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Chariots of Fire

1932 Mack AP

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A scratch built 1932 Mack AP used in constructing Boulder Dam.  Chassis is a stretched AC frame and modified wheels for hard rubber in the rear and pneumatic tires in front.  The radiator was stretched also.  Body is constructed of sheet plastic stock.  Chains and sprockets at the rear wheels are from MicroMark.  

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Wonderful re-creation ! Amazing that it is an open cab with the size of that dump body and the mass of rock it must have hauled day in day out. 

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It's hot on the Nevada/Arizona border where the dam was built.  Open cab and lots of air around the engine was the only way to go.  They extended the cab protection after the first batch of AP's were delivered.  The bodies were steel and carried 16 cubic yards as I recall.  Later on they changed to aluminum bodies which meant they could carry heavier loads.

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