The end of World War Two saw a massive increase in the demand for heavy equipment. Top of contractors' wish lists were large, high horsepower, track type tractors and Allis-Chalmers, Caterpillar and International-Harvester duked it out for top honours. By Richard Campbell.
Allis-Chalmers made a bid in the large tractor stakes when in...
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 ways and was the foundation on which the later, highly successful model HD-21 was based. By RICHARD CAMPBELL
We first took a look at the Allis-Chalmers HD-19 back in...
When released in 1955, the Caterpillar D9D was one of the world’s largest and heaviest track type tractors, only exceeded in size by the Euclid TC-12. By Richard Campbell
Following the end of WWII and at the request of many contractors who were basically happy with their D8s but needed something larger, Caterpillar began...
