Great American Scream Machine (Six Flags Over Georgia)

This article is about the wooden roller coaster at Six Flags Over Georgia. For the former steel looping roller coaster of the same name at Six Flags Great Adventure, see Great American Scream Machine (Six Flags Great Adventure).

Not to be confused with Scream Machine (ride).

Great American Scream Machine
The lift hill
Six Flags Over Georgia
Coordinates
Status	Operating
Opening date	March 31, 1973 (1973-03-31)
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
Great American Scream Machine at RCDB Pictures of Great American Scream Machine at RCDB

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.

Operational Information

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.

Awards

Golden Ticket Awards: Top wood Roller Coasters
Year	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014
Ranking	—	—	—	42 (tie)	—	—	41	—	40	44	49 (tie)	—	—	—	48	43	—

External links

• Official Six Flags Over Georgia website