North American Field Guide To Rail Cars

Trains are one of the oldest and most reliable ways we have of transporting things and people over long distances. But how often do you think about trains? Where I live, they can clearly be heard every hour or so. I should be used to the sound of them by now, but I like it enough to stop what I’m doing and listen to the whistles almost every time. In the early morning quiet, I can even hear the dull roar as it rumbles down the track.

I recently got a front row seat at a railroad crossing, and as the train chugged through the intersection, I found myself wondering for the hundredth time what all the cars had in them. And then, as I have for the last twenty or thirty years, I wondered why I never see a caboose anymore. I figured it was high time to answer both questions.

 

Image via GBX

Boxcar

Boxcars are probably the most easily identifiable after the engine and the caboose.

Boxcars carry crated and palletized freight like paper, lumber, packaged goods, and even boxes. Refrigerated box cars carry everything from produce to frozen foods.

Boxcars (and barns for that matter) are traditionally a rusty red color because there were few paint options in the late 1800s, and iron-rich dirt-based paint was dirt cheap.

 

Flat car with bulkheads. Image via YouTube

Flat Car

Standard, no-frills flat cars are the oldest types of rail cars. These are just big, flat platform cars that can carry anything from pipe, rail, and steel beams to tractors and military vehicles.

Flat cars come in different lengths and are also made with and without bulkheads that help keep the cargo in place. Some flat cars have a depression in the middle for really tall or heavy loads, like electrical transformers.

 

Image via Ship Cars Now

Auto Rack

As the name implies, auto racks carry passenger cars, trucks, and SUV from factories to distributors. They come in two- and three-level models, although there have been specialized auto racks over the years.

Perhaps the strangest auto rack of them all was the Vert-a-Pac. When Chevrolet came up with the Vega in the gas-conscious 1970s, they wanted to be able to move them as cheaply as possible, so they shipped the cars on end. If you’re wondering about all the fluids in the car when they were upended, a special baffle kept oil from leaking out, the batteries were capped, and the windshield washer fluid bottle was positioned at an angle.

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Speaker Snitch Tattles On Privacy Leaks

A wise senator once noted that democracy dies with thunderous applause. Similarly, it’s also how privacy dies, as we invite more and more smart devices willingly into our homes that are built by companies that don’t tend to have our best interests in mind. If you’re not willing to toss all of these admittedly useful devices out of the house but still want to keep an eye on what they’re doing, though, [Nick Bild] has a handy project that lets you keep an eye on them when they try to access the network.

The device is built on a Raspberry Pi that acts as a middle man for these devices on his home network. Any traffic they attempt to send gets sent through the Pi which sniffs the traffic via a Python script and is able to detect when they are accessing their cloud services. From there, the Pi sends an alert to an IoT Arduino connected to an LED which illuminates during the time in which the smart devices are active.

The build is an interesting one because many smart devices are known to listen in to day-to-day conversation even without speaking the code phrase (i.e. “Hey Google” etc.) and this is a great way to have some peace-of-mind that a device is inactive at any particular moment. However, it’s not a foolproof way of guaranteeing privacy, as plenty of devices might be accessing other services, and still other devices have  even been known to ship with hidden hardware.

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This Automated Wire Prep Machine Cuts And Strips The Wire

We’ve seen a fair number of automated wire cutting builds before, and with good reason: cutting lots of wires by hand is repetitive and carries the risk of injury. What’s common to all these automated wire cutters is a comment asking, “Yeah, but can you make it strip too?” As it turns out, yes you can.

The key to making this automated wire cutter and stripper is [Mr Innovative]’s choice of tooling, and accepting a simple compromise. (Video, embedded below.) Using just about the simplest wire strippers around — the kind with a diamond-shaped opening that adjusts to different wire gauges by how far the jaws are closed — makes it so that the tool can both cut and strip, and adapt to different wire sizes. The wire is fed from a spool to a custom attachment sitting atop a stepper motor, which looks very much like an extruder from a 3D-printer. The wire is fed through a stiff plastic tube into the jaws of the cutter. Choosing between cutting and stripping is a matter of aiming the wire for different areas on the cutter’s jaws, which is done with a hobby servo that bends the guide tube. The throw of the cutter is controlled by a stepper motor — partial closure nicks the insulation, while a full stroke cuts the wire off. The video below shows the build and the finished product in action.

Yes, the insulation bits at the end still need to be pinched off, but it’s a lot better than doing the whole job yourself. [Mr Innovative] has a knack for automating tedious manual tasks like this. Check out his label dispenser, a motor rotor maker, and thread bobbin winder.

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