This document describes the features and characteristics of an aircraft called Extra 300. It is an aerobatic airplane with excellent maneuverability and stability. It is recommended to use a 2-cycle engine of 0.60-0.90 or a 4-cycle engine of 0.90-1.20. It also warns against using an engine that is too large, as it may cause structural failure of the aircraft.
This manual provides step-by-step instructions for assembling the Goldberg Extra 300 K-55 radio-controlled model aircraft. It details the construction of major components including the horizontal stabilizer, elevator, and vertical fin, guiding the user from parts identification to final assembly stages.
The document also lists necessary items to complete the kit, such as the radio guidance system, engine, propeller, and specific tools like modeling knives, sandpaper, and covering irons. It includes important safety warnings regarding the operation of radio-controlled models and emphasizes the need for experienced assistance during initial test flights.
| Wingspan | 68" |
|---|---|
| Length | 61" |
| Weight | 7.5-8.5 lbs. |
| Engine Size (2-cycle) | .60 -.90 |
| Engine Size (4-cycle) | .90 -1.20 |
A 4 channel minimum radio guidance system is required to complete this kit.
The recommended engine sizes are 2-cycle .60-.90 or 4-cycle .90-1.20.
The model must always be operated and flown in accordance with the safety standards of the Academy of Model Aeronautics.