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Black Horse Ryan ST-A Special 2350mm (92.52") Wingspan - ARF

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Ryan ST-A Special 2350mm (92.52") Wingspan from Black Horse - Balsa Wood ARF - BHRY00

The Ryan STs were a series of two seat, low-wing monoplane aircraft built in the United States by the Ryan Aeronautical Company. They were used as sport aircraft, as well as trainers by flying schools and the militaries of several countries.

The ST-A was further developed as the ST-A Special, with a super-charged 150HP Menasco C4-S engine of increased power.

The model is scaled to approximately 1:3.8 and attention was paid to a true to original appearance and best flight characteristics. The model was designed for electric drives but can also be operated with an internal combustion engine about 30cc displacement.

  Visit the Official Black Horse Ryan ST-A Special 2350mm Discussion Thread on for additional photos, videos, reviews, and customer Q&A.


  • High level of prefabrication right out of the box
  • Lightweight, strong, and partially sheeted laser cut balsa and plywood construction
  • Covered in high quality Oracover
  • Heavy-duty hinges on all control surfaces
  • Large easy access fuel tank/battery/servo access hatches with sprung loaded latches
  • Painted and detailed cockpit and interior included
  • Fiberglass control horns with ball link connector
  • Hand painted pilot included
  • Oleo suspension struts
  • comprehensive control and fitting accessories included
  • Two-piece, plug-in wings simplify transportation and assembly
  • Fiberglass cowl
  • Mounts for both electric and gas power options included
  • Fully illustrated instruction manual included and also available for download (see tab above)


  • Black Horse Ryan ST-A Special 2350mm (92.52") Wingspan - ARF

Requires (Electric):

Requires (Gas):

  • Engine: 20 - 30cc 2-stroke, NGH GT25 recommended or 30-35cc 4-stroke, NGH GF30 recommended
  • Gas Propeller: 15x8-16x10 2 Stroke, 15x10-17x10 4 Stroke
  • 9x 45g standard servos - we recommend HS-625MG
Customer Note

Black Horse ARF models are constructed out of balsa wood and plywood. These are not foam models. The assembly of balsa wood ARF aircraft requires basic model building skills including the installation of servos, ESC, and motor (or gas engine). 

Product Specifications:

AGE LEVEL : 14 and up
SKILL LEVEL : intermediate
BUILD TIME : 6+ hours

Model Scale

1/4 Scale


2350mm / 92.52in


1730mm /68.11in


6000-6400g / 13.2-14.1lbs

CG (Center of Gravity)

100mm from the leading edge wing root

Power System

1400-1900 Watt Brushless Outrunner Motor or 20 - 30cc 2 or 30cc 4-stroke (required)

Electronic Speed Control

100 - 120A (required)

Propeller / EDF

16x10 - 17x10 (required)


Electric - 7 x 45g standard (required)
Gas - 8 x 45g standard (required)

Landing Gear


Required Battery

TWO 4 Cell 14.8V 5000 mAh LiPo Batteries with EC5 connector (required)

Required Radio

6+ Channel (required)











Hinge Type

Nylon Heavy Duty pin hinges


Balsa and plywood

Skill Level


Build Time

6+ Hours

Recommended Environment


Product Videos

Product Spare Parts

APC 16x10 Gas Propeller LP16010
1 review


APC 17x10 Gas Propeller LP17010
1 review


Product Questions & Answers

NOTE: Questions submitted on this page are answered by customers who have previously purchased this item. If you have a support related question that requires immediate assistance, please visit our Help Center.

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Product Manuals:


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