Allison 501-D13 Prop Jet Aircraft Engine Plastic Model Kit


Atlantis SKU: AMCH1551


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1/10 Scale. This model comes molded in 4 colors, Black, Silver, Blue and Orange. With 2 color 8 page instructions, educational STEM booklet, updated decals and Officially licensed!

  • Complete with display stand.
  • Over 240 parts.
  • Skill level 3.


Allison Prop-Jet info

Prop-Jet (also referred to as Turbo Prop) Principles of Operation: Air enters the compressor inlet and is compressed to over 6 times normal atmospheric pressure. This high-pressure air is discharged rearward into the combustion chamber. The resulting hot combustion gases pass through two 2-stage turbines. The turbine receives power from these gases and drives the compressor, while the remaining energy is extracted by the power turbine which drives the power output shaft. This shaft delivers power to the propeller reduction gearbox, which is connected to the propeller. The Turbo Prop engine operates at essentially a constant speed. Variations in aircraft power are obtained by changing the pitch of propeller blades. The Allison Turbo Prop Model Kit was made in accurate detail from actual Allison blueprints. All major moving parts of the engine are represented in this 16 inch long replica.


During the early-1950s, Allison Engine Company began development of the model 501 turboprop engine for the Lockheed C-130 Hercules. This engine would become the T56 in military service and is still in production today. On the military side, the T56 powers (or powered) the C-130 Hercules, P-3 Orion, E-2 Hawkeye, and C-2 Greyhound, while the model 501 powered the Convair 580/5800, Lockheed Electra, and the Aerospace Lines Super Guppy. In the early days of the T56, the engine was paired with an Allison Electric three-bladed propeller that initially powered the C-130A and the early Super Guppy. Some of you have heard this pair running and the gut-wrenching sound that they make at flight power levels. The T56 was later paired with the Hamilton-Standard four-bladed propeller which appeared on the C-130B and later models and retro-fitted to the C-130A. The Hamilton Standard propeller would equip all of the above-listed aircraft until they were replaced in recent years by the eight-bladed UTC NP2000 propeller.

Revell produced a kit of the model 501/T56 engine in 1/10 scale back in 1960 and featured exposed details of the engine's gearbox, compressor and turbine sections, much like the teaching rigs in full-scale used to teach engine mechanics. The kit was reissued a few times since 1960, with the last appearance in 1991. After Hobbico's bankruptcy and Revell being sold off to a German holding company, there were quite a few molds left behind in an Illinois warehouse. These molds were acquired by Atlantis Model Company and one set of those molds was the Allison turboprop engine which has just been released. The box art and instructions are the same as the original though Atlantis has updated the instructions with some color to emphasize important steps during assembly. The box art indicates that this is a GIANT kit that builds into a 16" model, which for 1960 was indeed impressive. Today, not so much, but it is rather nostalgic to see nonetheless.

The kit is molded in styrene and presented on nine parts trees, three molded in silver, two in black, two in blue, and one in orange. One could build this model without paint and it would look quite nice. With all of the details in this kit, painting the model with either an operational appearance or a training/museum scheme would really be impressive. You'll notice that the rotating portion of the jet engine is molded in disks while the fixed stators are molded in disk segments to facilitate being mounted on the movable side doors that open to reveal the interior details. When the model is fully assembled, you can turn a nob at the back of the turbine section to rotate the engine, gearbox, and propeller. The instructions warn not to turn the propeller to rotate the engine as you will shear the drive shaft, something that has happened on the full-scale engines (and not fun).

The Hamilton Standard propeller is also geared internally so that by turning the tip of the propeller hub, you can change the pitch of the propeller blades in unison. This is the one feature of the this kit I remember well as there was one of these being used at the Civil Air Patrol squadron I belonged to in high school to teach ground school. I obtained my private pilot's license there in the early 1970s and the rest of my tickets and ratings after I joined the USAF.

Like the various automotive engine kits also produced by Revell over the years, this is a nicely engineered kit that will build into something still being flown today. I had a laugh recently when someone online had commented that they'd rather have a PT6 engine. Developed some 5-6 years after the Allison engine, the Pratt and Whitney PT6 is also widely used though in much smaller aircraft. Comparing the T56 with the PT6, the largest PT6 produces about 25% of the power of the Allison.


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