Converting Bachmann On30 cars to O or O27?

There’s always a discussion about the cost of O gauge/O scale somewhere, mostly because it’s hard to find new locomotives for less than $500 and new train cars for under $75. You’d think this was a hobby for trial lawyers and brain surgeons.

One guy pointed out how much bang for the buck he’s getting when he buys On30.

Now, a bit of terminology here. O scale is 1:48 scale. One quarter inch on the model is equal to a foot on the real-world equivalent. O27, the cheaper brother of O scale, is actually 1:64 scale, though it runs on the same track. “Serious” hobbyists often look down on O27, but the nice thing about O27 is it lets you pack a lot more into a smaller space.

So what’s this On30 stuff and what’s the difference between it and regular O or O27 scale?

I’m glad you asked.

On30, On3, and the like refer to “narrow gauge.” Most train track in the United States has its rails 4 feet 8 inches (or 8 1/2 inches) apart. That’s “Standard gauge.” Occasionally, a railroad would lay its track 3 feet apart, or 30 inches apart, or some other measurement narrower than 4’8.5″. This was especially common out west in regions where they had to deal with a lot of mountains. On30 refers to 1:48 scale models of 30-inch gauge trains. On3 refers to 1:48 scale models of 3-foot gauge trains. On2 refers to 1:48 scale models of 2-foot gauge trains. And so on. I’ve talked more about On30 here if you want to know more.

Now it just so happens that the distance between the rails on regular old HO scale track measures out to 31.3 inches in O scale. For most people, that’s certainly close enough. O scalers have been living with track that’s 5 scale feet wide ever since we decided that O scale was 1:48, back in the 1930s or so.

So Bachmann, the makers of the cheap HO and N scale train sets you see in big box stores, decided to take advantage of this convenient accident, make some 1:48 scale cars, put narrow trucks on them, bundle some HO scale track and commercialize On30. So now it’s actually easier in some regions to get a Bachmann On30 train set than it is to get a Lionel O train set.

I found this page on converting Bachmann On30 cars to S scale. What the author did was remove the Bachmann trucks and couplers and substitute American Flyers. Since S scale stuff is even more scarce than regular O scale, this is a slick trick. And, as you can see from the pictures, for the most part the stuff still looks right. Rivet counters won’t like it, but if you’re a rivet counter you’re probably not reading this page anyway. For people starved for inexpensive trains, or for trains, period, they’re fine.

Well, I like my Lionels. I’m not going to convert to On30. But I don’t like Lionel prices. So I build some of my own stuff, and the stuff I do buy, I buy used. So I’ve amassed a pretty sizeable collection, even though I’ve spent a lot less than most hobbyists will spend on a single locomotive.

But I’m always looking for something new and different.

A K-Line passenger car costs $117. A Bachmann passenger car costs $28.

A pair of K-Line freight trucks costs $8. Are you thinking what I’m thinking?

You can’t put freight trucks on a passenger car. That’s what I’m thinking. Freight trucks are different from passenger trucks for some reason. Something about people wanting a smoother ride than cows.

But you get the idea. $36 is a lot less than $117.

K-Line passenger trucks are $25 apiece. That’s more than the car. But $78 is still less than $117, though I’d just live with using freight trucks, myself.

If the S scalers can do it, why can’t we?

Running Marx and Lionel trains together

Someone asked (not me specifically) whether it’s possible or desirable to run Marx and Lionel trains as part of the same layout, what the caveats are, and how to do it.

It seems to be a pretty dark secret. The answer is, yes it’s possible, and yes, it might very well be desirable, but it’s possible to run into some pitfalls.

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Building some cheap train shelves

Needing a place to store my trains, I decided to build some shelves so I could simultaneously store and display them when they’re not on the track. I used materials that I had on hand, exclusively. Other materials would have been better, but I didn’t have them.

I built the shelves on the front of my table. That space is otherwise unused, and four feet of shelf can hold five or six train cars.I used 1x1s to build the shelf supports. I cut them about six inches long, held them up to the table leg, drilled pilot holes, and then screwed them in. I placed them about 5 inches apart, so that the shelves would have enough clearance to comfortably pick up and replace cars.

The shelves themselves are made of 2x4s. Thinner wood would be much better–I could have had another shelf if I’d had anything thinner–but I wanted to use what I had. I have lots of 2x4s and could build the shelves with those in less time than it would take to go to the hardware store. I’ll buy thinner boards the next time I’m out someplace that sells lumber. I still have lots of table space to convert to shelves.

To hold the cars, one could lay a bunch of track on the shelves. Since most hobbyists have lots of track, and many of us had O27 and then upgraded to something else, this would be an economical and true-to-spirit choice.

I didn’t have enough straight O27 track for the job. So I cut 1-inch strips of cardboard, then screwed those to the top of the board. Yes, it’s cheap, but the cars hide the cardboard. One could also use 1-inch strips of balsa or basswood to give a better look.

Or, given the proper tools, one could simply cut two grooves an inch apart lengthwise into the wood.

One advantage of cardboard, wood, or grooves over track is that the cars roll very poorly on it, so cardboard or wood tends to hold the cars in place better.

With the strips secured onto the top of the boards, I then placed the boards on the supports, drilled pilot holes, and then drove one screw into each side to hold it in place.

At some point I will want to replace the wood with something thinner and nicer-looking than pine, and stain it to make it look good. But in the meantime, I have cheap storage for about 16 cars in about four feet of space that had otherwise been going to waste previously, and it only took me about an hour to do it. And it doesn’t look terrible either.

I need to build this in O gauge

I visited the site because the link promised billboards. I got so much more. Now the fine Scot in me really wants to build this box car.

Since my trains are O27, not HO, I can’t use his artwork directly. But his HO scale decals might be suitable for a tinplate 6-inch car like those American Flyer and Marx used to sell, since those 6-inch Marxes basically look like double-height HO cars.This is precisely why I’m not a rivet-counter. Trains are supposed to be fun. This car doesn’t exist in the real world, but it’s fun. The Second Amendment Gun Shop with a sign in the window saying “No weapons allowed” doesn’t exist in the real world, but it’s fun.

I try to keep elements of what I do believable–you won’t see any low-rider Honda Civics running around my layout, which is supposed to look like the 1950s because my trains were built in the ’50s–but since I can’t build models of a specific time and place, what’s the point of getting uptight about whether M-K-T box car 45001 really existed?

But hey. For some people that’s the best part of the hobby. That’s OK. Just don’t try to stop me from having my fun.

Fixing a Marx 490 O27 toy locomotive

Note: Please don’t do what I did in this post. Chances are you’ll make things worse in the long run.  If you’re looking for information on fixing a Marx train that won’t run, go here for instructions on how to do that.

I fixed my Marx 490 locomotive this weekend. I used the tips in The All Gauge Model Railroading Marx Trains guide. Scroll down to the heading titled, “The Marx motor.”

I was skeptical because these instructions call for WD-40, and it seems I’ve read a hundred other places never to use WD-40 on any model train. But my Marx 490 wasn’t running well, and it would cost more to have it professionally repaired than it’s worth.But before I continue, let me interject something. If you’re here from Google because you just found a box of old trains that say “Mar” on them, the company is Marx, not Mar. And the trains look a lot like Lionel, but they’re not Lionel. In a few rare instances, Marx trains are very valuable. But in most cases, a Marx isn’t worth as much as the box a Lionel came in. Which is why I said it would cost more to repair my Marx than it was worth. I just had two Lionels repaired for $25 each, plus parts. You can usually get a Marx 490 with some cars on eBay for $25.

But that’s not to say Marxes don’t have charm. They certainly do.

There. I feel better now. Back to the story. Where was I? Oh yeah. WD-40. I didn’t use WD-40 on my Marx. I used Gunk Liquid Wrench instead. Two reasons: The main purpose behind WD-40 and similar oils is to clean, rather than lubricate. They leave a little bit of lubricant behind, but not a lot. Gunk Liquid Wrench, like WD-40, is primarily a solvent. But it has synthetic oil in it, whereas WD-40 has kerosene in it. In my mind, this makes Liquid Wrench a better choice for this purpose because what little lubricant it leaves behind when the solvent evaporates will be of higher quality and last longer than WD-40’s lubricant.

But there was a second reason. Liquid Wrench was on sale, so it was cheaper. I also thought long and hard about Marvel Mystery Oil in a spray can–it works in cars and airplanes something wonderful–but opted for Liquid Wrench because the instructions called for a penetrating lubricant, and I didn’t know if the Marvel would exhibit the same kinds of properties. I’m a journalist-turned-computer tech by trade, not a chemist.

But first, I tried omitting the WD-40 step and just cleaned it with Goo Gone and TV tuner cleaner. Like I said, every time I turn around I read somewhere that you shouldn’t go near a model train with WD-40. Between the TV tuner cleaner and the Goo Gone, the train looked brand new very quickly. I was impressed. It ran very nicely too, but the next day it didn’t run at all. Figuring that now I had nothing to lose, I broke out the Liquid Wrench.

After a spraydown with Liquid Wrench, it ran too well–it flew off the track and fell 4 feet to my concrete floor. Ouch. That left a mark. One corner of the cab busted off, and it took me a good 15 minutes to find it. After I’d let the locomotive run 20 minutes–with a big load this time, to slow it down and keep it on the track–I re-glued the broken corner with some Tenax-7R plastic welder. Tenax is great stuff–apply a small amount of it, hold the pieces together for a minute, and they’ll stay. It’ll take 8 hours for the joint to completely dry and reach full strength, but after just a minute, the joint is as strong as it would be with every other glue I’ve ever tried on plastic.

Lesson learned: Keep your test track on the floor. Or surround it with pillows. Or use a Marx transformer that can send just a couple of volts on its lowest setting, so slow actually means slow.

The next day, I ran my 490 the opposite direction on my track–the first time I’d ever run a locomotive that direction on the track. And guess what? I found a bad spot on the track. It derailed–again–and the piece I’d glued fell off in spite of the cushions I’d placed all around my table.

Then I remembered that Tenax is amazing stuff if your two pieces fit snugly, because unlike some glues, Tenax doesn’t fill in the gaps at all. The break must not have been clean enough to give the Tenax adequate surface area to create a very strong bond. So I re-glued with epoxy, since epoxy will fill gaps. It held this time.

So now Marxie has a battle scar and he’s probably worth half what he was worth a week ago, but he runs very well. It’s short on ability but long on heart–it struggles pulling loads that won’t make a Lionel break a sweat. But it’ll pull them, and you can see it working hard doing it. And where a Lionel will just give up on a grade with a curve with a long load of cars, the Marx just keeps spinning its wheels, ever faster, until something manages to catch and it propels on its way.

I think that’s what I like about it. It never gives up.

There are a few other things to like about them too. Like I said before, you can buy a Marx locomotive for less than the price of the box a Lionel locomotive came in. Marxes are easy to take apart–mine’s held together by four joints, easily pried apart with a small slotted screwdriver. And the motor is simpler than a Lionel, so it’s easier to understand. If you want to learn how to fix toy trains, Marxes are easy to learn on, and if you mess up, you ruin a $15 locomotive rather than a $100-$1,000 locomotive.

Troubleshooting Marx remote turnouts

Yesterday I hooked up Dad’s old Marx O27 remote turnouts, and again found one of them dodgy.
I can’t find any troubleshooting information about Marx O gauge switches online. I went to the library and checked out all the toy train repair books I could find. Nothing. One of Ray L. Plummer’s books offered advice on repairing Lionel turnouts. But the Marx turnouts are slightly different. Emboldened, I set off on my own.

Before you destroy what little collector value your switches have (The words “switch” and “turnout” are often used interchangeably; forgive me if I try to feed Google to get more traffic), let me tell you how to test them first. All you need your turnout(s) (don’t connect them–just keep them loose), two pieces of wire, and a transformer. I used a 25-watt Marx transformer from an entry-level train set I bought off eBay for $20. This eliminates the control panel, track, and everything else from the equation. Of course, you should use a transformer that you already know to be in working order.

Some transformers have posts for both trains and accessories. Some (like the one I used) don’t. Don’t worry about it; we’ll just use the train posts for this exercise.

Don’t plug the transformer in yet. Run a wire from the center post of the turnout (sometimes labeled “B” or “black,” although not on Dad’s) to one of the posts on your transformer. Connect another wire to the other post, but leave the other end loose.

Now, before you plug in your transformer, please keep in mind that you’re working with electricity and use common sense. Keep your hands dry, don’t do this if you’re bleeding, etc. I’m not responsible for what happens next, OK? If you’ve never done anything like this before, take it to a hobby shop and let a pro handle it–a switch that will cost you $15 on eBay in working order isn’t worth personal injury. Or you can buy a new Lionel or K-Line switch from the local hobby shop for $30-$35. Yes, a 50-year-old Marx turnout is worth less than a new one from Lionel or K-Line. That’s the way it goes sometimes.

Got all that? Good. Still with me? Great. Plug in the transformer. Turn it on. Switches like to run at 16-20 volts AC, so crank the transformer’s lever to full speed. Touch the loose wire to either of the outer posts on the switch. Then pick it up and touch it to the other one. Alternate between the two a few times.

If the accessory is still in working order, the track should change positions based on which post you touched the wire to. If it doesn’t, there’s probably a loose or frayed wire somewhere inside.

If the switch works this way but not when you connect the Marx control panel, your control panel is dodgy. I read on The All-Gauge Model Railroading Page that Atlas controllers for their HO turnouts work fine with Marx O27 turnouts. I also read in the same place that Lionel and K-Line controllers will not.

You can also pick up a Marx control panel on eBay. I saw one sell for $5 this past weekend.

Or if you’re handy with wiring, you ought to be able to fashion your own with a couple of push buttons or momentary switches from your local Radio Shack or equivalent–just make sure whatever switches you buy can handle 20-24 volts of current. (Always over-engineer on this kind of stuff.) If you want to go this route and you’ve never done any model railroading wiring before, pick up one of the books on wiring Lionel/Marx/American Flyer layouts–many hobby shops, larger bookstores, and even a lot of libraries have them–and follow its precautions. I’m not responsible for whatever happens if you go this route.

How do you fix a Marx control panel? It’s held shut by four rivets, so opening it for cleaning isn’t an easy endeavor. I fixed my dodgy control panel by blasting some Radio Shack TV tuner cleaner ($9 for a big can) into the openings, then flipping the unit over a few times to get it circulating, then working all four of the buttons. Seeing as the switch is little more than a couple of handfuls of contact points, there’s a decent chance that’ll take care of you. There really isn’t much inside there that can go wrong.

If TV tuner cleaner doesn’t help, it’s probably corrosion. You can open it up and clean any and all electrical contacts with a piece of 600-grit sandpaper, or fashion replacements from some conductive material (copper foil would be best, but aluminum would work). But you’re on your own from here.

If the switch doesn’t work, period, there’s probably a loose or frayed wire somewhere inside. Fortunately, there are only five wires inside.

Opening the switch’s case is a bit of a chore. It’s held shut by two rivets, easily found by flipping the turnout over and looking for indentations. Disconnect the outside wires and power off your transformer (of course). The proper tool to remove rivets isn’t exactly a household item (at least not in mine), so you can do what I did: Pinch the edges of each rivet with a pair of needle-nose pliers until it pushes through the case. The bottom should then come right off. You’ll notice three screws inside. There should be a wire connected to each. Overzealous loosening of the nuts on the top of the case followed by some jostling can loosen those wires. Tighten the screws (if they’re severely corroded, you might consider replacing them). If any of the wires appear frayed, replace them, or have someone handy with a soldering iron replace them.

If you find wires detached from screws and want to keep it from happening again, you can solder the wires to the screws, but this is probably overkill.

The small box on the top of the switch is held in place by six or so tabs on the bottom of the unit. This houses the electromagnet. You can gain access by gently bending the tabs with a small slotted screwdriver. Check to make sure those three wires are still soldered in place. The biggest place for something to go wrong on a Marx turnout is over by those screws it uses for terminals, however, so chances are there’s nothing wrong over in the electromagnet’s neighborhood.

Closing up shop can be as easy or difficult as you like. Since I don’t care about collector value on a pair of switches that might fetch $25, tops, on eBay, I replaced the rivets with a pair of very thin and short machine screws. If you care about collector value, procure a pair of small brass rivets to replace the two you just ruined.

A more permanent home for Dad’s Lionel

Gatermann and I spent the afternoon building a train table. I started building one about a month ago but got too busy to finish it. Today was the day I’d set aside to get some work done on it.

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