
The Model G is a small
implement carrier tractor that was made by the
Allis-Chalmers Manufacturing Company
Allis-Chalmers was a U.S. manufacturer of machinery for various industries. Its business lines included agricultural equipment, construction equipment, power generation and power transmission equipment, and machinery for use in industrial settin ...
. At the time of its introduction the Model G was unique for its rear-mounted,
Continental
Continental may refer to:
Places
* Continental, Arizona, a small community in Pima County, Arizona, US
* Continental, Ohio, a small town in Putnam County, US
Arts and entertainment
* ''Continental'' (album), an album by Saint Etienne
* Continen ...
N62 engine. It was a four-cylinder engine with a
bore and
stroke
Stroke is a medical condition in which poor cerebral circulation, blood flow to a part of the brain causes cell death. There are two main types of stroke: brain ischemia, ischemic, due to lack of blood flow, and intracranial hemorrhage, hemor ...
. The Model G was designed for small farms and vegetable gardeners, and a line of
implements specifically designed for it, including
plough
A plough or ( US) plow (both pronounced ) is a farm tool for loosening or turning the soil before sowing seed or planting. Ploughs were traditionally drawn by oxen and horses but modern ploughs are drawn by tractors. A plough may have a wooden ...
s,
planters, and
cultivator
A cultivator (also known as a rotavator) is a piece of agricultural machinery, agricultural equipment used for secondary tillage. One sense of the name refers to frames with ''teeth'' (also called ''shanks'') that pierce the soil as they ar ...
s. The design of the Model G allowed for a great view of the belly-mounted implements.
Details
The Model G was manufactured solely in the factory in
Gadsden, Alabama
Gadsden is the county seat of Etowah County in the U.S. state of Alabama. It is located on the Coosa River about northeast of Birmingham and southwest of Chattanooga, Tennessee. It is the primary city of the Gadsden Metropolitan Statist ...
, from 1948 to 1955. 29,976 units were built, which is less than Allis-Chalmers had originally hoped for. The Model G had a 5 gallon fuel tank, weighed 1,285 pounds, and was rated at 10
drawbar horsepower (Tested at 10.33 belt and 9.04 drawbar). The engine had a
displacement
Displacement may refer to:
Physical sciences
Mathematics and physics
*Displacement (geometry), is the difference between the final and initial position of a point trajectory (for instance, the center of mass of a moving object). The actual path ...
of 62 cubic inches and was rated at 1800
RPM
Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min, or r⋅min−1) is a unit of rotational speed (or rotational frequency) for rotating machines.
One revolution per minute is equivalent to hertz.
Standards
ISO 80000-3:2019 def ...
. The
transmission
Transmission or transmit may refer to:
Science and technology
* Power transmission
** Electric power transmission
** Transmission (mechanical device), technology that allows controlled application of power
*** Automatic transmission
*** Manual tra ...
was a non-synchronized three-speed with reverse. An additional 'creeper' forward gear was standard equipment as well.
Electric conversions
The unique design of the Model G lends itself extremely well to electric vehicle conversion; a small DC
electric motor
An electric motor is a machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a electromagnetic coil, wire winding to gene ...
replaces the original engine and bolts directly to the transmission housing through a commercially available adapter plate. A
contactor
A contactor is an electrically controlled switch used for switching an electrical power circuit. A contactor is typically controlled by a circuit which has a much lower power level than the switched circuit, such as a 24-volt coil electromagne ...
and electronic
motor controller
A motor controller is a device or group of devices that can coordinate in a predetermined manner the performance of an electric motor. A motor controller might include a manual or automatic means for starting and stopping the motor, selecting forw ...
are typically mounted to the same plate. Batteries are mounted in a box above the motor, where they are easily accessible for routine maintenance. The overall weight distribution mimics the tail-heavy design of the original tractor power train, which requires a visible nose counterweight. Over 100 Allis Chalmers model G tractors are known to have been converted as of 2009. In 2018, students from the University of Nebraska-Lincoln partnered with Tuff-bilt Tractors (based on the model G) to build an electric Tuff-bilt prototype. The original prototype "flying beet" conversion, which was partially funded by a
USDA
The United States Department of Agriculture (USDA) is an United States federal executive departments, executive department of the Federal government of the United States, United States federal government that aims to meet the needs of commerc ...
SARE grant, is still in use at the Huguenot Farms in New Paltz, NY, USA.
Other Tractors Based on the "G"
In the mid-1950s,
David Brown Ltd.
David Brown Santasalo, formerly David Brown Engineering, is a British engineering company, principally engaged in the manufacture of gears and gearboxes. Their major gear manufacturing plant is in Swan Lane, Lockwood, Huddersfield, adjacent to ...
introduced a
tractor
A tractor is an engineering vehicle specifically designed to deliver a high tractive effort (or torque) at slow speeds, for the purposes of hauling a Trailer (vehicle), trailer or machinery such as that used in agriculture, mining or constructio ...
in the UK that was based on the Allis-Chalmers G. The VAD12/V, or 2D as it was better known, used the tubular frame to act as an air receiver for the compressed air implement lifting system. The 2D never sold in large numbers and was discontinued in favor of other models.
Tuff-bilt Tractors has been producing a modern version of the Allis-Chalmers G since 2007. In 2014, Cleber, LLC in Alabama began producing a tractor based on the Allis-Chalmers G known as the Oggún. An Ohio company known as Tilmor is also working on a tractor based on the "G."
Tilmor Tractor
/ref>
References
External links
{{Allis-Chalmers
Allis-Chalmers Manufacturing Company
Tractors