Just a bit of info for you in the realm of electric driven equipment. Back in the 60's and 70's Letourno has scrapers that were electrically driven. They pretty much outran the technology and the mechanics hated them so they didn't last very long. Even so, in the realm of the more specialized equipment, the largesr mining haul trucks, and by that I mean those that routinely haul in the 400 ton plus range are electrically driven, and have been for many years. Like most locomotives the engine drives a generator that in turn drives the traction motors at each drive wheel. The latest thing I know of in the electric drive, at least for a complete machine, is CAT's new D7. It also has an engine driving a generator that in turn drives a traction motor coupled to each track. The majority of the rest of the machine is also electrically driven from the engine cooling fan to the HVAC system for the cab. Taking thigs even further mfgs like Komatsu now have hybrid machines that use regenerative braking, etc to supply power to electric motors to assist in with swinging the machine.
In other words electrically driven equipment has been around for a long time. Wether it lasts in the smaller equipment or not is yet to be seen as it presents alot of technological as well as training issues that have to be overcome when it comes to troubleshooting them -vs- a normal hydraulic or mechanically driven machine. Still in the larger, specialized equipment it has been and will ocntinue to be around for a long time because there is simply no other drive system as efficient as diesel electric.
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Today's Featured Article - Tuning Up Your Tractor: The Battery - by Curtis Von Fange. Buried somewhere beneath the sheetmetal, under the gas tank, or stuffed in front of the radiator is the battery. This elusive and neglected component of the tractor is the hardest to get to when it is dead and in need of a jump. But usually, the storage battery is a storehouse of electrical energy waiting to be released a the flick of a switch. A few maintenance tips and periodic cleaning will keep it charged for the duration of its life span. The battery is made up of a number of lead bas
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