Wednesday, January 31, 2018

Make a locomotive fuel tank out of bondo

Make a locomotive fuel tank out of bondo

Sometimes you need a larger fuel tank, or in the case of the Athearn C44-9W I got for parts, there was no fuel tank at all so I had to build it from scratch.

Bondo is a product that is easier to use than you would expect.  Take a piece of card board from an old box and put some of the gray bondo in a glob with a plastic knife.  Then put about a cap full of the red hardener next to it and mix the 2 together.  It will turn pink.

You now have 3-5 minutes to glob it where you need it.  I use tape barriers most of the time, but be warned that too much barrier and you can't get the bondo to go where you want it.

As soon as it starts to get a bit sandy looking when you mix it up on you card board that means time is up for spreading it.

Now you have 5-10 minutes where you can take a flat blade x-acto knife and trim it.  You sculpt it as best you can carefully shaving it down.

At about 30 minutes in you can go to the disc sander and shape it like wood.  Sometimes you wait a bit longer, but rarely do you need to wait an hour.

You can get it very smooth if you want using finer and finer grades of sand paper.  Once you're done, you can paint it.  I don't always use primer, but primer can be used to make the surface even smoother.

How to clean HO Scale Wheels

How to clean HO Scale Wheels on Model Trains

There are a lot of methods to do this.  My experience shows that using metal polish is the best way whenever possible.

For brass, use Brasso, Simi-Chrome or Flitz.

For all others, you can use those three and Noxon is also very good.  I don't use Noxon for brass because I have Brasso, but it will work on brass.

The results are excellent.

I put the polish in a glob on a heavy duty micro fiber cleaning rag and just rub the wheels until clean, works really fast.  After that I use a tooth brush, dish soap and COLD water.

It is totally possible to put wheels in the drill press and do this, but you need to know how to get them back into gauge after you do that using the Tacky glue method I showed in the SDP40 rebuild video.  Once wheels are removed from their axles they tend to go out of gauge quite often.

There is another way to use the metal polish and that is to put it on the cloth wheel of a flex shaft moto-tool that has a slow speed and then put it in a bench vise.  This works very well on wheels that don't come off their axles - this is a future video.

Athearn C44-9W Northwest Short Line Motor Installation

Athearn C44-9W Northwest Short Line Motor Installation

The C44-9W project continues.... I understand why I got this locomotive for very cheap.  This project was abandoned due to a lot of technical problems.  The previous owner almost got it to work, but several faults cropped up making this a very frustrating project.

The drive couplings all have at least 1 pin sheared off.  This was a likely attempt to get smoother operating characteristics that ultimately lead to the couplings coming apart frequently.

I've change the position of the couplings and used a drop of super glue to hold them.  Most people aren't comfortable doing that in case there is a screw up, but if you use a tiny screwdriver and hit just one side of the shaft, you can remove it later if you need to.

I use Goop to hold the motor in place.  It does a very good job at cutting vibrations and can be removed if I make a mistake.

Tuesday, January 30, 2018

Athearn C44-9W Rebuild with NorthWest Shortline Can Motor

Athearn C44-9W Rebuild with NorthWest Shortline Can Motor

NWSL Wheelsets also

This next restoration is an Athearn C44-9W that I got "for parts or repair."

It has a NorthWest Shortline 163-4 Can motor and some NWSL replacement wheels.  It wasn't a successful conversion and the person who had gave up and stripped some usable parts and then sold it to me.

Confidence is high that we can rebuild it.

This is part 1 where we break down the trucks and get everything apart.

Saturday, January 27, 2018

Bachmann Pancake Motor Repair Sideframe Removal

Bachmann Pancake Motor Repair Sideframe Removal

How to get the wheels out

Bachmann locomotives equipped with the pancake motor have 1 piece sideframes.  There are a couple different versions, but they all come off the truck the same way.

The sideframes are held in place by wedge shaped ends on each truck.  The sideframe has a cutout on the end where the wedges fit when the sideframes are on.

To remove the sideframes, carefully take your flat blade screwdriver to the end closest to the fuel tank, also known as the rear end or the back end of the sideframe.  Come in sideways as much as you can and give a twist with the blade and it should pop free.

DO NOT put the the flat blade in from the top and pry like you would a lever or you will break it.  If you do break it, once it is off use super glue to repair it.  NO OTHER GLUE will work.  For extremely broken parts, especially if you are replacing the broken part with something you fabricated, then use 2 part epoxy, that is the only thing strong enough to hold a new part in place.

I use PC11 epoxy, its expensive, but for model making, it will last many years and you don't end up wasting it like the kind that uses a plunger to dispense the 2 parts.  For about half price, there is a PC7 which is also supposed to be very good, but I don't have that one yet.  As soon as I do I'll review it here.

This shows the rear clip released
 Sideframe completely removed
 How it lines up coming off or going on
 Putting it back on or taking it off

They do have a proper direction, if you have a paint marker, put a dot on the rear end of each sideframe so you don't have to figure it out later.

Also, take a picture before you remove it, you'll notice on the U36 and BQ23-7 that those models have very easy to identify truck features that will help you get it back together again.

On the older models, those trucks are difficult to tell which way they go back, so mark them.  If you forget to do this and already have them off, then you need to carefully match the slots on the ends to the wedges that hold them in place, don't worry it's not hard.

Thursday, January 18, 2018

Athearn SDP40 rebuild and repair

Athearn SDP40 total rebuild

I forgot to post my rebuild and floating axle video of the Athearn SDP40 blue box.

This is total rebuild with floating axle, DCC ready and excellent wiring.

Athearn SD40T-2 total rebuild

Athearn SD40T-2 total rebuild

rebuild, rewire and pimp my drive system

The Athearn SD40T-2 that I got in 1988 was a locomotive that I wanted sooo bad.  I got a snoot nose specially ordered for from the hobby shop.  Those were the days when I made everything Chicago & NorthWestern.

I hand painted this thing and bent grab irons with a pliers from piano wire.  I did hard wire it back then and coated the exposed metal with the graphite coating called Slip Plate.

The problem with this locomotive is that it's big with a long wheel base.  It's notorious for jumping the track on multiple turn outs.

So I was wondering what project to do next when a friend asked if I could do an SD40T-2.  I've got several of them and my first thought was to do this rust bucket I got for a couple bucks at the train show.  Then I saw my old set of tunnel motors, 1 a snoot the other a regular hood.

When CNW ceased to exist I was in shock and boxed up all my trains where they stayed for 20 years, almost exactly 20 years.  I setup a new workshop and promised myself that I would destroy or strip my 72 CNW locomotives, but preserve them.  I'm amazed at how detailed these locomotives were. Considering that I had all hand tools and not nearly what I have now, these locomotives look good.  They aren't great by today's standard, but they're certainly operating quality.

I spotted my tunnel motors in my lineup of old stuff and decided they needed this rebuild.  I remember dreaming about getting this locomotive.  I went ahead and did an in depth rebuild.

One of the most important modifications I made was the floating axle.  If you're familiar with Athearn locomotives, especially the SDP40 and SD45, then you probably know they tend to derail in yards a lot.  The tunnel motors don't just derail they also throw cars off the track.  The solution is to make the floating axle.

This rebuild was a total success and the floating axle negotiates multiple #4 turnout with ease now.

This is part 1 of the rebuild