How To Expert Tips Adding 18-foot Bachmann flatcars to the Fleet

Adding 18-foot Bachmann flatcars to the Fleet

By Lou Sassi | February 20, 2025

Once these flatcars arrived on railroad property, the shop crew went to work

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Our On30 Sandy River & Rangeley Lakes Railroad is a bit smaller than its prototype counterpart, running only from Kingfield to Strong, quite a few miles less than the 120 + miles covered by its full-scale counterpart. With this in mind, after seeing some Bachmann On30 18-foot boxcars on the internet, I decided that having a few of them on our railroad would take up less space than Bachmann’s 25-foot versions, thus allowing us more cars to move and spot during operating sessions. After phasing out four of the longer cars I painted and detailed six 18-foot Bachmann boxcars to replace them (two MOW versions are covered in the February ‘24 issue of Model RailroaderEd.). The Railroad’s Superintendent (yours truly) eventually decided a couple 18-foot Bachmann flatcars could also be put to good use. A visit to eBay enabled management to purchase a box of two said flatcars (1). Once they arrived on railroad property, the shop crew went to work.

Two model flatcars
Photo 1. Out of the box Bachmann 18-foot boxcars. Lou Sassi photos

I decided to cover the plastic decking with Midwest Products .0208” by .125” by 11” basswood (No. 8006). Before applying the Basswood planks, I distressed their surface by drawing a razor saw across them (2) then staining them with 2 tablespoons of India Ink dissolved in a pint of 70% denatured alcohol (3).

A hand holding a razor saw against model planking
Photo 2. Lou distressed the planking by “pulling” a razor saw across its surface.
A hand holds a paint brush against model decking
Photo 3. The decking boards were stained with an India ink-alcohol mix.

This gives the wood a grey weathered look. (I distress and stain both sides of the stripwood. This keeps the strips from warping as much as they would if only one side was distressed and stained.)

To eliminate seeing the end of the plastic deck planks under the wood planks on top of them, I removed the overhanging edges of the plastic planks and filed them flush with the car sides using a No. 11 hobby knife (4) and a flat needle file (5).

An exacto knife held against the side of a model freight car
Photo 4. Decking extensions were carved off with a No. 11 hobby knife.
A file is held to the side of a model freight car
Photo 5. Excess cast-on planking was filed off.

I also sanded down the top of the plastic decking, until there was just a hint of the voids between planks, by sliding the body of the car over No. 60 grit sandpaper (6).

The deck of a model freight car is rubbed against a sheet of sandpaper laying flat on a table
Photo 6. The top of the cast-on deck planks was sanded using No. 60 grit sandpaper.

This also removes the bottom of the cast on the brake wheel assembly. Since I now needed a new brake wheel base, I removed two brake wheel assemblies from a couple 25-foot Bachmann flatcars I had lying around. Unlike the “cast-on” lower brake mechanism on the 18-foot cars, the castings on the 25-foot-long flats are entirely separate.

After drilling two holes in each end of both cars with a No. 75 bit and adding coupler lift bars using 24″ wire and Taurus Products small eye bolts (kit No. 111), I turned to the challenge of adding weight to the cars. When dealing with a closed car it is quite easy to add auto wheel weights to the inside of the body as I did on the box cars. Adding weight is a bit more challenging when it comes to flat cars, especially those with light loads or no loads at all. Since I wanted the cars to be close to 4 ounces and out of the box the flats are around 2 ounces, I added two 1/4” x 5/8” x .078″ flat washers to the underbody at each truck mounting point (7).

Washers are glued to the underframe of a model freight car
Photo 7. Washers were then glued onto the underframe.

Although I didn’t reach my 4-ounce goal, the washers did manage to increase the car’s weight by about another 1/2 ounce.

After applying a dab of Weldbond glue to the brake assemblies and truck frames on the opposite side (8), I trimmed away the mounting tabs for the brake assemblies on the top of the truck frames to clear the washers attached to the underframe of the car (9).

Glue is applied to truck frames
Photo 8. Then the brakes were glued to the truck frames.
An exacto knife is held to the trucks of a model freight car
Photo 9. Finally the brake lugs were cut off each side of the trucks.

With the cars dismantled, I washed everything in warm soapy water (10).

A disassembled model freight car
Photo 10. The car was dismantled and washed.

Once dry, I painted the bodies and underframes with aerosol grey primer (11).

The underframe of a model freight car is spraypainted
Photo 11. Lou sprayed the underframe and body with a light flat gray primer.

I sprayed the car body sides with Glosscote prior to applying decals (12).

A pair of tweezers holds a model freight car body while a gloss coat is applied to it
Photo 12. The sides of the car were then sprayed with Glosscote.

After allowing the Glosscote to dry overnight, I moistened the surface of the car with Microscale Industries Micro Set and, after dipping the decals individually into a cup of tap water for a moment, applied them to the car side using small tweezers (13).

Decals are applied to the side of a model freight car
Photo 13. Decals were applied to the sides of the car using small tweezers.

I then moved the decals into position with a round toothpick (14).

A toothpick is held to the side of a model freight car to adjust the position of a recently-applied decal
Photo 14. Slide the decals into position with round toothpick.

Once in place, I repeatedly wet them with Micro Sol. This dissolves the decal film from around the letters. As the Micro Sol dried, I pricked any air bubbles with a new No. 11 hobby blade (15) followed by more Micro Sol.

An exacto blade is held to the side of a model freight car to pop bubbles in a recently-applied decal
Photo 15. Bubbles in the decal were poked with a fresh No. 11 hobby blade.

When I was satisfied that the decals had adhered to the surface and there were no air bubbles or voids to contend with, I sprayed the car with Krylon Matte Finish No. 1311 (16).

A can of matte finish is applied to a model freight car
Photo 16. The sides were sprayed with Krylon Matte Finish.

I have been using a new technique for weathering the railroad’s freight equipment that I picked up on YouTube. After applying a wash of India ink/alcohol to the underframe (17) l gave the car body a brushed-on wash of Model Master Engine Black thinned with tap water.

Ink wash is applied to the underframe of a model freight car using a paint brush
Photo 17. Apply the India Ink wash to the underframe.

The wash ends up being about 1 part paint to 2 parts water. It’s not an exact mixture. I simply dip a soft bristle brush in full strength paint, then dip it into the water before finally applying it in downward strokes to the surface of the car (18).

Water wash is applied to a model freight car with a paint brush
Photo 18. Apply the Engine Black/water wash to car body.

If it’s too dark I dip the brush just in water and brush over the previously applied mix. If it’s too light I do the opposite, dipping the brush in full strength paint and brushing it on. Once the mix dries, I remove the majority of it by wiping it off, again in a vertical or downward motion, with a flannel cloth dipped in 91% rubbing alcohol (19).

A cloth is held to the side of a model freight car
Photo 19. Excess wash is wiped off with a flannel cloth dipped in alcohol.

After painting two washers for the trucks flat black, I glued them to the underside of the truck frames. Then, with the wheel sets removed, the bolster/sideframe assemblies were sprayed with Krylon Matte Finish No. 1311 (20).

A can of matte finish is held to two model freight car trucks
Photo 20. Then the trucks were sprayed with with clear matte finish.

The Bachmann plastic couplers were replaced with Kadee No. 27s that had their glad hands nipped off, as I don’t use magnetic uncouplers. After a wash in warm soapy water, they were spray painted with Valspar Flat Labrador Brown (No. 85406), (21) as were the wheelsets once the tire treads were masked with blue painter’s tape (22).

Model freight car couplers are spraypainted
Photo 21. The couplers were sprayed Labrador Brown.
A can of spray paint is held next to model freight car wheel sets
Photo 22. Wheelsets were sprayed with the same color.

With the car body, underframe, and wheel assemblies painted, it was time to re-assemble the car, add the wood decking, and finish the weathering. After cutting the decking to length on a NorthWest Short Line Chopper (23), I applied the decking board by board, gluing each in place with WeldBond (24).

A chopper is used to cut model deck planks
Photo 23. Deck planks were cut to length with a NWSL Chopper.
A brush applies a white paste to the deck of a model freight car
Photo 24. Weld Bond was used to glue planking to the deck.

Using the remaining brake assembly details on the side of one end of the car as a reference, I drilled a No. 72 hole in the cast on mount at the end of the decking and attached the brake assembly.

I wanted the decking to have a weathered, well-worn look, so I scraped black pigment sticks into powders with a grater. I placed some pigments along with a few drops of rubbing alcohol into two separate indentations in an artist palette. After dipping a semi-stiff bristle brush into the alcohol and removing a bit of it on a soft towel, I dipped the brush into the pigments. This results in a semi-dry-brush application which is quite controllable. Once dry, I wiped the surface of the deck with a soft flannel cloth dipped in alcohol (25).

A cloth is held to the top of a model freight car
Photo 25. Excess pigments were wiped away with a flannel cloth dipped in alcohol.

As with the decking, I weathered the truck sideframes with the artists dry pigments, although this time I added red to the mix. I dry brushed the two colors onto the sideframes (26) until satisfied.

A brush is held to the trucks of a model freight car
Photo 26. The moist powder pigments/water blend was applied to the sideframes.

I also added rust to the metal parts of the car using the same technique, dipping a small brush into rubbing alcohol, then the red rust colored pigments, and carefully applying them to the metal parts (27).

A brush is held to the side of a model freight car
Photo 27. The same blend was then applied to the metal parts.

The final step was to add Hi-Tech Details No. 22 O scale air hoses (No. 7501) and attach them at a 60-degree angle to each end of the car. I use cardboard jigs that hold the hoses in position while I attach them. I then applied Aleen’s tacky glue to the underframe and pressed the hoses in place (28).

A toothpick is inserted into glue on a piece of cardboard next to a model freight car
Photo 28. The air hoses were glued to each end of the underframe.

With the cars done, it was time to tackle the load one was to carry. In this case, I decided on a 1928 Ford (Fordson) tractor I purchased from Narrow Gauge Model Company (item No. NGM-V508) that I found in my parts box (29).

A gray model tractor
Photo 29. The stock Fordson tractor.

Since U.S. versions of the tractor I found images of on the internet were usually a sky blue color with red wheels and the model was entirely gray, it needed repainting. I began by painting the motor and transmission Model Master Engine Black. After mixing a batch of Fordson Blue paint from approximately 60% Model Master Reefer White to 40% Cobalt Blue, I painted the body, fenders, suspension, and seat the light blue mix (30).

A pair of hands holds a model tractor and a paintbrush, applying blue paint to the tractor
Photo 30. The tractor was painted Fordson Blue.

I finished with a coat of Model Master Oxide Red on the wheels (31) and earth on the steering wheel.

A pair of hands hold a paint brush and a model tractor, painting the wheels of the model tractor red
Photo 31: The tractor wheels were painted Oxide Red.

I drybrushed the body and wheels with Model Master Old Silver and the engine with grimy black using a small stiff bristle brush with most of the paint removed on an old newspaper before application (32).

A pair of hands hold a model tractor and a paintbrush, applying a paint finish to the tractor
Photo 32. Steel was drybrushed onto the body and wheels to highlight edges.

I also lightly brushed on some dry black powdered pigments to tone down all the colors.

I mounted the tractor using a combination of Kappler scale 6” x 6” beams and chains. After pre-drilling No. 68 holes (33), I pressed two Tichy Train Group No. 8034 NBW castings into each beam.

A small metal awl is held in one hand, being pressed into a model plank
Photo 33. Holes were drilled in the planks for the NBW castings.

The beams were Weld Bonded to the car deck (34), the tractor placed into position, and two lengths of A-Line chain (No. 29220) passed through both the front and rear axles of the tractor and slipped through post brackets on each side of the car (35).

A pair of hands manipulate a blue and red model tractor on a model flatcar
Photo 34. The planks were glued to the deck.
A hand attaches a chain to a model tractor and model flatcar
Photo 35. The chain was attached by passing wire through end links.

Rather than gluing the chains in place, I passed a short length of Woodland Scenics foam cutter wire (No. ST1436) through the first link on one end of each chain, then after running the chain through the pole brackets, slid a length of foam cutter wire through the opposite end link. I trimmed off the excess wire and chain with small cutter pliers and applied a dab of Weld Bond on each end link to hold everything in place.

Once the tractor was secured to the deck, car No. 323 was added to the consist leaving Strong for Kingfield, while car No. 371 was spotted in the yard to await future assignment. 

Engine #24 heads out of Strong with flat # 323 in the consist on its way to Kingfield.

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