MODEL POWER 5015-B Ahm Milwaukee Alco Century Diesel Locomotive 424 AA-798

( Brand: Model Power ), ( Manufacturer Part Number: 5015-B ), ( Power Type: Dc ), ( Assembly Status: Ready To Go/pre-built ), ( Color: Orange Black ), ( Replica Of: Santa Fe ), ( Wheel Configuration: Bo-bo ), ( Material: Plastic, White Metal ), ( Grade: C-2 Restoration Required ), ( Age Level: 17 Years Up ), ( Control System: Analog ), ( Gauge: Ho ), ( Vintage: No ), ( California Prop 65 Warning: This Product Can Expose You To Chemicals Including But Not Limited To Lead, Which Is Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. For More Information Go To Www.p65warnings.ca.gov. ), ( Type: Diesel Locomotive ), ( Unit Type: Unit ), ( Rail System: Two-rail System ), ( Corporate Roadname: Milwaukee ), ( Theme: Transportation ), ( Features: Painted ), ( Time Period Manufactured: 1970-1979 ), ( Country Of Origin: Austria )

Review MODEL POWER Ahm Milwaukee Alco Century 424 Diesel Locomotive Needs Work

The **Milwaukee Road s Century 424 diesel locomotive, specifically the **Power 5015-B (AAR Class AHM-5015)**, is a legendary example of mid-20th-century American railroading engineering, embodying both raw power and enduring reliability. Built in 1955 by the **Alco (American Locomotive Company)** as part of the iconic **Century Series**, this model was designed to haul heavy freight across the vast, rugged landscapes of the Upper Midwest, where the Milwaukee Road operated its legendary **Hiawatha** and **Olympian Hiawatha** passenger trains. The **5015-B** belongs to the **B-B** wheel arrangement variant, featuring two three-axle trucks that distribute its formidable weight approximately **400,000 pounds** across the rails, ensuring stability even on the most demanding grades. Powered by a **2,000-horsepower** **251C** V-type diesel engine, this locomotive was one of the most advanced of its time, incorporating **Alco s revolutionary** **Winton** cylinder design and **electro-pneumatic controls**, which allowed for smoother acceleration and better fuel efficiency than earlier steam-era counterparts. The **Century 424** was also equipped with **Alco s signature** **dual-cycle** combustion system, which provided exceptional torque and durability, making it a workhorse capable of pulling **100 car freight trains** or accelerating **heavy passenger consists** up steep mountain grades with ease.

Visually, the **5015-B** exudes a timeless, industrial elegance, with its **sleek, streamlined bodywork** a hallmark of the **Century Series** designed to reduce wind resistance and improve aerodynamics. The locomotive s **silver-gray paint scheme**, often adorned with **Milwaukee Road s distinctive** **red-and-white stripe accents**, was not just for aesthetics but also served a functional purpose, reflecting heat away from the engine while maintaining visibility for the crew. The **front-end design** features a **sloped, angular nose** with **dual headlights** and **air horns**, giving it a commanding presence on the rails. Inside, the cab was designed with **ergonomic efficiency** in mind, offering the engineer and fireman **wide visibility** through **large, curved windows** and **adjustable seating** for long hauls. The **control panel** was a marvel of its era, featuring **mechanical gauges, throttle levers, and air brake controls**, all meticulously arranged for quick, intuitive operation.

Beyond its operational prowess, the **Century 424** holds a special place in railroading history as part of the **Milwaukee Road s** ambitious expansion during the **1950s and 1960s**, a time when dieselization was transforming the industry. These locomotives were instrumental in maintaining the **Milwaukee Road s** reputation for **punctuality and efficiency**, even as competition from newer railroads and the rise of trucking threatened its dominance. The **5015-B** was particularly well-suited for the **Rocky Mountain region**, where its **high horsepower and climbing ability** allowed it to navigate the **tough grades of the Wasatch Mountains** and the **Bitterroot Range** with ease. Over the decades, many of these locomotives were **retired and sold for scrap**, but a select few have been **preserved as museum pieces**, serving as tangible reminders of an era when **American railroads were at the height of their technological and operational capabilities**.

For collectors, enthusiasts, and historians, the **Power 5015-B (AHM-5015)** represents more than just a piece of machinery it is a **symbol of an industrial age**, a testament to the **innovation of Alco s diesel era**, and a **living relic of the Milwaukee Road s golden years**. Whether displayed in a **railroad museum**, featured in a **documentary**, or admired by fans at a **railfan event**, this locomotive continues to inspire awe with its **combination of brute strength, aerodynamic grace, and historical significance**. Its legacy endures not only in the **steel and mechanics** that make it a functional marvel but also in the **stories of the crews who operated it**, the **cargo it moved**, and the **passenger trains it helped carry** across the heartland of America.

### **Pros and Cons of Buying a Power 5015-B (AHM 5015, Milwaukee Alco Century 424 Diesel Locomotive, AA-798)**

#### **Overview**

The **Power 5015-B** is a **Milwaukee Road Century 424 diesel-electric locomotive**, originally built by **Alco** (American Locomotive Company) in the late 1950s. These locomotives were among the most powerful and advanced of their time, featuring a **20-cylinder 2516B prime mover** producing **3,000 horsepower**. They were widely used by major railroads, including the **Chicago, Milwaukee, St. Paul & Pacific Railroad (Milwaukee Road)**, before being retired in the 1980s. Today, they are highly sought-after by collectors, museums, and private operators due to their historical significance, mechanical robustness, and aesthetic appeal.

---

### **Pros**

1. **Historical Significance & Prestige**

- The **Century 424** was a landmark in diesel locomotive design, representing the pinnacle of Alco s engineering before the company s decline.

- It was one of the first locomotives to feature a **fully enclosed cab**, advanced electrical systems, and a **high-horsepower diesel engine**.

- Owning one places you among a small group of enthusiasts who appreciate classic American railroading.

2. **Mechanical Robustness & Reliability**

- The **20-cylinder 2516B engine** was known for its durability, capable of sustained heavy hauling.

- Many surviving examples have been **restored to excellent condition**, with some still operational on heritage railroads.

- The **electrical and mechanical systems** are well-documented, making maintenance feasible for skilled technicians.

3. **Aesthetic Appeal & Iconic Design**

- The **streamlined, bullet-nose design** is one of the most recognizable in railroading history.

- The **Milwaukee Road livery** (black with red and yellow accents) is highly desirable among collectors.

- The locomotive s **sleek, futuristic look** from the 1950s makes it a centerpiece for museums and displays.

4. **Operational Flexibility**

- While primarily built for **freight service**, some have been adapted for **passenger or tourist train operations**.

- Many are preserved on **heritage railroads**, where they can be used for special events, excursions, or regular service.

- Some owners have modified them for **private charters or corporate events**, adding to their versatility.

5. **Strong Community & Support Network**

- The **Alco Locomotive Society** and other railfan groups provide resources, restoration advice, and networking opportunities.

- There is a **dedicated market** for Century 424s, with parts and expertise available from other owners.

- Auction sales (e.g., **Bridgemall, Rail Auction Group**) often feature these locomotives, indicating steady demand.

6. **Potential for Investment & Appreciation**

- Well-preserved examples have **appreciated significantly** over the years, especially those with original paint schemes.

- Restored locomotives with **operational status** are particularly valuable to collectors.

- Some have been sold for **over $1 million**, depending on condition and provenance.

7. **Technological Interest for Engineers & Enthusiasts**

- The **electro-pneumatic controls, generator-alternator system, and traction motors** offer a fascinating study in vintage diesel technology.

- For those interested in **railroading history**, the Century 424 represents a transitional era between steam and modern diesels.

---

### **Cons**

1. **High Acquisition Cost**

- A **restored, operational Century 424** can cost **$500,000 to over $1 million**, depending on condition and provenance.

- Even non-operational examples in good cosmetic condition may require **$200,000 $500,000** for restoration.

- This makes them **financially prohibitive** for most private individuals unless they have significant funds or institutional backing.

2. **Complexity & Maintenance Requirements**

- The **20-cylinder 2516B engine** is **large and complex**, requiring specialized knowledge for repairs.

- **Electrical systems** (generator, traction motors, controls) are outdated but still functional, demanding expertise to maintain.

- **Parts availability** can be challenging, as Alco went out of business in 1969, and many components must be sourced from other Alco locomotives or rebuilt.

- **Fuel and lubrication systems** may need upgrades to meet modern standards.

3. **Space & Storage Challenges**

- A **Century 424 is massive** (over **70 feet long, 12 feet wide, and 15 feet tall**), requiring **dedicated storage** (indoor or outdoor, weatherproof).

- Transporting the locomotive for events or railroads requires **specialized flatbed railcars or road transport**, adding logistical complexity.

- **Insurance costs** for such a high-value asset can be substantial.

4. **Operational & Legal Restrictions**

- **Federal and state regulations** govern locomotive operation, including **safety inspections, noise limits, and emissions compliance**.

- Many **heritage railroads have specific requirements** for locomotives, which may include **restoration standards or operational protocols**.

- **Insurance and liability** can be difficult to obtain, especially for private owners not affiliated with a railroad.

- **Fuel costs** (diesel) and **maintenance expenses** add up over time, making long-term ownership costly.

5. **Limited Market for Private Ownership**

- Unlike smaller or more common locomotives, the **Century 424 is not easily moved between owners** due to its size and specialized use.

- Most private owners **lease or donate** their locomotives to museums or railroads rather than keep them in personal collections.

- **Resale value** can be unpredictable, as demand fluctuates based on restoration trends and economic conditions.

6. **Time & Commitment Required**

- Restoring a **Century 424 to operational condition** is a **multi-year, labor-intensive** project requiring **mechanical, electrical, and historical expertise**.

- Even for those with institutional support (museums, railroads), the process can take **years** due to part shortages and technical challenges.

- **Volunteer labor** is often needed, which may not be feasible for individuals without access to railfan networks.

7. **Risk of Further Decline or Loss**

- Despite their popularity, **Alco locomotives are not immune to mechanical failures**, especially in older examples.

- **Natural wear and tear** (rust, electrical corrosion, engine wear) can lead to unexpected repair costs.

- **Storage conditions** (outdoor exposure, humidity) can accelerate deterioration if not properly managed.

---

### **Conclusion**

The **Power 5015-B (Century 424)** is a **legendary locomotive** that embodies the golden age of American railroading. It offers **historical prestige, mechanical interest, and aesthetic beauty**, making it a **dream acquisition** for serious collectors, museums, and rail enthusiasts. However, the **high cost, complexity, and ongoing maintenance demands** make it **impractical for casual buyers or those without institutional support**.

For **individuals with deep pockets and a passion for railroading history**, owning a Century 424 can be **highly rewarding**, both personally and financially (if properly preserved). For **museums, heritage railroads, or corporate collectors**, it represents a **valuable asset** that enhances public engagement with rail history.

- **Purchasing a smaller, more affordable classic locomotive** (e.g., EMD F-unit, GP9, or a restored switcher).

- **Investing in a non-operational example** for display purposes, accepting that full restoration may not be feasible.

- **Joining a railroad or preservation group** to gain access to such locomotives without the full ownership burden.

---

### **Final Recommendation**

You have **significant financial resources** (or institutional backing) to acquire and maintain it.

You are **deeply committed** to railroading history and willing to invest **years of effort** in restoration.

You have **access to a railroad, museum, or preservation group** that can provide operational support.

You are prepared for **high insurance costs, storage challenges, and ongoing mechanical work**.

You expect a **low-cost, easy-to-maintain hobby** this is a **major investment** in time and money.

You lack **mechanical or electrical expertise** (or access to skilled technicians).

You do not have **dedicated storage and transport solutions**.

You are primarily interested in **modern or smaller locomotives** that are more accessible.

- For **budget-conscious buyers**, consider a **restored EMD GP9 or SD40** still powerful but more affordable.

- For **display purposes**, a **non-operational Century 424** (if well-preserved) can be a **valuable

Details:

There may be cosmetic issues throughout, See photos for consideration. I can say that they are smoke free but cannot pet. With God All Things Are Possible.

part #: 5015 prices

• $25.00-$200.00

specifications gscalemodeltraingi:

• brand: Model Power
• mpn: 5015-b
• power type: Dc
• assembly status: Ready To Go/pre-built
• color: Orange Black
• replica of: Santa Fe
• wheel configuration: Bo-bo
• material: Plastic, White Metal
• grade: C-2 Restoration Required
• age level: 17 Years Up
• control system: Analog
• gauge: Ho
• vintage: No
• california prop 65 warning: This Product Can Expose You To Chemicals Including But Not Limited To Lead, Which Is Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. For More Information Go To Www.p65warnings.ca.gov.
• type: Diesel Locomotive
• unit type: Unit
• rail system: Two-rail System
• corporate roadname: Milwaukee
• theme: Transportation
• features: Painted
• time period manufactured: 1970-1979
• country of origin: Austria

payments gscale Model traingi:

• wallet: Apple-pay
• credit card: Diners-club
• other

offer gscale Model traingi:

• options: Ship-to-home
• started: April 3, 2026
• quantity: 1
• sold: 0
• availability: In Stock

general gscale Model traingi:

• Model Railroads Trains > Railroads Trains > Locomotives
• condition: Used

shipping gscale Model traingi:

• type: Calculated
• transit: 5-11 Days
• class: Standard
• cost: $13.30
• service: USPS Ground Advantage
• carrier: USPS

seller gscale Model traingi:

• rating: 99.8%
• # reviews: 13099
• city: Chillicothe, Ohio

returns gscale Model traingi:

• policy: No Returns

Model Power 5015 Is Similar To:

• 019571203352 Mrc New Sound Power Light Model Railroad Train (22.2% similar) Model railroad train transformer sound Power LIGHT9000 Marc this is a new-in-the-box transformer. I just opened the box to take pictures. The transformer includes a speaker and 2 light modules. It can operate ho, n, g, and other dc Model trains. Buyer pays calculated shipping...(September 11th, 2018)
• 037135009486 Model Power G-scale Scenery Item-black (35.9% similar) 6' scale height . The fence looks much better than picture. G-scale scenery item-new Model Power black iron fence plastic fence Model sections one section is double gated. Sometimes my photography isn't the best total length of black fence. Will gladly combine shipping whenever possible. Visit my...(March 9th, 2017)
• 1440 Mrc Model Rr Gauge Tech Ii Railpower Truesound Power Transformer (19.6% similar) What you see is will receive its perfect condition railway Power transformer received this item only with no cables accessories and remote...(August 23rd, 2018)
• 15106 Hartland Locomotive Works Undecorated Mini Gondola Scale Model Trains (29.6% similar) Heartland locomotive works has been producing excellent scale Model trains for decades. Heartland locomotive works is a premiere American manufacturer of scale trains. Heartland locomotive works scale Model trains railroads un decorated mini gondola new in the original box...(November 4th, 2018)
• 15322 Hlw Hartland Locomotive Works Mining Ore Car Scale Model Trains (31.9% similar) ...(March 6th, 2018)
• 15431 Hartland Locomotive Works Milk Tank Car Scale Model Trains Railroads (27.4% similar) Heartland locomotive works scale Model trains railroads milk tank car new in the original box. Heartland locomotive works is a premiere American manufacturer of scale trains. Heartland locomotive works has been producing excellent scale Model trains for decades...(August 29th, 2018)
• 1601 Model Power Lgb Charleys Tavern With Instructions Decals Box (26.4% similar) Please for more collectible promos and die cast at: stores. Box condition: the original packaging is in excellent condition...(June 21st, 2018)
• 1614 Lgb Model Power Oak (23.7% similar) ...(August 5th, 2017)
• 1619 Model Power Lgb Ps School With Instructions Decals Box (24.8% similar) Box condition: the original packaging is in excellent condition. Please for more collectible promos and die cast at: stores...(June 21st, 2018)
• 1620 Lgb Model Power G (20.7% similar) Model Power lexical lime springs interlocking tower no inbuilt and complete in open box. Impressive scale accessory, weather proof...(January 17th, 2018)
• 1624 Lgb Model Power Scale Fresh Farms Dairy Box (28.2% similar) Its sold here has used best efforts to inspect the items for sale and create furnish photographs that fairly adequately depict type, condition image of goods at time...(June 27th, 2018)