on the railroad!

  • @BigBones2109
    @BigBones2109 Жыл бұрын

    I love your videos! I live in Western New York State between Rochester and Buffalo. I'm a truck driver and the yard where I park my truck is right up against the CSX mainline that runs East-West across NY. I believe it is Ex- NY Central track and also Ex- Conrail after the NYC sold out. I remember seeing Conrail locos when I was growing up in the '90s. My grandfather had a beef farm and the small feed store we used to get supplements for the cows from had its own siding! Needless to say I have been a rail fan from an early age.

  • @CarsSimplified
    @CarsSimplified Жыл бұрын

    That inspection portal is pretty interesting! As far as I know, I've never seen one of those before. Very cool sign addition in this video! Very thoughtful of the fan!

  • @jimjimmyjam8242
    @jimjimmyjam8242 Жыл бұрын

    I've been a carman for 2 different railroads for 14 years and I never knew how these detectors work. Nice video 👍

  • @sunjamm222
    @sunjamm222 Жыл бұрын

    Hi, I use to maintain the UK versions of the those Railtrack Defect Detectors. That last one is miles ahead of what we got. But all ours are sent to the SIgnalbox or control centre for that area. So the train crews never see anything of what been printed out.

  • @ColonelStraker

    @ColonelStraker

    Жыл бұрын

    Indeed. And I just shared this video on DEFECT DETECTORS on Roman's news coverage of the recent MASSIVE CHEMICAL SPILL which authorities are blaming on a HOT BOX AXEL fire. This channel should jump on the breaking story with their expertise. kzread.info/dash/bejne/oYpnrZKDf63Vp6g.html

  • @ColtonRMagby
    @ColtonRMagby Жыл бұрын

    The next video should be on high-rail vehicles. I'd love to know more about them.

  • @jovetj

    @jovetj

    Жыл бұрын

    What do you want to know?

  • @ColtonRMagby

    @ColtonRMagby

    Жыл бұрын

    @@jovetj The history behind them, like who came up with the idea.

  • @jovetj

    @jovetj

    Жыл бұрын

    @@ColtonRMagby Well, those are good questions. There is only sporadic information I can find on the internet about it. From what I see, the first automatic or semi-automatic detectors came about in the 1940s.

  • @davidberchtold3859
    @davidberchtold3859 Жыл бұрын

    I love your videos featuring different aspects of the railroading industry. For many years, there was a rail line that directed freight trains through my neighborhood, about one city block from my house. Around the year 2001, a large section of the railroad tracks were removed along with the signals and the custodian shacks at the intersections. I miss the trains, and the memories associated with them. I really miss waving at the guys in the cabooses. I feel as though a large part of my childhood is gone, never to return, and it bothers me as I see my neighborhood dying.

  • @davep6977
    @davep6977 Жыл бұрын

    Very informative. When I worked in a steel mill we used to call them "pusher cars" They were a skeleton car with just a frame and a cat walk down the middle to get from the engine to the next car so you didn't have to get off the train. They were mainly used with cars with hot slabs or ingots to keep the glowing red steel away from the engine

  • @christiansrailfanning3168
    @christiansrailfanning3168 Жыл бұрын

    This is cool! I hear these a lot while railfanning and it was great to learn more!

  • @williamshorter559
    @williamshorter559 Жыл бұрын

    Good to hear the best narrtor in rail fanning, i really look forward to hear the history & technicalities of the rail system in his area, great job danny.

  • @Alexrocksdude_

    @Alexrocksdude_

    Жыл бұрын

    I think he also narrates videos for FDOT! I heard a familiar voice at a FDOT presentation recently.

  • @09VMM
    @09VMM Жыл бұрын

    Wow what a video of absolutely highest quality. The Voiceover, the shots, explanation of the technical details. This is just something I have a passive interest in but I love that people are so dedicated to it. What a great channel. Makes me want to get back into model railroad again

  • @jovetj

    @jovetj

    Жыл бұрын

    Model railroading is fun but expensive. Virtual railroading (e.g. train simulation games) can be a good compromise for some, and it's easier on the wallet. There are several such games to choose from, each with its own strengths and weaknesses.

  • @nicklambing9268
    @nicklambing9268 Жыл бұрын

    I greatly appreciate the positive tone of this channel. I have watched off and on for several years, the narrative is always upbeat and enjoyable. A lot of very good information is found here, both by Danny Harmon and commenters. Well done! Nick, North West Farmer

  • @rockymountainjazzfan1822
    @rockymountainjazzfan1822 Жыл бұрын

    Some additions and corrections: More and more railroads are adopting "talk-on-defect-only" detectors to reduce radio "chatter" on the road channels. In my area, most defect detectors now only "talk" if the detector does, in fact, find a defect. In mountainous areas, there can also be "slide detectors" that will audibly report rock or mudslides on the track over the road radio channel. In such areas there are wire fences--called "slide fences" adjacent to the track in slide-prone areas. If mud or rock break any of the wires on the fence, it trips the detector. Similarly, areas of track prone to flash flooding can have "high water" detectors that will trip if flood waters reach the track. Finally, about the "buffer" cars on hazmat tank trains. Usually, the rear buffer car (and sometimes two buffer cars near the middle of the train) are there for when distributed power units are used on the train. Typically, the buffer cars will remain on a unit train, so that they do not have to be added enroute when DP is needed.

  • @currentfaves65

    @currentfaves65

    Жыл бұрын

    Talk on Defect Only sounds like a bad idea. The detector could be down for weeks or months before it gets inspected. I mean, there is not that much chatter on railroad coms.

  • @Stant123

    @Stant123

    Жыл бұрын

    It's only a bad idea if you foolishly haven't taken that into account. In the simplest of set ups, every time a train passes, all of the detectors are supposed to be working, if the system fails to receive a signal from one of the detectors, it can radio the train that it needs repaired and let the train radio the report in. They also have the ability to self diagnose even if a train hasn't used it in a while, as a computer only has to monitor the flow of electricity to each detector and if the circuit is broken or the voltage return is outside of what is expected, it knows the detector or the wires connecting the detector to the computer have gone bad and can generate a report that way. In a more advanced set up, if it is connected with a phone line, or to a cellular network, or even through satellite in the most remote of locations, you can also have a "home base" call into the DD computer at regular intervals or an operator in a control center can manually trigger a check like they do with automated switches and if the "home base" or control room operator doesn't get a response from the DD, or an incomplete response, or a bad/failure report, a manual inspection order can be issued to repair the problem.

  • @bluegrassman3040

    @bluegrassman3040

    Жыл бұрын

    @@currentfaves65 it all depends on what area you’re in. Some railroads have more radio traffic than others. For example, if there’s a DD near a yard, it can tie up traffic, or other traffic can cover its transmission.

  • @k1mgy

    @k1mgy

    Жыл бұрын

    @@Stant123 Doesn't account for the failure of the radio system. A better design would at least ID with "NO DEFECTS".

  • @currentfaves65

    @currentfaves65

    Жыл бұрын

    @@bluegrassman3040 Yep, I live in Cincinnati so radio traffic on the scanner is light. I forgot all about the massive yards in other states !

  • @royreynolds108
    @royreynolds108 Жыл бұрын

    Danny, I would like to offer a small correction to your description of the journal boxes on the trucks. They were packed with "waste" or later with a foam-filled pad that was soaked in journal oil instead of grease. The waste or pads were so fixed that they wiped the bottom of the axle under the journal brass to convey oil to the axle to carry to the brass for lubrication. The journal oil was usually called summer black oil and it was black all right and messy. I usually helped repack the journals of the trucks of the Huckleberry RR passenger cars during the winter. The use of SAE30 oil was also done by some railroads. I can remember seeing a smoking and burning journal on a KCS train heading to the yard from the south of Shreveport on several occasions. When all of the oil was gone is when a hot journal was the most dangerous; the brass and axle got so hot as to lose integrity and break causing a derailment. Before roller-bearings on passenger cars, a substance that emitted a strong odor was added to the oil to help detect hot journals.

  • @Bassotronics

    @Bassotronics

    Жыл бұрын

    Thank You! ☺️

  • @davidfurrer3869

    @davidfurrer3869

    Жыл бұрын

    @@Bassotronics aa

  • @RussellPecka
    @RussellPecka Жыл бұрын

    Holy moly. Definitely expected that this video was going to be informative but was not expecting how good the presentation and quality is. Nice video

  • @alexmelia8873
    @alexmelia8873 Жыл бұрын

    Hi there. I wouldn’t consider myself a rail fan per se, mainly dabble in aircraft but I find anything with an engine fascinating. This came up in my recommended and I learned so much, I can’t stop watching. Your voiceover and production techniques make this about as good s any documentary on TV. You’ve earned my sub!

  • @distantsignal

    @distantsignal

    Жыл бұрын

    Many thanks, Alex!

  • @jovetj

    @jovetj

    Жыл бұрын

    Mr. Harmon is the best. Trains are a fun, fascinating, frustrating, fun, fantastic subject and hobby. Watching a train go by and realizing the power and physics involved for everything on those two tiny rails gives you some respect for everyone who works in the industry. Mr. Harmon's video library is one of the best resources on the internet for new and old railfans alike.

  • @Spencerlovestrains25
    @Spencerlovestrains25 Жыл бұрын

    Great video, Danny, as always! I will have to correct you on some info that those little stubs on the inside of the rails aren't impact detectors. They're actually transducers that count the axles, measure speed and calculate train length. Impact detectors usually are found sparsely on a line, and usually have concrete ties and sensors along the rails, along with AEI readers. CSX's actually use a female voice and say "CSX impact detector". Also, fortunately, pre-recorded voices are still a thing on modern DD's. However, a detector like the one at Stokes is a synthesized computer voice, it's all over on my local NS line.

  • @gigglesseven

    @gigglesseven

    Жыл бұрын

    if you're lucky enough, you'll find a famous voice pre-recorded in some of the radio boxes on the union pacific and pan am line. the voice is Majel Barrett-Roddenberry. reportedly there's only a few left in Maine that bear her voice to this day edits cause i'm tipsy....

  • @jovetj

    @jovetj

    Жыл бұрын

    @@gigglesseven The Enterprise computer lives on!!

  • @PrenticeBoy1688

    @PrenticeBoy1688

    Жыл бұрын

    @@gigglesseven This is a disputed claim. I read something earlier this year that identified the voiceover actress, and it wasn't Barrett. This might be an urban legend.

  • @PrenticeBoy1688

    @PrenticeBoy1688

    Жыл бұрын

    @@gigglesseven I found the thread on trainorders. A user claimed that the voice widely believed to be Barrett was actually a professional voiceover artist called Katherine Reynolds who apparently worked for NBC.

  • @gigglesseven

    @gigglesseven

    Жыл бұрын

    @@PrenticeBoy1688 oooh, thank you. some info is very buried and easily overlooked

  • @travishurd7619
    @travishurd7619 Жыл бұрын

    Absolutely love this video! I'm a bnsf carman apprentice learning too fix and inspect freight cars, the detectors make our life easier and better, being able too find a defect on the train that is flagged speeds up down time and makes these trains safer

  • @craffte

    @craffte

    Жыл бұрын

    Well, you're it because I'll never work this into conversation anywhere else. I watch a lot of PBS and the song that accompanies BNSF Railways is my favorite ever. Silly, I know. Ok thanks, I'll see myself out.

  • @dripguy
    @dripguy Жыл бұрын

    Thank you Professor Harmon. I feel like I have taken a class on railroad knowledge every time I watch your videos.

  • @upking9080
    @upking9080 Жыл бұрын

    The defect detector is an integral component of American railroading. Each day countless accidents are prevented by these safety devices. Great video!

  • @MAGronemeyer
    @MAGronemeyer Жыл бұрын

    I was always curious about defect detectors, and I found this video fascinating! I'd like to see a video on flange greasers and their purpose. I thoroughly enjoy watching your videos on trains and how the railroad actually functions! It's obvious that I find trains to be fascinating to watch, and I love the sound of a set of air horns mounted atop of the locomotives!

  • @general5104

    @general5104

    Жыл бұрын

    Our system played with Flange Lube (spot greasers), but decided that sand mixed with the grease and caused more grief for equipment than it was worth, so they were removed. Perhaps another company has found a way to use the little dollop of grease that is shot out onto the flange, when it is in a tight curve. I don't know, but the co. I worked for, had us to un-install all of them and put the axle generators back in stock for speed use only.

  • @MustangsTrainsMowers
    @MustangsTrainsMowers Жыл бұрын

    I became a defect detector in the fall of 2018 waiting for a UP train to finish passing. I first heard, then saw the wheel on one freight car missing about 1/3rd of the flange. Since the line was CWR the sound from the broken wheel stood out from the train going down grade. I called the UP emergency number very shortly after the train passed and I could see the number on the box by the crossing. You don’t want a tanker with hazardous chemicals in a derailment.

  • @RandomUser2401

    @RandomUser2401

    Жыл бұрын

    why th do they use this horrible outdated way of voice reports? Digital data over wireless links are much more reliable and accurate and exist for decades.

  • @straightpipediesel

    @straightpipediesel

    Жыл бұрын

    @@RandomUser2401 The principle of keep it simple, stupid. They have to listen to the radio anyway. Your idea would require yet another gadget that needs to be installed in every train, it can break, has to have updated software, somebody's going to be distracted poking around in and miss a signal, added cybersecurity concerns, etc. etc. Anyway, in modern defect detectors, non-critical defects aren't announced. Things like images, wheel profiles, bogie geometry, predictive alerts are correlated with the railcar information from AEI, uploaded to servers, and somebody analyzes and views them later and schedules maintenance as necessary.

  • @RandomUser2401

    @RandomUser2401

    Жыл бұрын

    @@straightpipediesel In Europe these systems are completely integrated into electronic control stations, fully automated and fail-safe. Axle counts are automatically checked against the one reported from the dispatcher and so on. In a defect case, signals will automatically stay red/closed. With this system all it takes is one guy to miss a radio call and you have disaster. Not even mentioning the often horrible audio quality, making it hard to hear what even is going on. You are mistaking simple with proper.

  • @straightpipediesel

    @straightpipediesel

    Жыл бұрын

    @@RandomUser2401 The "horrible audio quality" doesn't exist because the unit is transmitting literally next to the receiving train. In another example of KISS, radios run simplex, not those overly-complex GSM-R/NRN things you have in Europe. And no, you don't have "disaster". This is not high-speed, or even passenger rail where a derailment sends people to their death in a bridge. This is low-speed cargo rail, where on average, 4 derailments occur in the US per day. The low cost is balanced with the low risk level, again applying KISS.

  • @RandomUser2401

    @RandomUser2401

    Жыл бұрын

    @@straightpipediesel 4 derailments per day is a very very bad statistic, showing again how little money is invested into proper infrastructure. GSM-R is used for VERY good reason as it can, again, properly secure rail traffic. GSM-R is nothing new but used for decades. And a derailed fright train can cause A LOT of damage to both people and property. Just because there are no people on the train does not mean no people are endangered.

  • @nwrnortheast
    @nwrnortheast Жыл бұрын

    I travel frequently on Amtrak and always wondered what that meant when I heard it on the walkie-talkies constantly. Love this video! It’s very well put together.

  • @distantsignal

    @distantsignal

    Жыл бұрын

    Glad you enjoyed it!

  • @BrianBaldridge
    @BrianBaldridge Жыл бұрын

    Mr. Harmon, I have learned much from your channel and just when I begin to think I might have a good grasp on things, you come out with another amazing video. Thanks for all you do and I look forward to each and every thing you produce.

  • @PowerTrain611
    @PowerTrain611 Жыл бұрын

    Every new video, there's a new sign on that fence! Good to see you again, Danny. I really enjoy your videos! One small correction: The journal boxes housed very thick oil, not grease. The oil was soaked into a sponge with some springs inside and a mop-head like material on the outside. This was known as "waste" because it used to be a big was of cloth waste, and could be replaced with such in a pinch. The plain bearing inside the journal box was lubricated by the oil soaked up by the waste and would need to be periodically filled. If the oil ran out, the bearing would heat up and could possibly catch fire if it wasn't caught in time (that's why cabooses had cupolas!) and with old wooden train cars, that was never a good thing. Hence the term "hotbox". Now a term used by pot smoking teenagers, the reason for the coining of the term is still the same - identified by a plume of smoke emitting from the journal box.

  • @jongregory5594
    @jongregory5594 Жыл бұрын

    The best railfan channel on KZread! Thanks Danny!

  • @donchaput8278
    @donchaput8278 Жыл бұрын

    Great video! Never knew those existed! I would say the numbering on the flaps is just for maintenance on the flaps, so they know which one to fix if there is a problem.

  • @unti419
    @unti419 Жыл бұрын

    I grew up along a train track. We played around the tracks all the time, though adults would tell us the train would suck us under if we got too close. I loved the sound of the freight trains at night. About a half mile away was a siding where trains would puff off to let another train pass. There was a small wooden building that had an old crank phone that I assumed was connected to all the overhead wires that were along the tracks. It had a big railroad padlock on it but was never locked. The ditch behind it was covered with old 6 volt batteries. We loved climbing those signal light towers and watch a train go by. Once we found some old steel roller skates and built a frame with 2x4s that would roll on the tracks. Memories long forgotten. Now trains are just an annoyance at crossings, though some of the art work is interesting. Thanks for the memories.

  • @SouthernIllinoisRailfan
    @SouthernIllinoisRailfan Жыл бұрын

    Another excellent production, Danny! Defect detectors are one of my favorite aspects of railfanning. I have a whole collection of audio recordings of various defect detectors from the past three years on my phone. That list is continuously growing every day.

  • @southcarolinagrizfan1594
    @southcarolinagrizfan1594 Жыл бұрын

    Thank you Danny for the video. Being a railfan for so long, you have helped me understand the rail system so much more.

  • @rcamusementvending1510
    @rcamusementvending1510 Жыл бұрын

    The flappers are likely numbered because they were removed at some point for some type of maintenance, and they wanted to make sure each one was put back where it was when removed. I’ve done stuff like that before when there’s multiple parts on something I’m taking apart.

  • @roberthumphrey1304
    @roberthumphrey1304 Жыл бұрын

    Nice explanation of one of the safety factors for the railroads. Some of our government officials need to view this along with the talking heads that claim to be news reporters. Thanks for the video.

  • @20molecula
    @20molecula Жыл бұрын

    I saw this video today and hadn’t watched one for awhile. It reminded me of how informative you are. Thanks Danny. Oh, and I like what Nathan did for you with the Harmon Rd street sign.

  • @MITracks
    @MITracks Жыл бұрын

    Some of these are also combined with AEI tag readers to make them one stop shops to gather all of the information about the train. Great video, always enjoy them.

  • @davebartosh5
    @davebartosh5 Жыл бұрын

    I came back to re-watch this after the catastrophic derailment in Ohio. Turns out there was a bad bearing that was overheated, and also a defect detector that might have alerted the crew was also broken.

  • @jeffrumbach150

    @jeffrumbach150

    Жыл бұрын

    The importance of routine maintenance even on defect detectors !!!!!!!

  • @StaticM223
    @StaticM223 Жыл бұрын

    This is the first time when a KZreadr has asked me as a viewer to like and subscribe and i 100% just did

  • @timtraver7152
    @timtraver7152 Жыл бұрын

    Our local Norfolk Southern trains in upstate NY have been using the digital voice detectors for some time now, I like them as we can tell a train is arriving soon by the voice on the detector. There is one about 3 miles uptrack from where we watch trains, it tips us off to an impending train, which is nice. The EOTD is also nice as it has a range of 3 or so miles, from what I was told, and the "chirp" they make is another tip off to an impending train. Thanks for another great video Danny!

  • @MoodyBlue42..
    @MoodyBlue42.. Жыл бұрын

    Danny!! Love the CSX High/Wide detectors because it usually has all of the detectors present (High and Wide, dragging equipment, hot box) I had someone tell me about how the high wide works. All the roads have in their database the dimensions of every car used. If anything is outside of those dimensions it sets it off.

  • @lmmplus4
    @lmmplus4 Жыл бұрын

    Love your channel and your passion for trains. Learned a lot with this video, especially with what happened recently with E Palestine , OH and the derailment there...very sad that even happened with such catastrophic results.

  • @richardstern9295
    @richardstern9295 Жыл бұрын

    Excellent video. Should be required viewing for all the reporters after the recent wreck in Ohio.

  • @andross51
    @andross51 Жыл бұрын

    Danny your videos never cease to amaze me with these videos! "The Legendary Cheering Railfan" always enjoys them! Great video as usual!! :)

  • @SD40Fan_Jason
    @SD40Fan_Jason Жыл бұрын

    That inspection shed there at Race Pond is cool new technology! I bet railfans would love to tap into that photo stock, ha! Anyway I just wanted to say thank you for posting another excellent video, and congrats on the Harmon Rd sign, that surely added to your collection. On the buffer cars, you mentioned that the plant may hook on to the train with terminal power. In addition to that, sometimes the train may need to perform a runaround once it reaches its terminus. It's a zillion times easier to just uncouple the head engines and snap them on the tail. Also in some more rugged terrain they might connect helper DPU on the bottom. OR they may also attach another train to the bottom, with their lead power becoming mid-train DPU. With the time alotted in your video, you covered the basics and that should be clear enough that there's buffer cars on each end so the train can be handled from either end, regardless of which way it's actually traveling. Finally I think we talked briefly about visiting Columbus GA sometime. If you're still up for that, please let me know. I won't be in GA much longer but I would gladly make the trip back to guide you! EDIT: Oh yeah and those numbers on the DD slap plates so they could disassemble and reassemble them. Similar to the way you might mark head bolts on an engine when you disassemble and reassemble them, so that you put the bolts back in the same holes each time.

  • @varrick1226
    @varrick1226 Жыл бұрын

    I never knew about this until I heard about it at the catastrophic accident in Ohio but your video here explains it in great detail. Thanks.

  • @drunkenfrog
    @drunkenfrog Жыл бұрын

    The production quality in these videos is top notch. Thanks for taking the time to make these.

  • @SWFLElevators
    @SWFLElevators Жыл бұрын

    I've always been a big fan of defect detectors and their voices. They amuse me. Cool video explaining the science behind them, they are so cool.

  • @gcorriveau6864
    @gcorriveau6864 Жыл бұрын

    Great drone camera shots! Very educational - thanks! I'm so old ... I was working as a signalman's apprentice back in the day when we were installing the first examples of train monitoring technology - the hot box detectors! ;-)

  • @edwardwinner1301
    @edwardwinner1301 Жыл бұрын

    Defect detectors can serve as hot box detector, hot wheel bearing detector, high water detector, dragging equipment detector, high/wide load detector, sliding fence detector. I was with Harmon Industries from 1989 to 1995.

  • @EmilC2012
    @EmilC2012 Жыл бұрын

    Thank you for the wonderful video Danny! They're always a wonderful treat whenever they bless my feed!

  • @jasmannygonzalez7462
    @jasmannygonzalez7462 Жыл бұрын

    Keep up the good work on these videos and I can’t wait to see more train videos and please keep them coming and 5/5 as always +Distant Signal aka Danny Harmon and your videos never disappoint.

  • @johnsweeney9031
    @johnsweeney9031 Жыл бұрын

    I worked for the Chessie System in the ‘80s. Standard practice then was to do rolling inspections. Train crews, car inspectors, and clerks were expected to take time and carefully watch the moving train to check its condition. Definitely “old school”, to this day when I am trackside, I find myself checking the train for defects. Old habits never seem to die!

  • @distantsignal

    @distantsignal

    Жыл бұрын

    Ha! I'll bet not, John. You guys did a lot more work back then. Thanks for sharing.

  • @tcvideosennistexas

    @tcvideosennistexas

    Жыл бұрын

    there are very,very few,,if any to watch trains anymore,,,,,,, what a shame and what a lack of safety.

  • @wellyup7879
    @wellyup7879 Жыл бұрын

    Great content. As a Tampa resident I always find Danny's content super enlightening. Real asset to the region.

  • @Bobs2cents
    @Bobs2cents Жыл бұрын

    Keep the great videos coming! From one rail fan to another, your enthusiasm is infectious. I learn so much watching your channel. Thanks!

  • @blt2haul
    @blt2haul Жыл бұрын

    Thanks, Danny. Appreciate the time and effort you put in to your videos. They are as professional as can be.

  • @geeceediam4566
    @geeceediam4566 Жыл бұрын

    I so look forward to your videos - you never assume that all of us watching your videos know and understand what we are looking / hearing. Thanx so much for sharing what you know (and, more importantly, letting us know when you don't know something and don't try to make it up or speculate) and doing it in a courteous and gentle manner. Keep up the GREAT work.

  • @bizzlemedia
    @bizzlemedia Жыл бұрын

    I love the level detail, and the fact that you have been able to capture the voices of different detectors over the years. As a radio and railway fan, this video ticked all my boxes. Thank you :D

  • @workingguy6666
    @workingguy6666 Жыл бұрын

    My word - I wouldn't have thought I would have liked this subject, but you are SO GOOD at presenting it. Then, in the middle of the video I learn about the 'old man's voice' and your preference for that communication. Really added depth to the video, and I wonder who that man was.

  • @kd5qgy
    @kd5qgy Жыл бұрын

    Good video as usual Danny. The main reason hazmat trains have a rear buffer car is because when the trains are loaded, they’ll have a DPU on the rear. Railroads have found it easier to always keep one of those cars on the rear even if there isn’t a DPU for switching like you said when they get to the loading point.

  • @scottmccullough6136
    @scottmccullough6136 Жыл бұрын

    Another amazing and educational video, great job as always Danny. I've seen the train inspection station several times on my way to and from Folkston from Waycross and often wandered what it might be, so thanks for educating all of us. Keep up the great work and as always i'm looking forward to the next video.

  • @kwlanco2714
    @kwlanco2714 Жыл бұрын

    with the recent derailment in Ohio, I found this video, very informative.

  • @RobertJohnson-nk6mz
    @RobertJohnson-nk6mz Жыл бұрын

    Thanks Danny. I greatly appreciate you teaching us about the finer points of railway jargon and equipment.

  • @pcdoctor2003
    @pcdoctor2003 Жыл бұрын

    Mr Harmon I'd love this video about the defect detector I've been watching your channel for many years now it seems like and you always come up with something new that I didn't know for the longest time thank you so much for doing these videos and I gave this a thumbs up thank you Danny

  • @rbu500
    @rbu500 Жыл бұрын

    I enjoy your videos. You do such a good job of making them interesting and educational. Thank you.

  • @railgap
    @railgap Жыл бұрын

    "stuffed and mounted" - you have a delightfully deadpan sense of humor in your writing / delivery - LOVE IT!

  • @coorbin
    @coorbin Жыл бұрын

    The defect detector on the MARC Camden Line woke me from my morning nap about 90% of the time when I was riding to College Park for university over 10 years ago. It would play on the conductor’s radio as he would come by and take tickets. I usually had a monthly that I could put up in the seat pocket but I’d open my eyes to nod at him. I can remember the soothing hum of the A/C, the professionalism of the crew, the rare “event” when things broke down, sleeping past my stop, and so many great conversations with fellow rail fans who took the train to work. I never knew what the defect detector was. Now I know. Thank you for helping me learn this tidbit about my young adulthood. This channel always makes me smile.

  • @414RadioTech
    @414RadioTech Жыл бұрын

    Well Danny I got to hand it to you you did it again I love these videos because they're very educational I get asked all the time what that is and I have to explain that it's a defect detector every time people hear that in the restaurant that I go to that's right next to the tracks I always bring my commercial radio with me so I don't miss any train traffic

  • @losi5ivet29cc
    @losi5ivet29cc Жыл бұрын

    If you ever decided to release a DVD series I would buy it in a heartbeat I love watching your videos!

  • @buddyboy66
    @buddyboy66 Жыл бұрын

    Love your stuff, Danny. I learn many new things every time i watch! Thanks for all you do.

  • @johncopple7128
    @johncopple7128 Жыл бұрын

    Enjoyed watching this video and learned much about how detectors have evolved through the years. Thanks Danny.

  • @wavemaster447
    @wavemaster447 Жыл бұрын

    Love the videos! New to your channel but really love these types of videos that focus on a single topic and explain it in depth.

  • @jovetj

    @jovetj

    Жыл бұрын

    Welcome, sir! I'm sure you're binge watch them all!

  • @kevinkavanagh4479
    @kevinkavanagh4479 Жыл бұрын

    Hi Danny, another well edited video, carefully crafted script, and as always "professional voice inflection" with just the right stuff!!!! We just returned from our family vacation yesterday (Saturday, Aug 20, 2022) and first time ever with our brand new thirty foot pull-behind style RV travel trailer (Forest River Avenger model). We pulled to Kelley's Island (Lake Erie, Ohio) located among the islands where Commodore Oliver Perry led the American naval victory over the British on Sept 10, 1813 (War of 1812) and Kelley's Island is within sight of the "Perry's Victory & International Peace Memorial" that stands 352 feet in honor of those that lost their lives in the Battle of Lake Erie. Reason for the Ohio location description; is that we pulled the trailer through Bellevue, Ohio on the way from Kelley's Island to Grand Lake St Marys (Ohio) State Park to visit the National Musuem of the U.S. Air Force in Dayton before returning to Massachusetts. It was awesome to pass thru Bellevue, Ohio (named in honor of James Bell who built railroads), home to the largest hump yard in the East, (Moorman Yard, Norfolk Southern) and multiple mainlines. We got to see the Moorman Yard's hump in operation! Experienced Bellevue, Ohio's rail industry with a long freight train at the grade crossing for State Route 18. Bellevue, Ohio is a rail town with a connection to your Florida...as Henry Flager left Hopewell, NY at age 14 in 1844 to seek his fortune with his Uncle's grain business in Bellevue, Ohio. As one of my all-time favorite radio broadcaster always said at the end. "...and now you know the rest of the story." Keep up the informative, well scripted & narrated videos! You have the gift of presentation!Kevin Kavanagh from Maynard, Massachusetts.

  • @edwardroberts2997
    @edwardroberts2997 Жыл бұрын

    Mr. Harmon, Coming from East Hartford,Connecticut Been rail fanning for some 50 years now I am a 81-year-old who has been to the Curve and Selkirk, NY, many times now because the price of gas and being on a fixed income can't do it any longer so thanks to your video,s witch are GREAT now I can still watch Great video,s again THANKS VERY MUCH,Ed

  • @stanwhite5135
    @stanwhite5135 Жыл бұрын

    Another informative video with a comforting voice. Nice to hear from you Danny!

  • @BenjaminGib
    @BenjaminGib Жыл бұрын

    Wow thank you, Danny, for your super pro videos and production quality. As an editor in broadcast TV for many years, I really appreciate your top quality production and informational content. It’s like I’m watching a great PBS series of yesteryear.

  • @distantsignal

    @distantsignal

    Жыл бұрын

    That's much appreciated, Ben. Compliments from a broadcast editor are the highest kind of praise for me. I've been in TV news and promotion for 44 years.

  • @rickthorp8363
    @rickthorp8363 Жыл бұрын

    This was a very interesting video! I work with the FAA VIDS (Video Information Display System), and a portion of this system uses synthesized audio to report weather, airport information, and other items pilots need when departing/arriving into airports. It's mostly automated, and repeats just like this equipment does.

  • @jibguy2003
    @jibguy2003 Жыл бұрын

    Outstanding photography, writing and presentation! Thank you.

  • @Steve-xf4uv
    @Steve-xf4uv Жыл бұрын

    Another great Distant Signal video; I now know a lot more than I did yesterday about D.D's . Danny, you've made railfanning much more interesting now that we know what a lot of this equipment is and what it does. No more just watching trains we know what we're seeing. Thanks a bunch your videos are the best.

  • @davidkalbacker6033
    @davidkalbacker6033 Жыл бұрын

    Like - I think your videos are some of the very best non professional videos on KZread in general. All your technical aspects are superb: sound, variety of camera angles, variety of camera types and lighting. In addition, your information is terrific, Throughly presented, easy to understand and with a bonus bit of info mixed in for good measure. In this video it was info about “buffer cars.” Part of my career in communications included a brief period as an adjunct college lecture on crisis communications. If I was in the classroom these days I would most certainly use examples of your videos to show young communicators how to get the job done. Kudos to you my friend. Keep these amazing videos coming. Warm Regards, David Kalbacker

  • @jovetj

    @jovetj

    Жыл бұрын

    Absolutely!!!

  • @mmi16
    @mmi16 Жыл бұрын

    I retired from CSX at the end of 2016 - so things may have changed. Trains passing over DD's at less than 10 MPH would frequently get the message "Detector Malfunction, Inspect entire train". A big bummer for the Conductor. Wheel Impact Load Detectors are only installed at a number of strategic locations on the CSX system. WILD's don't radio the train, they send a report to the Headquarters Car Department office in Jacksonville. The WILD's report one of 4 different levels of flat wheels. The first level is 'the wheel is round'. The second level indicates that the wheel does have a flat spot, but no action is required at this time. The third level requires the car to be inspected by the train crew and if found safe for movement, it can be taken to the destination terminal for wheel replacement. The fourth level requires the car to be inspected by the train crew and to be SET OUT on the nearest available track. The HQ Car Dept. notifies both the Train Dispatcher and the Chief Train Dispatcher for the cars that activate at either the 3rd or 4th levels. The Train Dispatcher will notify the train when a WILD activation happens. The Car Dept. will arrange for a local 'shop truck' to go to the set out location of 4th level activations to replace the offending wheel set(s). I have seen cars activate level 3 and go to destination and hot have the wheel set changed out; go back to origin empty and register as a level 2 and then come back loaded again and activate a level 4. The HQ Car Dept. reports the offending cars by car initial and number; not by axle count.

  • @Xsiondu
    @Xsiondu Жыл бұрын

    This was an amazing video. Thank you for sharing your enthusiasm and knowledge.

  • @helenhutchins4547
    @helenhutchins4547 Жыл бұрын

    Danny..so informative. Like a weigh station for trains. Very cool. At least the engineer won't get a fix-it ticket like in trucking. Good work.

  • @RonLaws
    @RonLaws Жыл бұрын

    This was super interesting, i never knew these things existed, i've seen small 'sheds' like these in the UK too but no idea of their probable purpose until now; always assumed they were part of dispatch such as junction control or signalling, or just part of tracking the trains overall, didn't know about the track sensors and radio feedback though!

  • @jovetj

    @jovetj

    Жыл бұрын

    There are multiple kinds of detectors. Dragging Equipment and Hot Journal detectors are the most common, but there are others. A UP line near me used to have several different kinds of detectors spread out, many of which I don't even know what they detected. See: 41.48091972658172, -95.88437844404777 Looks like there are two left, plus an AEI scanner. The one at those coordinates looks to have been expanded with fancy cameras similar (if scaled down) to the last one in the video here.

  • @noahdavidson8733
    @noahdavidson8733 Жыл бұрын

    Danny does it again. I always wondered who did the voice for the recordings for DDs, I didn’t know that they were synthesized. The New York City subway system also has a prerecorded voice, but they’ve interviewed the gentleman who did the recordings.

  • @blkbass
    @blkbass Жыл бұрын

    This was an incredible video. My wife and I very much enjoy your work.

  • @Mrcaffinebean
    @Mrcaffinebean Жыл бұрын

    You have a voice made for narration! Always love learning more about the rails that keep this country moving!