Category : Tractors

Classic Machines Tractors

The Allis-Chalmers HD-20, last of A-C’s GM-powered Crawlers

Contractor Magazine
A big tractor in its day, The Allis-Chalmers HD-20 was another part of the power struggle that took place between Allis-Chalmers and International-Harvester during the
Classic Machines Tractors

Featured Classic Machines: The Terex 82-20 crawler tractor

Charles Fairbairn
Smallest of all the production Terex track type tractors, the 82-20 was designed to expand Terex’s market share of the crawler tractor business and take
Classic Machines Tractors

Classic Machines: The Allis-Chalmers HD-19 revisited

Charles Fairbairn
Allis-Chalmers led the charge for a bigger, higher horsepower track type tractor following World War Two. The resulting model HD-19 was a breakthrough in many
Classic Machines Tractors

Classic Machines: Caterpillar’s D7 tractor -‘the early years’

Charles Fairbairn
The iconic Caterpillar D7 has been in continuous production in various versions since 1935. They have fought in three major conflicts – WWII, Korea &
Classic Machines Tractors

Classic Machines: The Allis-Chalmers HD-6 tractor

Charles Fairbairn
For a period of just under 20 years (1955-1974), Allis-Chalmers produced one of the most popular small track type tractors ever built, the model HD-6.
Classic Machines Tractors

Classic Machines: The International-Harvester TD20 & TD20B tractors

Charles Fairbairn
By the end of the 1950s, International’s “jack of all trades” TD-18 was getting beyond further economical development. The TD-20 was the result. By Richard
Classic Machines Tractors

Classic Machines: The Allis-Chalmers HD-11 tractor

Charles Fairbairn
Designed as a replacement for an earlier tractor, the Allis-Chalmers HD-11 was a very worthy successor and was in production for over 25 years.  By
Classic Machines Tractors

Classic Machines: The early Caterpillar D6 tractors – long-term survivors

Charles Fairbairn
For over 80 years, the Caterpillar D6 has been the backbone of the medium size Cat track type tractor range. Here is an overview of
Classic Machines Tractors

Classic Machines: The Vickers VR180 tractor

Charles Fairbairn
As a result of their experience manufacturing tanks during WWII, Vickers-Armstrong of Newcastle, England decided to build a track-type tractor to take on the Americans.  
Classic Machines Tractors

Classic Machines: The Allis-Chalmers HD-16 tractor

Charles Fairbairn
Replacing the previous model HD-15 in the Allis-Chalmers line of track type tractors the HD-16 was introduced with much fanfare in 1955.   By Richard Campbell