Great American Scream Machine (Six Flags Over Georgia)
| Great American Scream Machine | |
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The lift hill
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| Six Flags Over Georgia | |
| Coordinates | 33°45′57″N 84°33′05″W / 33.76583°N 84.55139°WCoordinates: 33°45′57″N 84°33′05″W / 33.76583°N 84.55139°W |
| Status | Operating |
| Opening date | March 31, 1973 |
| General statistics | |
| Type | Wood |
| Manufacturer | Philadelphia Toboggan Coasters |
| Designer | Don Rosser, John C. Allen, William Cobb |
| Track layout | Out-and-back |
| Lift/launch system | Chain Lift |
| Height | 105 ft (32 m) |
| Drop | 89 ft (27 m) |
| Length | 3,450 ft (1,050 m) |
| Speed | 57 mph (92 km/h) |
| Inversions | 0 |
| Duration | 2:00 |
| Max vertical angle | 45° |
| Capacity | 1200 riders per hour |
| G-force | 3.7 |
| Height restriction | 42 in (107 cm) |
| Trains | 2 trains with 4 cars. Riders are arranged 2 across in 3 rows for a total of 24 riders per train. |
 Flash Pass Available |
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Great American Scream Machine at RCDB Pictures of Great American Scream Machine at RCDB |
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Great American Scream Machine is a wooden roller coaster located at Six Flags Over Georgia. The 105-foot (32 m)-tall ride reaches a top speed of 57 miles per hour (92 km/h). GASM, as it is known to park workers, was built by the Philadelphia Toboggan Coasters in 1973 with Marvin M. Black & Sons as the contractor. When it opened, it was the tallest, longest and fastest roller coaster in the world, and riders were given a "Red Badge of Courage" button for riding the coaster.
A computerized block system is used to prevent trains from contacting each other. GASM has 5 blocks: Station, Transfer Table, Lift, Main Brake, and Ready Brake. Normal operation uses two trains; however, it can be operated with only one. During two-train operation, if the train in the station has not fully exited the loading platform, the inbound train will stop abruptly in the Main Brakes. A combination of proximity switches, mechanical switches, photoelectric sensors, and timers are all used by the controller to track train movements.
Each train consists of four cars with three rows per car, two riders per row, holding 24 total riders. Each row has a lap bar and a seat belt. The lapbar itself is locked and unlocked by an electrical current that activates solenoids on the train, resulting in a "buzzing" electrical sound. They can be troublesome, sometimes requiring the operating crew to manually unlock the lapbar for a rider. The trains ride on steel wheels with guide wheels and upstops attached. The track is plank wood stacked 7 planks high, with steel running surfaces on the top, bottom and sides (locations where the running, guide, and upstop wheels contact the track).
Before computerized control existed, operators used a lever to operate the brake system and dispatch trains. The operator near the end of the station controlled the main brakes at the end of the circuit; the operator at the front of the station operated the brakes at the station platform only and worked to dispatch trains to the lift.
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Wikipedia