The "M561 GAMA-GOAT" is a dual-bodied centrally articulated six-wheeled vehicle, with all wheel drive. It is made of aluminum for light weight, and can slowly traverse calm bodies of water, as it is watertight. It was intended to carry cargo. Another variant, the M-792, was fitted as a portable field hospital. They have been available to firefighting and law enforcement agencies since 1986 through the Federal Excess Personal Property program.


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SPECIFICATIONS

  • Weight (with winch) 7710lb/3497kg
  • Payload 2900lb/1315kg
  • Length 226in/574cm
  • Width 84in/213cm
  • Height 91in/231cm
  • Fuel Capacity 40gal/151l
  • Tire Size 11-18

PHYSICAL DESCRIPTION

The outermost axles steer using coupled steering shafts between the cab and carrier.

Power is provided by a Detroit Diesel 3-53 engine, a 3 cylinder Liquid Cooled In-line two-cycle diesel, delivering a top speed of 55 MPH. Power is put to the wheels through a four speed transmission with reverse, and a high/low transfer case. The unit can be driven by just two, or by all six wheels, and uses 4 wheel steering to minimize its turning radius.

The Gama Goat has recently seen some popularity as a firefighting vehicle. The Maple Plain Fire Department of Maple Plain, Minneapolis, has one fitted with a 450 gallon tank and a small pump unit, and uses it to get to places that standard units can not reach. They enjoy more limited use as a personal off-road recreational vehicle.


References:

  1. Website: Ordnance Unlimited Collection, Gamma Goat. TPI Video Productions, 1997.(http://www.jeepjournal.com/mvd/parts/ord/ord02.htm)
  2. Website: Maple Plain Fire Department, Gamma Goat. January 12, 2000. (http://www.mapleplain.com/FireDept/Fire_Dept_Information/Vehicles/GammaGoat.html)
  3. Northeast Forest Fire Supervisors, M-561 "GAMMA GOAT": An Analysis of the Vehicle for Wildfire Use. May 1988. (http://www.roscommonequipmentcenter.com/projects/rec53a.pdf)