F7 Diesel Locomotives

Model Manufacturer Info

Manufacturer:

Enhorning Industries

Prototype Info

Category:

F7

Year/Era:

1949

Manufacturer:

Electro-Motive Division (EMD)

Dimensions:

50'8"

Ext. Reference:

visit site

Ext. Reference:

visit site

Ext. Reference:

visit site

Model Info

Gauge:

S

Introduced:

1951

Product Type:

Plastic

Finish:

unpainted

Power:

AC, DC, or non-powered

Wheels:

scale or hi-rail

Online Article:

visit site

Supplemental Part:

Exhaust Stack

Notes:

Note that this body shell is identical between each of the F-series models the company released. In actuality, the models were Phase IV F3 engines. Most of the models had a hump in the center. This was due to the shell being pulled from the die before it was fully cured. Another quirk about these models is that they have EMD E8-style numberboards; correct replacement boards were available later.

This model has the original planetary drive system.

A clear view of the original planetary drive system. Some models have it mounted at an angle and some have it straight.

This model has the Robert L Miller Laboratory trucks installed in it (see the next photo).

Enhorning model with Robert L Miller Laboratory trucks installed.

Scanned by Rich Gajnak from the November 1953 Model Railroader magazine ad.

From the October 1951 Model Railroader magazine ad.

Model Manufacturer Info

Manufacturer:

Omnicon Scale Models

Prototype Info

Category:

F7

Year/Era:

1949

Manufacturer:

Electro-Motive Division (EMD)

Dimensions:

50'8"

Ext. Reference:

visit site

Ext. Reference:

visit site

Ext. Reference:

visit site

Model Info

Gauge:

S

Introduced:

1988

Product Type:

Plastic/Metal Kit

Finish:

unpainted

Power:

DC

Wheels:

scale

Couplers:

scale

Magazine Article:

S/Sn3 Modeling Guide, Dec 1997

Supplemental Part:

Exhaust Stack

Notes:

The kit consisted of a one-piece urethane body casting, sprung unassembled brass trucks manufactured by SouthWind Models, a NorthWest ShortLine drive system, a Sagami motor, a formed and pre-drill metal floor, SouthWind Models brass detailing parts, a brass wire, and an instruction booklet. The body shell was actually produced by Wabash Valley, which, itself, was a re-worked Enhorning shell. The gearing was set to match the American Models' FP7 engines of the time, so that these could run in a consist. The super-detailing kit (part #1007S) was also available separately. These models could be used for building a late-F3 model or an early F7 one, with some extra effort by the modeler.

The photo is from the Omnicon promotional flyer.

Model Manufacturer Info

Manufacturer:

Overland Models

Manufacturer ID:

1750

Factory:

Ajin Precision, Korea

Prototype Info

Category:

F7

Year/Era:

1949

Manufacturer:

Electro-Motive Division (EMD)

Dimensions:

50'8"

Ext. Reference:

visit site

Ext. Reference:

visit site

Ext. Reference:

visit site

Model Info

Gauge:

S

Introduced:

1987

Product Type:

Brass

Finish:

unpainted

Power:

DC

Wheels:

scale

Supplemental Part:

Exhaust Stack

The model is shown as it arrived from the factory.

Model Manufacturer Info

Manufacturer:

RamBros Workshop (click for web site)

Prototype Info

Category:

F7

Manufacturer:

Electro-Motive Division (EMD)

Model Info

Gauge:

S

Introduced:

2023

Product Type:

3D-print File

Online Article:

Overview of the System

Supplemental Part:

Louvers

Supplemental Part:

Exhaust Stack

Supplemental Part:

3mm LED Headlamp Holder

Notes:

This company is the originator 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.

Model Manufacturer Info

Manufacturer:

S-Helper Service

Manufacturer ID:

00869 (DC)

Additional IDs:

00809 (AC, sound), 00839 (DCC sound)

Prototype Info

Category:

F7

Year/Era:

1949

Manufacturer:

Electro-Motive Division (EMD)

Dimensions:

50'8"

Ext. Reference:

visit site

Ext. Reference:

visit site

Ext. Reference:

visit site

Model Info

Gauge:

S

Introduced:

2002

Product Type:

Plastic

Finish:

painted, not lettered

Power:

AC, DC, or DCC, with or without sound

Wheels:

scale and hi-rail

Couplers:

AF & scale

Supplemental:

Supplemental Information

Supplemental Part:

Exhaust Stack

Notes:

A-unit, available in three different configurations.

Model Manufacturer Info

Manufacturer:

Wabash Valley Lines, Inc.

Manufacturer ID:

772.2-64-100

Prototype Info

Category:

F7

Year/Era:

1949

Manufacturer:

Electro-Motive Division (EMD)

Dimensions:

50'8"

Ext. Reference:

visit site

Ext. Reference:

visit site

Ext. Reference:

visit site

Model Info

Gauge:

S

Introduced:

1985

Product Type:

Resin

Finish:

unpainted

Power:

No Chassis

Supplemental Part:

Exhaust Stack

Notes:

The Wabash Valley shells are an improved version of the Enhorning F-unit casts (the Enhorning ones had a deformation on their roof top and a crease on the side). Compared to prototype photos, the Wabash Valley Models shells represent F3 phase IV (9/1948 to 2/1949) EMD bodies. The shell has the slight "V"-shape above the rear end flat door panel, which is consistent with F3 body ends, but there is no roof overhang. The shell has the two rectangular roof vents for the dynamic brakes which are an F3 phase IV feature. Some shell modifications would need to be made by the modeler to represent a true F7. Originally, the recommendation was to use an American Models FP7 chassis to power these models. However, the American Models GP9 (which was not available back then) is a much better fit and will only require some corner trimming of the GP9's metal base. Also, the trucks line up better with the shell. Additional details, such as simulated glass and couplers will need to be added by the modeler for a complete model.

Bill's model has undergone some improvements by replacing the affected portions of the shell with brass detailing parts.

Mark Mugnai has shells that have four or six chassis mounting posts. Mark found that the original Enhorning shells had the center posts, but that they have to be removed to be able to mount a chassis into the shell.