Latest Acquisitions – Part II

September 28, 2024November 27, 2024 barkmannLeave a comment

It had been nearly a year since we added to our equipment roster, until our recent addition of a Mikado, described in our first installment. This time around, it’s an Aristocraft Pacific. It’s as good a deal as could be found. Not as good as the Mikado, but close. It’s a little more expensive and a little less impressive, but only because it’s the early version with plastic side rods and such.

It does have the original sound system in the tender, and it still works. It’s missing the whistle and the bell, but the bell harp is still there. It does have the “cow catcher”, unlike the Mikado. The one big feature it sports is it’s in the B&O Royal Blue livery. And like its ten wheeler predecessor, it’s a bit on the wobbly and unreliable side. But there’s hope for it. It should be fine after a much needed tune up.

Being the early version, it still has the “glowing firebox” feature, no longer present on the more recent Mikado. Best I can tell, the Pacific is pre 2003 and the Mikado 2003 or later. The difference is the Mikado has an added Battery vs. Track Power switch stacked with the Motor On/Off switch in place of the glowing firebox door in the Pacific.

The Pacific has Motor On/Off on the cab floor, along with the Lighting On/Off switch, also on the floor of the Mikado. The Pacific placed the Smoke On/Off switch at the front of the engine on the pilot frame. The Mikado has its Smoke On/Off switch on the cab floor, opposite the Lighting switch.

Initial Findings

I did manage to find the manual and more information on various large scale sites. It appears to match the “Old Pacific” manual. And now my searches are turning up the ART-5400 PWM controller for use with it. Still haven’t found the “magic words” for the search to find the waveforms. But then again, that was probably a closely guarded bit of secret information (read intellectual property) when they were still in business.

I won’t go into all the details of our foray into PWM motor controllers here. It’s pretty much covered elsewhere. The long and short of PWM, for me anyway, is the annoying buzz at anything in the audible frequency range, and the lack of response from any built in constant lighting circuitry at any frequency greater than a few kilohertz.

Considering this locomotive also sports its own track powered sound system, not sure how Aristocraft managed to get the PWM concept to work, let alone together with it. It does require a fair amount of voltage before anything works. IIRC, the wheels didn’t even start turning until around 8V.

We Have Sound

It took some doing to figure out how this sound board works. When I first opened the hatch on the tender looking for a battery, not only did I not find one, I didn’t even see the 9V battery clip laying inside there on the very bottom. It became very apparent when I removed the tender shell to get a look at what was going on inside.

At first glance I can tell this is old technology, likely from the ’90s judging by all the discrete components surrounding four Dual Inline Package (DIP) style integrated circuits. One’s a quad comparator op amp, one’s a decade (÷10) counter, another’s a hex inverter/buffer, and finally a dual channel audio amplifier. I finally got rid of most of my DIP style parts recently, deciding I’d never be using parts that were at least 30 years old in any design.

Of course the first thing I have to do is look up which post is which on a 9V battery so I can attach the bench supply with the correct polarity. Let’s try not to let out the magic smoke, shall we? So with that knowledge in hand, I power on the bench supply and… Nothing. Adjusting the voltage has no effect. Neither does adjusting the current limit. What about spinning the wheel with the sensor on it? Nothing.

Or Do We?

All this is going on while trying to record a video of it, and paying more attention to that, the lead that fell off the bench supply goes unnoticed at first. Not sure what the first clue was, no current draw perhaps? With the power now connected, the faint sound from the speaker of amplified noise together with one of those old style analog bell resonator circuits, right on the edge of ringing, riding on top of the noise can be heard.

Adjusting the volume knob has the expected “crackle”, another remnant from analog days where any DC voltage present on the adjuster arm detects every speck of dust in its path and creates a loud “pop” in the speaker when it finds it. But the real payoff comes from spinning the wheel with the sensor on it. The bell comes to life, then the chuff, chuff as the wheel spins faster.

It does manage to make reasonable bell, chuff, and hiss sounds, but will be replaced once the I2S sound sketch is up and running. The short exposure to that Phoenix 2K2 card spoiled me. It’s less than half the size of this thing, makes much better sound, and can be controlled simply by connecting external reed switches or programmatically via DCC or other means. And even that one’s obsolete!

Does It Run?

Jumped the gun describing the sound system first though. Once the tender’s open, it’s obvious more research is required. Testing out the engine came first. I set it on a short stretch of track and connected the test leads from the bench supply. It does run, if only for a short time before it runs off the end of the track. Reversing the polarity sends it the other direction.

So it does run, but how well is unknown until the first set of run in stands is finished printing and assembled. It takes six for just the three driver axles. Those together with the other ones I already had printed and assembled should be just enough… If the mix matched colors isn’t an issue. That set took all but the last one of the roller skate bearings. Time to restock those and the other hardware.

It probably wouldn’t have taken as long if the assembly steps hadn’t been recorded as well, but at least they’re finished. Once on the run in stand, it’s obvious this has a lot of slop designed in, most likely for tight radius curves. There’s at least a quarter of an inch (~6mm) slop side to side in each of the driver axles. Couple that with the middle axle being driven only by the plastic side rods and it’s a wobbly ride!

Death Wobble?

Don’t know if it’s “death wobble”, but she’s certainly a rockin’ back and forth and side to side! With a slight tug on the cab the wobble is tamed somewhat, but not entirely. While the first and last axles are physically linked together by a shaft to the motor, that middle axle is free to “float” between the side rod links. There are two of them, not one solid single side rod like on the ten wheelers.

One link is connected between the drive pins of the middle and rear drivers. The other connects to the that link and the drive pin of the front driver. The connecting rod from the piston and cylinder shares the middle driver’s pin with one of the side links as well as the arm to the valve rod. The sector arm rocks back and forth around a centered “Johnson bar” with the valve rod action.

That’s the extent of valving action. I’d like to draft up a CNC design to mill out metal side rods and operational valve links with prototypical reverser action. Unfortunately, the Mikado suffers the same valve action limitations with rigid cast plastic in place of the expected moving mechanism. Just now thinking about, it may be possible to borrow valve parts from the ten wheeler replacement mechanisms. Hmmm…

Saving The Best For Last?

More like saving the boring for last. The first installment of this series focused on catching up with where we’re at and why expanding the roster wasn’t a priority. Then it moved on to how most of these historic items are no longer available except for those rare offerings on eBay. The occasional item may pop up in an online dealer’s list of previously owned items, but they’re usually way overpriced.

With that being said, the particulars of the deal were held until the last this time around. This particular acquisition was one of those buy it now or best offer deals on eBay. Most of those available were in the $750 – $1150 “Buy It Now” price range. Not sure what the original price was back when Aristocraft was still in business, but even so, that’s pretty steep.

The offer was half the ask, and the seller countered with an extra $50 tacked on. Combined with tax and shipping it was a little over $500 all told, not quite a hundred dollars more than the Mikado deal, where the tax and shipping together were still less than just the shipping here.

Stupid eBay Tricks

Guess it’s a common “trick” eBay sellers use to avoid having to pay more of a surcharge or lose as much when some buyer tries to rook them, but when I see shipping costs of more than a hundred dollars, it better be hand delivered, straight to my hands, and not tossed around by the postal system until it’s dropped at my doorstep. Literally.

One thing I didn’t cover in the first part was all the offers I got from sellers I hadn’t extended and offer to… Way to scare me off. Folks I’ve never met nor reached out to, already “leaching” out to me. I already think what they’re asking is overpriced to begin with. Those offers only put the price in the ball park of other sellers, before I make any offers. No thanks. I’ll keep looking.

I know what these items are worth to me, regardless of what the sellers think they’re worth. “No lowball offers. I know what I got.” comes to mind. But enough about eBay sellers and tactics. I bought the item I wanted for a price I was willing to pay. Granted, it’s not what I thought I was buying, but it’s a good enough start to know better next time. Who knows? Maybe I’ll design my own CNC version of the mechanism and 3D print the rest.

The Best Part

The best part is all the video material recorded while exploring these “new to us” models. It’s been way too long since we’ve posted any new videos to our YouTube channel. They pretty much stopped when our beloved Brigel crossed the Rainbow Bridge mid 2022. There’s a short of Brigel’s last days with us to mark the anniversary of his passing, but nothing since.

That’s not the only reason, but it definitely took its toll on us. Another source of concern was the aging computer system we use to edit and render the videos. It was a real screamer in its day… A decade ago! Now its age is definitely showing. Nick gave me an older video card he had that was still more powerful than the one I built the system with. That’s helped for a while. But the old girl is tired…

But not retired. That system has roughly 20TB of storage. Some of it SSD, most of it spindle drives. It provides network access to all our collected works, knowledge, and projects. When we lost two of the 2TB drives, meant to be backups of each other, we lost most of our pictures from 2013 and parts of 2014. It was the motivation to pull the trigger on a new machine.

A New Hope

The new system is more than capable of creating videos. There were some hiccups along the way, like when the boot SSD failed, and it could have been bricked for more than two months. And all this just after finally getting everything squared away and ready to go. Seemed like we just couldn’t catch a break. I took the opportunity to rebuild a new boot drive without all the extra fluff included with Windows 11.

Back up and running, all the while waiting on a warranty replacement SSD. At first it was a struggle just to figure out who was on the hook for the warranty. Once that got resolved, things didn’t improve much. Not until I finally convinced someone in support that having a new computer that’s essentially a brick sitting under my desk for the last two months wasn’t the user experience I expected when I bought it.

He sent me a new 2TB boot SSD express! The best part was I got another 2TB replacement SSD a week or so later through the standard warranty channels! So I bought a set of USB drive cases and now have two external 2TB SSD drives for portable storage. The new computer itself was already treated to an upgrade of a second internal drive, a 4TB SSD!

A New Video

With all that being said, it’s time to start putting out the videos again. I managed to collect up all the relevant material in a “starter” project I can “save as” to any new video project, then just remove the content that’s not related. Maybe I should just export all the bins and import just what I need into the new project. Guess I’ll try both ways.

I use DaVinci Resolve for making videos. It’s just the free version, but has plenty of features even so. Microsoft was pushing their latest Clipchamp “freebie”, but it’s barely capable of editing out the unwanted parts just creating a short excerpt video. Guess I’m spoiled. I’m using version DaVinci Resolve 18.6, but they’ve already pushed out the new 19 release.

The short video clips in these new posts were created just for them, saving the full up content for new YouTube postings. All we need now is that “flashy” intro for the channel. Maybe even a trailer to boot. Just need the inspiration…

Much more to come. Stay tuned!

Latest Acquisitions – Part I

September 23, 2024November 19, 2024 barkmannLeave a comment

It’s been nearly a year since we added to our equipment roster, choosing instead to concentrate on infrastructure improvements, organization, and storage. While I’d like to say we’ve been busy doing that, progress has been almost nonexistent. If anything, we’ve taken a few steps backward. The latest setback is preparations for hurricane Helene, hurriedly cramming everything in the garage, and making a shambles of any progress organizing it.

One great feature we added long ago is the storage drawers for the old Bachmann ten wheelers and passenger cars. More recent acquisitions concentrated on diesel equipment, mainly freight oriented, but the USA Trains heavyweight passenger car set upstaged all the Bachmann passenger cars. And while those ten wheelers are well suited to the Bachmann cars, the heavyweights would look out of place behind one.

Most of the other steam engines we have are more suited for logging applications, like the three truck shay and mallet. There’s that 2-6-0 we were going to modify to match the “Orange Blossom Cannonball” that we used to ride from Mount Dora out to Tavares and back, then realized it was the wrong prototype to start with and would require massive modifications. It would be much better to start with something closer, but the original has long since ceased operation anyway.

Limited Choices

Few manufacturers make anything more than “novel” steam engines. LGB is one of the few remaining, but predominantly European designs. USA Trains has one offering, the UP FEF-3 Northern, with a price tag of $4,000. Not for the feint of heart, or pocketbook. Considering the only other offerings are live steam, usually in the $5,000-$7,000 price range for just a little 0-4-0, pretty slim pickings if you’re in the market for a modern steam engine.

Before they went out of business, Aristocraft used to make some decent modern steam engines, like a 2-8-2 Mikado, and a 4-6-2 Pacific. LGB also had a 2-8-2 Mikado offering. No one makes them anymore, which leaves the aftermarket, be it eBay or online dealers. Of all the hobby shops I used to frequent, I can only think of one that may still be in business, and it’s paired with a photography store. Trains on one side, cameras and such on the other.

There was one time way back, when we were shopping after going out to dinner, we thought we found a new one. Walking in we were told they just sold all their inventory to another dealer. I don’t want to call those types of deals “predatory”, so let’s just say the online dealers I’ve seen, brick or mortar front or not, seem to want exorbitant amounts of money for what’s left of those “rare” items.

Caveat Emptor (Buyer Beware)

Don’t get me wrong, I’ve found a few good deals online, but not many. That leaves eBay. My experience with eBay has been mixed. If you’re looking for deals on eBay, you really have to know what it is you’re looking for. You need to “do your homework”, so to speak, and go in with “eyes wide open” as they say. Many of the sellers are established, and most are fair and honest and want your return business.

But even though some sport good overall ratings, they’re shady nonetheless. Back when I was restoring classic motorcycles, I had a seller refuse to refund my money when he had obviously posted a deceptive offering. When I gave him a poor review, he retaliated and said I was the one that was lying about the whole deal and trying to get something for nothing. Live and learn, and NEVER deal with them again!

Sadly, the best deals I’ve found is when the seller doesn’t no what they have, offering the item for much less than it’s worth, or mislabeling it where most others looking for the item wouldn’t think to look at that auction. Long gone are my days of sniping items at the last second. I’m more of a buy it now type these days. I know what I want and what I’m willing to pay for it. These latest deals were one of those “Make an Offer” types.

Shiny and New?

From eBay? Nope. As luck would have it, I got a great deal on an Aristocraft Milwaukee Road Mikado from an online dealer! Listed as “Very Good” and in the box, the price was already lower than anything I’d seen on eBay for similar items. Couple that with a 10% off coupon and it’s a deal. That 10% almost covered the tax and shipping. I think they priced it low because the tender had been modified with some sort of aftermarket electronics added to it.

Talk about a deal! I’d even call it a steal. The only way I knew there was something in the tender from the pictures was the handle of a toggle switch protruding from beneath the floor. I wasn’t sure what to expect, but knew it was some sort of electronics. For less than $450 delivered, I had a “new to me” Mikado. Of course the first thing I had to do was see if it ran. Normally that would be as easy as applying power to the wheels. Not this time though.

I did a quick internet search for the manuals and such. Near as I could tell, the plugs and wires I could see kind of matched the schematics? The front pilot was fitted with an Aristocraft coupler and the “cow catcher” was missing. One of the cast steps from the tender was broken off and missing too. There were other loose parts floating around, like the whistle and rear pilot, but not those parts.

Oh well. For what I paid, I can’t complain, although I might argue with the “Very Good” rating they gave it.

Such a Deal

One of the first things I did was take the shell off the tender to see what electronics lurked inside. Not that I’d know what I was looking at mind you. There’s a built in circuit card, and additional circuit card, a speaker, a small battery pack, a couple of switches, one in the tender floor and one in the tender shell, and a bunch of mix matched wiring, complete with wire nuts. Ugh. Thankfully there’s a connector to the switch in the tender shell.

The additional circuit card uses “modern” surface mount components. It has one large, apparently custom chip, with 40 – 50 pins and a large “sticker” on it. I try Googling the numbers from the sticker and other components but not getting a good match from any of them. I’ve never used the image search feature… Until now. That’s what it takes to get me a valid match. Turns out it’s a Phoenix sound system! Nice!

At least that’s what I thought, until I tried to find more information. It’s a BigSound™ 2K2, short for model year 2002 I’m guessing. But I’m too late to the party. They went out of business more than a year ago. Even though I’m able to find a saved version of their website on the “WayBack Machine” site, looks like none of the PDF or MP3 files were saved. Damn! That means no manuals, no sound files, nothing.

Now What?

I did manage to find the manual and more information on various large scale sites, and one user even brags he recently made a copy of the Phoenix site, but advises to just throw them in the bin. Great. Thanks for the help. Any information gleaned from a site no longer available, that might help support others willing to take the time to keep these things working, would be greatly appreciated.

If you’re reading this and have the sound files, and are willing to share them, please let me know. If you have the programming interface and installation CD, even the schematic, I’m interested in those too. The bottom line is I have one of these sound systems and it still works fine. I’d like to keep it working and not just throw it away because there’s something newer and better.

The good news is IT WORKS! Let me see if I can figure out a way to embed a video player here. I may need to link to one already deployed on the web site itself. It has chuff, dynamo, automatic whistle, cylinder cock steam hiss, and bell on first motion. The chuff must be speed sensitive since it has some sort of magnet/reed switch sensor on one of the tender axles.

Sound Works, But Does It Run?

One of the first things I did after diving into the sound system was to take the engine apart, both to clean it and see if I could just apply power to the circuit board and get it to run that way. I was able to download the manual and parts diagrams for it along with the schematic. It shows a “jumper board” that can be replaced by DCC or other means of remote control. It’s nice that one end has the power connection and the other end the ground.

It has a built in switch to select battery power or track power, but applying power to the pickups on either of the pilot or pony trucks doesn’t work, regardless of the position of the switch. That small battery pack is just to keep the sounds playing when track power is removed. I was hoping it was some sort of battery power arrangement for running the locomotive too, but no such luck. With the shell removed, I have access to the circuit card.

Connecting the adjustable bench supply using a set of test jumpers, I slowly increase the voltage. With the base of the engine laying on its side, the drivers slowly begin to move. IT WORKS TOO! Wahoo! Not sure why the power pickups on the engine aren’t working, but at least I know once it gets power it will move. Would hate to think it relies on just two axles on the tender for power, but a battery power conversion will fix that.

It’s Alive!

I am absolutely thrilled with these results. The next step is to get things working reliably. To that end, I begin disassembling the drive mechanism. This is a strange beast to behold though. Each axle has its own dedicated gear box, all connected together by drive shafts, with the last axle also connected to the motor by drive shaft. I start with the lead axle gearbox, carefully removing the side rods and the the gear box itself.

Or should I say rod? That’s when I find the engineer’s (right) side is missing the link between the first and second axles. Bummer. I can probably design and 3D print something that will fit, but these are all metal side rods, and I’d rather fashion something from metal than plastic. What are the odds of finding that replacement part for a 20 year old engine? Slim to none I would wager. Disappointing, but not a show stopper.

Digging deeper into the first gear box, I realize at least one of the wheels will need to come off to split the gear box halves and expose the innards. The gear box itself is plastic, the halves held together by two screws each on opposite sides. The worm is metal and the drive line components have ball bearings on either end of the worm shaft. The axle also has ball bearings. The weird thing is the wheel and axle is taper fit. Never seen that before.

Replacement Parts

Generally wheels and axles are keyed to each other in some fashion to ensure quartering is maintained between sides. This design relies on the taper fit to wedge the wheels to the axles. The tighter the wheel retaining screw, the tighter the fit to the axle. Again, not a show stopper, but I realize it’s going to take some sort of quartering jig to maintain ALL the wheel positions relative to each another and decide to stop with that first axle.

The ball bearings looks to be single sided metal shielded, and the one at the front of that first axle gear box is pretty rusty and crusty. Its movement feels rough too. Time to replace it, but I don’t have any bearings on hand that will fit. Time to grab the measurements and see what’s available. The nice thing about bearings is they’re standardized and can be identified with just the measurements.

I ordered a pack of 10 for when I finally decide to get in there. I’d do a total refresh of the gear boxes and such, but for now, it will be easy enough to just replace that front bearing without having to tear the rest of the driveline apart. Until I come up with a quartering jig, there’s no way I’m tearing it all apart. The goal is to get it running “good enough”. It would be a good thing to get the track good enough to run on first.

Next steps

As luck would have it, there are just enough spare run in stands to assemble together for the engine to sit on, and in matching black no less! It takes every last one I have that isn’t dedicated to another engine type. I’ll need to 3D print and assemble 8 more for the tender, but considering it can just sit on the rails with no moving parts, there’s no great hurry or need. For now, we’re all set.

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Month: September 2024