ATHEARN 77847 Ho Scale Missouri Pacific Diesel Locomotive 77841 GP50 Mopac 3500

( Brand: Athearn ), ( Manufacturer Part Number: 77847 ), ( Power Type: Dc ), ( Assembly Status: Ready To Go/pre-built ), ( Color: Blue ), ( Wheel Configuration: Bo-bo ), ( Material: Plastic ), ( Age Level: 17 Years Up ), ( Gauge: Ho ), ( Type: Diesel Locomotive ), ( Rail System: Two-rail System ), ( Corporate Roadname: Missouri Pacific ), ( Theme: Transportation ), ( Country Of Origin: China )

Review ATHEARN Read Ho Scale Missouri Pacific Diesel Locomotive Mopac #3500

The **Athearn 77847 HO Scale Missouri Pacific GP50 Diesel Locomotive (MOPAC 3500)** is a meticulously crafted model that captures the raw power and iconic presence of one of the most recognizable locomotives in American railroading history. Built to the highest standards of accuracy and detail, this HO scale (1:87) replica faithfully represents the **Missouri Pacific GP50**, a robust and versatile diesel-electric unit that played a pivotal role in the railroad s operations during the mid-to-late 20th century. The **MOPAC 3500** was one of the first GP50s delivered to the Missouri Pacific system, a model that became synonymous with the railroad s expansion and freight-hauling dominance across the South and Southwest. Athearn s interpretation of this locomotive is not merely a static representation but a dynamic piece of model railroading that brings authenticity to any HO layout.

The bodywork of the **77847** is constructed from high-quality materials, ensuring durability and a smooth, lifelike finish. The **GP50 s** iconic long hood and short pilot are rendered with precise proportions, complete with detailed panel lines, rivet patterns, and weathering that subtly enhances its aged yet robust appearance. The **Missouri Pacific livery** is executed with meticulous attention to detail, featuring the railroad s classic **red, white, and blue** scheme deep maroon body with crisp white lettering, bold **MOPAC** markings, and the distinctive **MP logo** prominently displayed on the sides and cowcatcher. The **road number 3500** is clearly visible, adding a touch of historical authenticity to the model. The **headlight assembly** is intricately designed, with separate lenses and a realistic amber glow when activated, while the **coupler** and **knee action** are fully functional, allowing for smooth connections in dynamic operation.

Under the hood, the **77847** is powered by Athearn s **DCC-ready** sound system, delivering an immersive auditory experience that brings the locomotive to life. The **realistic diesel engine sounds**, including **pistons, exhaust, and intake noises**, are layered with **DCC throttle control**, allowing operators to adjust speed and direction seamlessly. The **DCC decoder** also supports **lighting effects**, such as **headlight, running lights, and cab lights**, which can be programmed to respond to throttle inputs or operate independently. For those who appreciate the finer details, the model includes **functional brake lights** and **smoke emission** (via the **smoke unit**), adding depth to its operation and enhancing the realism of a moving locomotive.

The **chassis** of the **MOPAC 3500** is robust, featuring **Athearn s durable metal frame** for stability and smooth rolling. The **wheels** are precision-molded for a realistic ride, and the **axles** are designed to handle the stresses of frequent movement without wobbling. The **couplers** are **knuckle couplers**, ensuring proper connections with other models, while the **knee action** allows for a more natural motion when the locomotive is in motion. For collectors and operators who demand the highest level of realism, the **77847** includes **optional sound and lighting upgrades**, such as **DCC-exclusive features** or **additional smoke effects**, making it a versatile addition to any HO-scale layout.

Beyond its technical and operational excellence, the **Athearn 77847 Missouri Pacific GP50 (3500)** holds significant historical value. The **GP50** was a workhorse of the **Missouri Pacific Railroad**, a system that stretched from the Midwest to the Gulf Coast, and was known for its extensive freight and passenger operations. This locomotive, in particular, would have been part of the **MP s fleet during the 1950s and 1960s**, a period when dieselization was transforming American railroading. The **MOPAC 3500** was likely used on **mainline freight runs**, hauling coal, grain, and other commodities across the region, and its presence on a model layout evokes the nostalgia of an era when railroads were the backbone of American industry.

For enthusiasts who appreciate both **historical accuracy and operational realism**, the **Athearn 77847** is an exceptional choice. Whether displayed as a static centerpiece or integrated into a dynamic layout, this model captures the **power, presence, and legacy** of the **Missouri Pacific GP50**. Its **detailed livery, functional sound system, and durable construction** make it a standout addition to any collection, while its **DCC compatibility** ensures it can be seamlessly integrated into modern model railroading setups. From the **deep rumble of its diesel engine** to the **smooth motion of its wheels**, the **MOPAC 3500** is more than just a model it s a tribute to the locomotives that once defined American railroading.

### Pros and Cons of buying a Athearn HO Scale 77847 Missouri Pacific GP50 Diesel Locomotive (MOPAC 3500)

1. **High Quality Construction** Athearn is known for producing detailed and well-built HO scale models. This GP50 features accurate proportions, fine paintwork, and realistic details like operating headlights, a functional bell, and a working coupling system.

2. **Historical Accuracy** The Missouri Pacific (MOPAC) GP50 was a common and well-loved road switcher in the mid-20th century. The 3500 unit was part of a large fleet, making this model a popular choice for modelers aiming for authenticity.

3. **Operating Features** The locomotive includes DCC-ready electronics (with optional sound and lighting upgrades), allowing for realistic operation on modern layouts. Some versions may even come with pre-installed sound systems.

4. **Compatibility** As an HO scale model, it fits seamlessly with most HO gauge layouts, including those with DCC systems. The model s size and design make it suitable for both mainline and branch-line modeling.

5. **Resale Value** Athearn s well-regarded models often hold their value well, especially if they are in good condition. Collectors and serious modelers may still seek out this specific unit.

6. **Versatility** The GP50 was used in various roles, from mainline freight to yard switching, making this model adaptable for different modeling themes.

7. **Brand Reputation** Athearn has a long-standing reputation for producing high-quality, durable models. Their GP50 series, in particular, is often praised for its attention to detail.

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1. **Cost** This model is not inexpensive, especially if purchased new or in pristine condition. The price may be a barrier for hobbyists on a tight budget, particularly if they are also investing in additional rolling stock or track.

2. **Maintenance Requirements** Like all detailed models, the GP50 may require occasional cleaning, paint touch-ups, or minor repairs to keep it looking its best. The operating features (lights, bell, etc.) may need occasional battery replacements or adjustments.

3. **Weight Limitations** Some HO scale models, including certain Athearn locomotives, may be lightweight. This can affect their stability on curves or their ability to pull heavy trains, though this is less of an issue with modern, heavier-duty models.

4. **Sound System Limitations (if applicable)** While some versions of this model come with sound, others may require aftermarket upgrades. The quality of pre-installed sound systems can vary, and additional investments may be needed for a fully immersive experience.

5. **Storage Space** A detailed locomotive like this takes up space, especially if stored with other models. Hobbyists with limited storage may need to prioritize carefully.

6. **Potential for Counterfeit or Knockoff Models** Due to its popularity, there are occasional counterfeit or lower-quality versions of this model sold online. Buyers should verify the seller s reputation and check for authenticity markers (e.g., packaging, serial numbers).

7. **Compatibility with Older Layouts** If the modeler s layout uses analog operation, they may need to invest in a DCC decoder or other conversion kits to fully utilize the locomotive s features.

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The Athearn HO scale 77847 Missouri Pacific GP50 (MOPAC 3500) is an excellent choice for modelers who prioritize quality, historical accuracy, and operating features. Its detailed construction and compatibility with modern layouts make it a standout model, but its cost and maintenance needs should be carefully considered. For those willing to invest in a high-quality, durable locomotive that adds realism to their layout, this GP50 is a strong recommendation. However, hobbyists on a budget or those with limited space may want to explore alternative models or used options before making a purchase.

If you are a serious modeler with a well-equipped layout and a budget that can accommodate a premium HO scale locomotive, the Athearn 77847 GP50 is highly recommended. It offers a balance of historical authenticity, operating features, and durability that few models can match. For those who are new to modeling or working with tighter budgets, consider purchasing a used version from a reputable seller or exploring other GP50 models from different manufacturers to find the best fit for your needs. Always verify the model s condition and authenticity before finalizing a purchase.

Details:

I do not believe the reverse lighting worked. DC Train ran during testing, see video.

part #: 77847 prices

• $60.00-$95.00

specifications gscalemodeltraingi:

• brand: Athearn
• mpn: 77847
• power type: Dc
• assembly status: Ready To Go/pre-built
• color: Blue
• wheel configuration: Bo-bo
• material: Plastic
• age level: 17 Years Up
• gauge: Ho
• type: Diesel Locomotive
• rail system: Two-rail System
• corporate roadname: Missouri Pacific
• theme: Transportation
• country of origin: China

shipping gscale model traingi:

• service: USPS Ground Advantage
• carrier: USPS
• type: Calculated
• cost: $10.81
• class: Standard
• transit: 4-8 Days

payments gscale model traingi:

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

offer gscale model traingi:

• started: March 12, 2026
• quantity: 1
• sold: 0
• options: Ship-to-home
• best offers: True
• availability: In Stock

returns gscale model traingi:

• time: 30 Days
• method: Money back
• paid by: Buyer
• policy: Returns Accepted

seller gscale model traingi:

• city: Canton, Ohio
• # reviews: 2505
• rating: 99.8%

general gscale model traingi:

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

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