(quoted from post at 02:39:12 02/05/19) Back when Mack was a truck worth having. Since then they have gone down hill terribly. The CH series weren't worth pushing to the junkyard. To many poor design features in them. Alternator down behind the frame rail. Wiper plastic tank over the turbo to melt in hot weather Poor wiring /grounding in wiring. Just a poor truck from the get go.
(quoted from post at 08:46:04 02/05/19) found this old girl not far from me pretty bad shape otherwise I might have recued her
<img src="https://www.yesterdaystractors.com/cvphotos/cvphoto11943.jpg">
(quoted from post at 11:11:46 02/05/19) were these good?
<img src="https://www.yesterdaystractors.com/cvphotos/cvphoto11958.jpg">
<img src="https://www.yesterdaystractors.com/cvphotos/cvphoto11959.jpg">
<img src="https://www.yesterdaystractors.com/cvphotos/cvphoto11960.jpg">
(quoted from post at 08:05:04 02/05/19) Out of curiosity I did a quick search to find out about the trucks in the photos you posted.
Found the following on Truckersnews;
Eleven monster Macks equipped with 600 hp diesel engines, 5-foot-tall tires and 5,500-gallon fuel tanks carried the personnel and equipment to inside the Arctic Circle to construct the DEW Line defense project in 1956.
The beastly bulldogs were shipped by rail from Allentown, Pennsylvania to Seattle. From there they were loaded on barges and taken to Valdez, Alaska. They had conventional highway travel and then 500 miles over wilderness trails cut by bulldozers. Then came 500 miles over the frozen Arctic Ocean.
Temperatures were as low as -65 degrees as truckers drove in 12-hour shifts and then slept, ate and relaxed in 65-foot-long trailers.
The Dew Line was a series of radar stations meant to warn North America of potential attack from bombers of the former U.S.S.R. during the Cold War.
There is also a video showing these trucks in action, yes they get stuck too.
(quoted from post at 13:05:24 02/05/19)
(quoted from post at 13:14:03 02/05/19) they are all mack, these units were specially designed and built for arctic exploration, i think there were 12 of them they were pre alcan hiway rigs,
(quoted from post at 08:54:26 02/05/19)(quoted from post at 13:14:03 02/05/19) they are all mack, these units were specially designed and built for arctic exploration, i think there were 12 of them they were pre alcan hiway rigs,
The only one I'm questioning is the blue truck posted by grizz02.
(quoted from post at 15:06:23 02/05/19)(quoted from post at 08:54:26 02/05/19)(quoted from post at 13:14:03 02/05/19) they are all mack, these units were specially designed and built for arctic exploration, i think there were 12 of them they were pre alcan hiway rigs,
The only one I'm questioning is the blue truck posted by grizz02.
Fortunately for Grizz, he never said that was a Mack. In any case, it IS an older truck! *lol*
(quoted from post at 10:01:30 02/05/19) Thermodyne was the terminology for non-turbocharged Mack diesel engines. Maxidyne was the turbocharged engines. I learned to drive truck on a B-61. The cab was small, so the visibility was not very good. The worst part about the '61's was the transmission. Trplex or Quadraplex twin stick jobs. I did not like those. The B-75 introduced the 250 horsepower turbocharged 6-cylinder Maxidyne diesel with the Maxitorque five-speed gearbox, in 1966. Lots easier to drive, but still a pretty slow truck. I personally preferred the R models. Lots bigger cab with more glass and better visibility. They also had a tilt hood, making it easier to work on the engine. The engine in a B-model laid at a slant with the stuff you worked on most on the bottom. The B-models were easier to make look really sharp than the R-model. The B-75 is the nicest looking Mack ever built, in my opinion. You were either a Mack driver or you hated them. If you drove a Detroit or a Cummins with a 13-speed gearbox, you probably did not want to drive a five-or-six-speed Mack. I had a '78 R-model with the 375 V-8 that would pull like a bull to 74 mph. The limit to that truck was the pyrometer. I had a trucking buddy who put a Cummins 335 into an old B-61. That was quite the truck.
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