Old School Model Works OSM-LARKKIT Lark R/C Balsa Kit

The Old School Model Works Lark R/C Balsa Kit is a refined version of an iconic low-wing trainer design with over five decades of proven performance. Combining trainer-like stability with sport-pattern aerobatic capability, the Lark is the perfect step-up airplane for pilots ready to move beyond high-wings — and a rewarding everyday flyer for experienced pilots who want a compact, trunk-sized sport plane. As a Vintage R/C Society legal design, it's also eligible for vintage fly-ins and contests.

In The Box

• Laser-cut balsa and plywood airframe components with self-aligning tabs
• Precision laser-cut wing and stab ribs with airfoil-shaped stab
• Self-aligning lightweight fuselage box structure with balsa skin
• Magnetic top hatch for quick battery or fuel tank access
• Premium USA-sourced hardware package

Needed to Complete

• 4-channel radio system and 4 standard servos (40–70 in/oz)
• Propeller
• Engine/motor mount and mounting hardware
• "Y" servo harness (for ailerons)
• Pushrods: two 5" (ailerons), two 26" (elevator and rudder), one 14" (nose gear), one 10" (throttle if glow)
• Clevises: 10 (electric) or 12 (glow)
• Wheels: one 2.25" nose, two 2.5" mains
• Covering (typically 2 rolls)
• Optional 2.25" or 2.5" spinner
• Electric: 550W+ brushless motor, 40A+ ESC, 3–4S LiPo
• Glow: .25–.40 engine, 4–6 oz tank, fuel tubing

Classic Low-Wing Design, Modernized

Designed as a first low-wing trainer over five decades ago, the Lark remains a terrific everyday sport plane. OSMW's version keeps all of the iconic looks and great flying characteristics of the original, with laser-cut precision, self-aligning parts, and simplified construction features that make building faster and more accurate than ever.

Easy to Build

Wing and stab assembly are straightforward — all ribs include alignment tabs that allow you to quickly and precisely position them on your building board. The fuselage is built around a self-aligning lightweight box structure for added strength, surrounded by balsa skin that is strong, lightweight, and twist-resistant.

Wide Flight Envelope

In the air, the Lark is aerobatic yet forgiving — a perfect entry-level low-wing experience. Slow it down for relaxed touch-and-goes and low passes, or throttle up for loops, rolls, Cuban 8s, and hammerhead turns. The Lark packs full aerobatic capability into a compact airframe that fits completely assembled in the trunk of most cars.

VRCS Legal Vintage Design

The Old School Model Works Lark is a Vintage R/C Society qualifying design, making it eligible for vintage fly-ins and contests.

Specifications