Old School Model Works : Sport Air 40

An easy-to-handle, quick-building, great-looking design that’s quite aerobatic.

The Sport Air 40 stands out as one of the more visually appealing aircraft in the 40-size market, thanks to its clean lines and striking resemblance to several full-scale light aircraft.

This excellent all-around sportster will attract many favorable comments at the flying field, not only because of its good looks, but also because of how great it flies.

As with every Old School Model Works kit, our Sport Air 40 is a build-it-yourself airframe, designed and laser-cut from high quality balsa wood and light ply.

Included are new, simplified building features as well as laser-cut precision and self-aligning parts to make this all-time favorite even better. For example, our exclusive Web-Lock construction makes building the wing panels a snap. Rather than the sheer webs being an afterthought, they are utilized during the build to properly space, position, and lock in each rib.

We have completely updated the airframe with laser-cut and self-aligning parts. The fuselage is built around a self-aligning, light-weight box for added strength. Surrounding this is the outer balsa skin, which is strong, light-weight, and twist-resistant even when performing high-stress maneuvers. The balsa/ply airframe makes the Sport Air 40 uncomplicated, lightweight, and easy-to-build.

Power can come from glow or electric powerplants. We've designed the fuselage with a magnetic top hatch, so you have quick access to either your fuel tank or batteries. Also the tray can be removed to give access for mounting an ESC or flight pack battery.

Another thing you’ll notice is that the Sport Air 40 has a bit more ground clearance than a typical 40 sized design. It’s longer landing gear give you the ability to easily fly from grass fields.

When it comes to aerobatics, the Sport Air 40 doesn’t disappoint. While it may not be as precise as a dedicated pattern bird, it is incredibly forgiving and can easily perform a wide range of maneuvers. Even with the controls increased for aerobatics, landings are one of the Sport Air .40’s strong suits, due to its excellent low-speed stability.

Our Old School Model Work's Sport Air 40 is a Vintage R/C Society legal design for enjoying vintage fly-ins and contests.

Specifications:

Wingspan: 58 inches

Wing Area: 638 sq. inches

Length (airframe only): 43.5 inches

Weight: 4.5-5.5 pounds RTF

Radio: 4 channel
• 4 40-70 in./oz. servos (Standard servos - similar to HS-311)
• 1 additional servo for throttle, if using a glow engine

Power:
• Glow (.35-.46 engine, 6 ounce tank, fuel tubing)
• Electric (equivalent brushless motor - 600+ watt, 80+ amp ESC, 4S LiPo)

Thinking of going electric? Click the icon to the left for suggested motor, ESC, battery and prop combinations, courtesy of Innov8tive Designs.
WARNING: This product (wheel collars) can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information click here.

 

All Old School Model Works kits feature:

Precision laser-cut parts

Included in every Old School Model Works kit are all the wing ribs, fuselage formers, and other wood needed to build the aircraft.

Interlocking parts

We've engineered each kit to give you the best chance of success. Each laser-cut part interlocks with the next for an accurate and secure joint.

Rolled Plans

Each of our kits contains a set of rolled plans, never folded. They are full-size, highly detailed, and computer-drawn for accuracy.

Illustrated Instructions

A step by step manual with plenty of photo illustrations is included in each kit. We also provide links to online, clear, hi-rez photos for each step.

Pre-Bent Landing Gear

Bending your own landing gear is hard. So that's why we include pre-bent main landing gear wire ready for you to assemble.