The Mark 71's Electrical System

Miao Xin set her phone to reject all calls, then followed the navigation directions to the warehouse of a company that imported and exported electromechanical equipment. After searching for a while, she had no trouble finding an American-standard 1,000-kilowatt generator set with a rated output voltage of 480

volts and a frequency of 60 hertz.

Of course, the generator set was powered by a diesel engine, and Su Ming summoned only the generator itself to the other world.

But that was only part of the job. The generator had to be connected to the Curtis steam engine, which brought up the question of gear ratios. The generator's required speed and torque did not match the steam engine's output.

In this case, for example, the generator needed 3,600 revolutions per minute, while the steam engine only managed 100 to 200.

Torque could be adjusted through the steam engine's valves and operating pressure, but changing the speed required a gearbox.

Fortunately, gearboxes were within Su Ming's area of expertise. As a mechatronics engineering major, this was right up his alley.

He dismantled the gearbox connecting the Curtis steam engine to the drive shaft in the original power unit and thoroughly modified it. He lacked suitable gears and couplings, so he drew up detailed plans and placed an order with a local parts factory.

The parts would have taken three or four days because the manufacturing capabilities in Vietnam fell short, so the owner had a counterpart back in China make them and send them by courier. But Beianqi actually made them by hand with alchemy magic, using nothing more than a few simple tools.

Although the hand-made parts were far less precise and full of flaws, they would serve for testing until the proper parts arrived.

This made Su Ming see her