GP7 Diesel Locomotives

American Hi-Rail

GP7

1949

Electro-Motive Division (EMD)

55'11"

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S

1993

Resin Kit

unpainted

No Chassis

Torpedo Tubes Air Tanks Winterization Hatch

Louvers

Exhaust Stack

Replacement Fuel Tank

Cascade Hobby Products

GP7

1949

Electro-Motive Division (EMD)

55'11"

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S

Conversion Kit

unpainted

DC

scale or hi-rail

AF or scale

view

Torpedo Tubes Air Tanks Winterization Hatch

Louvers

Replacement Fuel Tank

Exhaust Stack

Port Able Lines

GP7

1949

Electro-Motive Division (EMD)

55'11"

visit site

visit site

S

Conversion Kit

unpainted

DC

scale

Torpedo Tubes Air Tanks Winterization Hatch

Louvers

Replacement Fuel Tank

Exhaust Stack

The history of this kit is a bit complex. The kit was originally released by company founder Jack Amerine, but he sold the company to Jon Beveridge in around 1970. Jon renamed the company Cascade Hobby Products, and continued to sell these kits, but with improvements. The kit came with one powered truck, which you can see in the fourth photo. Dick Karnes has stated that the body of the kit was a Ken Kidder product/design, but the basic concept was to convert an A.C. Gilbert A.F. GP7 to scale. Jon Beveridge added pilots with steps, replacement stanchions to improve the frame assembly, and hood fan housings to the kit.

RamBros Workshop (click for web site)

GP7

1985

Electro-Motive Division (EMD)

59'9"

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S

2023

3D-print File

scale

Overview of the System

The nullroute Source Files for Norfolk Southern Version

Torpedo Tubes Air Tanks Winterization Hatch

Louvers

This company are the originators of this "open source" locomotive design. Since it is open source, you will find others whom have enhanced the design, and yet others who make the actual 3D-printed models available for sale. This company only makes the 3D-printer files available.

Sunset Models, Inc.

Kumata Models (KMT), Japan

GP7

1949

Electro-Motive Division (EMD)

55'11"

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S

1984

Brass Kit

unpainted

DC

scale

3/16 "S"cale Railroading, Oct 1991 (cover)

Torpedo Tubes Air Tanks Winterization Hatch

Louvers

Replacement Fuel Tank

Exhaust Stack

This is the freight version. Uses rubber belt drive system (these can be replaced with McMaster-Carr part #1679k164). The shell is made up of several pieces. The frame, platform, and hand rails are one piece. The cab and the hoods each are separate pieces. There are two flat "can" Canon motors inside the hood, one at each end. This was one of the last models manufactured in Japan (before brass manufacturing moved to Korea). These engines were originally gauged for the older NMRA S-scale standard.

Sunset Models, Inc.

Kumata Models (KMT), Japan

GP7

1949

Electro-Motive Division (EMD)

55'11"

visit site

visit site

S

1984

Brass Kit

unpainted

DC

scale

visit site

Torpedo Tubes Air Tanks Winterization Hatch

Louvers

Replacement Fuel Tank

Exhaust Stack

This is the passenger version (additional tanks mounted on the roof). Uses rubber belt drive system (these can be replaced with McMaster-Carr part #1679k164). These engines were originally gauged for the older NMRA S-scale standard.

Truly DIY

GP7

1949

Electro-Motive Division (EMD)

55'11"

visit site

visit site

S

2023

3D-printed Plastic Kit

printed in color

Battery

scale

Torpedo Tubes Air Tanks Winterization Hatch

Louvers

Replacement Fuel Tank

Exhaust Stack

This engine is designed to be used with the RamBros Workshop's 3D-printed track system, and include their automatic coupler. Contact the company if you want the body printed in a different color. The motors are in the truck, so the entire interior is available.