Articles Pre-2025

A Strange Boxcab

Or What Happened When I Got My Hands on an Atlas SW8


by Jack Hess
Atlas SW8 as it was on ebay
Here is the SW8 as it was on ebay. Photo is by Justin.
SW8 chassis with only trucks and chassis
The body, motor, electronics and cab weight have been removed.

1. Building the New Body

body rough in made from two MTH bay window cabooses
I cut an MTH bay window caboose body by sectioning out the bay window location and inserting a piece of another MTH bay window caboose body.
three body pieces paint stripped and glued together
The three sections spent 24 hours in IPA and then I scrubbed the paint off and rinsed them with dish soap and hot water. I built a base to hold the pieces in alignment while I glued them together.
making the roof gribble base
The bottom of an Atlas three bay hopper car was chopped and the two outer bays glued together. The flanges and airlines were filed off and the entire assembly filed flat on the edges. I have marked the cut out area on the roof.
roof greeble number 1
roof greeble number 2
Here is the roof with full greeble.
rough in of the project
A peek at what the loco looks like before the motor and the wiring are added.
end window installed
The end window and handrails installed.
weight epoxied to inside roof
The end weight was epoxied to the inside of the roof. A thick piece of styrene has been added to mount the body to the chassis.
heatsink epoxied to body mount
On the other end of the body, the heatsink is mounted to the thick styrene body mount piece.
the body in primer
The body in primer. Roof details removed and side doors added.

2. Rebuilding the Chassis

coupler holder
The underside showing the Kadee coupler mounting. A styrene coupler holder fits over the stock Atlas coupler mounting holes, and a 2-56 screw goes through the Kadee pocket and into the most outward coupler mounting hole. The Kadee cannot pivot as it sets in the coupler holder.
completed pilot
The pilot with the space between the steps filled in and the Kadee couler installed.
stripes added to completed pilot
The pilot is finished and Kadee couler knuckle installed. Painted gloss black and then sprayed with Testors Dullcote. The white stripes are Microscale 1/8" White Stripes. Pilot still needs details such as lift bars, end railings and side railings.
rebuilt 3rd rail pickup
The new third rail pickup mount was made from a 2-56 screw and a nylon insert nut. The stock arrangement broke when I tried to remove it. The screw was cut off once everything was in place.
air tanks removed
Here is the center of the chassis with the air tanks removed and the cast in mounting lug ground off.
chassis reassembled
The powers trucks were taken apart, cleaned and regreased. The motor reinstalled. An electrical distribution board was made from thick styrene and two brass strips, glued to the styrene. Holes were drilled and tapped for 2-56 screws,to which the motor and truck wires attach. The new board mounts into the holes to which the stock circuit board was mounted.
new electrical board installed
The truck wires and the motor wires attached to the board. One ground wire was made and attached to each truck. There are two extra screws in the event lighting becomes a priority. Wires are wrapped with a strip of Velcro so they will stay in place. Chassis was tested and ran great (I run
3 rail with DC power).

3. Painting

body painted and decaled
The body has been painted and the decals applied.

4. Completed Model

side view of completed model
Side view. The detail replacing the air cylinders between the trucks was made from a G scale old time air cylinder, an HO air conditioner, and HO brake components.

end view
The end railing is from a Lionel RS-3. The headlight is a brass casting.

top view
The top.

Articles Pre-2025

copyright   ©  2017 Jack Hess