1959 Land Rover Series II long wheelbase pickup |
Even though the diesel engine had been developed in the 1890's, the early 20th century became a battleground between gasoline powered engines and electric. In fact, electric cars were so popular that half of all automobiles were electric. The problem they had, however, was two-fold. They were not reliable, and there was a limit to how far you could drive on one charge, which was about 17 miles. A trip from New York to Boston would indeed be a problem. How many charging stations were there between home and any out of town destination?
Gasoline-powered cars weren't exactly safe either, though. If you've ever see old films from the beginning of the 20th century, you may recall seeing hand-cranks to start the car. More than a few car owners were crushed inside their garages when they cranked it, got it started and it lurched forward. The electric starter was a most welcome invention indeed. An oil boom made gasoline cheap and the path ahead became clear and easy.
All these thoughts came to mind as I was reading the introduction to Jim Allen's 2019 Diesel World article "A Chronology of Vintage Diesel Light Trucks in America." His intro to the history of diesel light trucks begins with an important fact about diesel engines. In the beginning these beasts were massive. Allen writes, "In the early days of diesel engines, downsizing them was a huge challenge. Given enough capital, engineers can work through almost any technical challenge. But investors was a return on investment so there needs to be market incentive."
In short, the pace of development was dictated by market demand and the incentives weren't there. By the 1930s they could be fit into big trucks, some watercraft and other applications. Then the war came along, accelerating many new developments. After the war diesel engines were downsized enough to where a light truck market could development, but there were still further technical kinks to work out.
The first issue was the problem of batteries. In frigid weather it took a lot of batteries to cold start a diesel engine. This mean that even though the engines were smaller, there still wasn't room in the engine compartment for those extra batteries. Starting a diesel engine wasn't so easy to begin with, and the public wasn't ready to embrace it. And initially, they didn't have the power we have all come to appreciate today. A V-8 under the hood could run circles around those 1950s diesels.
Then there was that other hurdle to get over. The infrastructure for diesel fueling was not yet in place either. That's one of the factors that killed the enthusiasm for electric cars in the first decade of the century, and diesel owners faced the same dilemma. Early direct injection Mercedes-Benz OM 352
By the 1970s, Allen write, the U.S. diesel market was at least 20 years behind where our European counterparts were. And then the 1973 gas crunch his. Suddenly, diesels began getting some respect for their fuel economy benefits. Until that time, light duty diesel trucks were something only nerdy people appreciated. Afterwards, the perception was that these people had been quite forward looking. And once infrastructure development was in place, it was possible to have a serious diesel car and truck market.
Not every move toward diesel went smoothly though. Oldsmobile's diesel cars were not a high water mark for the Oldsmobile brand. Allen calls that effort part of Olds' "Days of Infamy." Fiasco, disaster and a few other words come to mind, with much weeping and gnashing of teeth.
But the diesel light truck market came through alright, even if U.S. diesel cars never fully realized their potential.
Against this backdrop, Diesel World presents an overview of the various vintage diesel trucks that were part of our history. It's a little like researching one's genealogy. With the exception of a few "oddballs" they've dug out all the important contributions that were made through the decades.
Part one of that story can be found here:
https://www.dieselworldmag.com/diesel-trucks/vintage-diesel-light-trucks-part-one/
Diesel engines may be designed as either two-stroke or four-stroke cycles. They were originally used as a more efficient replacement for stationary steam engines. Since the 1910s, they have been used in submarines and ships. Use in locomotives, trucks, heavy equipment and electricity generation plants followed later.
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