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EMD E7: Measurement & Products

The E7 is a 2,000-horsepower (1,500 kW), A1A-A1A passenger train locomotive built by General Motors' Electro-Motive Division of La Grange, Illinois. 428 cab versions, or E7As, were built from February 1945 to April 1949; 82 booster E7Bs were built from March 1945 to July 1948. (Circa 1953 one more E7A was built by the Los Angeles General Shops of the…

Language: English [EN]
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EMD E7 topic overview

The analysis highlights Measurement and Products as prominent areas in the source structure around EMD E7.

Related topics
30
Source areas
4
Connected nodes
34
Extracted relationships
32
Concept neighborhoods
17
Bridge connections
34

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Overview · 13 topics
In film · 11 topics
Original owners · 4 topics
Surviving example · 2 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Aspiration
Mechanical via Roots blower
Build date
February 1945 – April 1949
Builder
General Motors Electro-Motive Division (EMD)
Career
CareerLocaleUnited StatesDispositionOne preserved on static display, remainder scrapped.
Configuration:
​
Cylinders
(2) 12

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

In film

Surviving example

Original owners

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How EMD E7 connects Entity context

The extracted context around EMD E7 shows recurring relationship patterns in the source. For example, EMD E7 → Mechanical via Roots blower Another extracted example is EMD E7 → February 1945 – April 1949. Use these groups to spot repeated connection types before inspecting the individual relationships.

EMD E7

Top relations

Aspiration · 1
EMD E7 → Mechanical via Roots blower
Build date · 1
EMD E7 → February 1945 – April 1949
Builder · 1
EMD E7 → General Motors Electro-Motive Division (EMD)
Career · 1
EMD E7 → CareerLocaleUnited StatesDispositionOne preserved on static display, remainder scrapped.
Configuration: · 1
EMD E7 → ​
Cylinders · 1
EMD E7 → (2) 12
Displacement · 1
EMD E7 → 6,804 cu in (111.50 L) each
Disposition · 1
EMD E7 → One preserved on static display, remainder scrapped.
Engine type · 1
EMD E7 → V12 Two-stroke diesel
Fuel type · 1
EMD E7 → Diesel

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

isbn railroad units e7a e7 locomotives diesel emd publishing built pennsylvania model passenger power display general one wisconsin solomon brian

EMD E7 relationships Subject–Predicate–Object triples

TTTA extracted 32 structured relationships around EMD E7. Examples in this analysis include EMD E7 → Aspiration → Mechanical via Roots blower and EMD E7 → Build date → February 1945 – April 1949. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
EMD E7AspirationMechanical via Roots blower1.00infobox
EMD E7Build dateFebruary 1945 – April 19491.00infobox
EMD E7BuilderGeneral Motors Electro-Motive Division (EMD)1.00infobox
EMD E7CareerCareerLocaleUnited StatesDispositionOne preserved on static display, remainder scrapped.1.00infobox
EMD E7Configuration:​1.00infobox
EMD E7Cylinders(2) 121.00infobox
EMD E7Displacement6,804 cu in (111.50 L) each1.00infobox
EMD E7DispositionOne preserved on static display, remainder scrapped.1.00infobox
EMD E7Engine typeV12 Two-stroke diesel1.00infobox
EMD E7Fuel typeDiesel1.00infobox
EMD E7Gauge.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .de…1.00infobox
EMD E7Generator(2) EMD D-41.00infobox
EMD E7Height14 ft 11 in (4.55 m)1.00infobox
EMD E7Length71 ft (22 m)1.00infobox
EMD E7LocaleUnited States1.00infobox
EMD E7Loco weightA unit: 315,000 lb (143,000 kg), B unit: 290,000 lb (130,000 kg)1.00infobox
EMD E7Maximum speed85–117 mph (137–188 km/h)1.00infobox
EMD E7Minimum curve21° (274.37 ft or 83.63 m radius)1.00infobox
EMD E7ModelE71.00infobox
EMD E7Performance figuresPerformance figuresMaximum speed85–117 mph (137–188 km/h)Power output2,000 hp (1,491 kW) totalTractive effort56,500 lbf (251,000 N) starting, 31,000 lbf (140,000 N) continuous1.00infobox
EMD E7Power output2,000 hp (1,491 kW) total1.00infobox
EMD E7Power typeDiesel-electric1.00infobox
EMD E7Prime mover(2) EMD 12-567A1.00infobox
EMD E7RPM range8001.00infobox
EMD E7SpecificationsSpecificationsConfiguration: ​ • AARA1A-A1AGauge.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;…1.00infobox
EMD E7Total produced428 A units, 82 B units1.00infobox
EMD E7Traction motors(4) GM D7 or D17 or D271.00infobox
EMD E7Tractive effort56,500 lbf (251,000 N) starting, 31,000 lbf (140,000 N) continuous1.00infobox
EMD E7Type and originType and originPower typeDiesel-electricBuilderGeneral Motors Electro-Motive Division (EMD)ModelE7Build dateFebruary 1945 – April 1949Total produced428 A units, 82 B units1.00infobox
EMD E7Wheel diameter36 in (914 mm)1.00infobox

Related concept clusters Concept neighborhoods

The concept neighborhoods around EMD E7 bring nearby vocabulary together. In this analysis, examples include A1a-a1a, Emd and Electro-motive. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • EMD E7
    • A1a-a1a
    • Emd
    • Electro-motive
    • Passenger
    • Model
    • E7a
    • Locomotives
    • Units
    • Earlier
    • Hp
    • Kw
    • Nose
  • emd e7
    • Passenger
    • A1a-a1a
    • Emd
    • Kw
    • Electro-motive
    • General
    • Preserved
    • Model
    • E7a
    • Locomotives
    • Units
    • Earlier
  • general motors
    • Hp
    • Kw
    • Electro-motive
    • Model
    • Pacific
    • Train
    • Two
    • One
    • Passenger
    • Preserved
    • Display
    • Locomotive
  • a1a-a1a
    • Kw
    • Electro-motive
    • General
    • E7
    • Hp
    • Train
    • Passenger
    • Preserved
    • Built
    • Display
    • Locomotive
    • Model
  • electro-motive division
    • Kw
    • General
    • Hp
    • Train
    • Passenger
    • Preserved
    • Display
    • Locomotive
    • Model
    • Museum
    • North
    • Power
  • emd e-units
    • Passenger
    • Model
    • Locomotives
    • Units
    • Earlier
    • Hp
    • Kw
    • Nose
    • General
    • Preserved
    • Display
    • Museum
  • railroad museum of pennsylvania
    • Museum
    • Pennsylvania
    • Railroad
    • Display
    • Units
    • Preserved
    • Series
    • Power
    • Train
    • Diesel
  • pennsylvania railroad
    • Museum
    • Railroad
    • Display
    • Units
    • Preserved
    • Series
    • Train
    • Power
    • Diesel

Connections between topic areas Semantic bridges

For EMD E7, one of the stronger structural bridges in this analysis connects EMD E7 with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
EMD E7 — Overview · splits 21 ⟂ 14
EMD E7 — In film · splits 23 ⟂ 12
EMD E7 — Original owners · splits 30 ⟂ 5
EMD E7 — Surviving example · splits 32 ⟂ 3

Map overview Semantic statistics

EMD E7

Nodes35
Edges34
Triples32
Avg. degree1.94
Density0.057143
Components1

Source & methodology

TTTA analyzes the structure around EMD E7 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Measurement & Products, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — EMD E7 · EN edition · Analysis: TopicsToTalkAbout

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