Grumman S-G2 Tracker (oz9318)

About this Plan

Grumman S-G2 Tracker. Scale model twin for control line. Wing area 372 sq in, for twin .35 - .45 engines.

Quote: - "A pair of .35's? Or up to .45's. Try this beautiful twin for your next Controline project. Seldom seem as a model.

The first Tracker I had ever seen up close was at the 1971 Quonset Point Air Show where the US Navy put one on static display. At the 1973 Air Show I took over 75 photographs of this aircraft. Why so many photographs? Because little if any information was available on the Tracker at the time when I was designing my model. The S-2G Tracker is a twin-engine, high wing monoplane, manufactured by the Grumman Aerospace Corporation. It is designed for operation on land bases and/or aboard aircraft carriers with or without the aid of a catapult takeoff. It is equipped for all-weather flights.

The S-2G Tracker aircraft is primarily an anti-submarine aircraft. It is capable of searching for, detecting, and locating an enemy submarine, and then delivering a weapon to the target. The S-2G has a four man crew: pilot, co-pilot, and two ASW operators. The ASW operators assist the co-pilot and operate the sonobuoy, radar, and (MAD) magnetic anomaly detector. It is powered by two 1,525 hp Wright R1820-82W A air-cooled radial engines, each equipped with Hamilton Standard full-feathering three-bladed propellers. The armament equipment consists of six depth charges, six HVAR missiles and six additional torpedoes carried on underwing bomb racks, sonobuoys, marine markers, underwater sound (SUS), and it search light system. The internal stores or torpedo bay of the aircraft can carry two homing torpedoes, or two Mk 101 depth bombs, or one nuclear depth bomb. Photographic equipment can be suspended from the right out-board bomb rack. The S-20 Tracker has a cruising speed of 150 mph, a ceiling of 21,000 feet.

The model's wingspan is 63-1/2 in, length is 37-3/4in and the weight is around 4 to 4-1/2 lb. Area of the wing is about 372 sq in and the engine size is from .35 to .45.

Fuselage Construction: The fuselage is built in two halves, starting with the left side. All lefts and rights are in reference to the pilot. Cut out all parts for the fuselage. Assembly of fuselage starts by pinning crutch down to plan..."

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