EMD F7 in Union Pacific Paintscheme

🏛 Historic Background

The EMD F7 was a 1,500 HP diesel-electric locomotive built between 1949 and 1953 by the Electro-Motive Division of General Motors (EMD) and General Motors Diesel.

Originally designed for freight service, the F7 also became famous in passenger operations on legendary routes such as the Santa Fe.

With this detailed model, you can bring an iconic piece of American railroad history back to life on your own layout.

⚙ Technical Information

This model is designed for O scale (32 mm) track systems and is fully compatible with common Lionel, MTH, and Atlas tracks.

• Battery powered

• Remote controlled via smartphone

• Controlled by an ESP32

• Model length: 33 cm

• All axles are equipped with ball bearings for smooth and quiet operation

⭐ Highlights

• Ball-bearing wheelsets for smooth and silent running

• Two powered wheelsets on the motor bogie – ideal for long trains

• Smartphone remote control via ESP32

• Detailed step-by-step construction manual

• ESP32 control project included

• Complete parts list with references

🔧 Required Non-Printable Parts

Below is a list of components required for assembly that cannot be 3D printed.

The construction manual includes a shopping list with links to the exact parts used.

• M3 machine screws

• M3 self-tapping screws

• 28 mm geared motor

• 8 mm × 3 mm ball bearings

• ESP32 WROOM module

• L298N motor driver board

• Jumper wires

• 3 mm wooden skewers (available at most grocery stores)

• Super glue and all-purpose glue

🚂 Final Notes

I hope you have a lot of fun 3D printing, building, and running this model on your layout!

If you have any questions or need support, feel free to contact me anytime.

Happy printing!