"Pistons, bearings—just like all the rest."
"The generator shaft, too?"
Art nodded. "It might have gone a few more revolutions. It seemed loose when we started work, but as soon as we broke the bearings apart they seemed to fasten onto the shaft like they were alive. How do you account for that? The bearings were new; I just cast them yesterday."
"They were contaminated by dust between casting and installation in the protected room. We've got to dig a lot deeper before we've got the right answer. It might be worthwhile setting up another rig just like the one we have in order to get some more juice in our batteries. Do you think you could do it again, or even several times? That engine lasted about 90 hours, didn't it?"
"Eighty-eight, altogether. I suppose I could do it again if you think it's worth it. The trouble is getting generators. Maybe we could machine the shaft of this one and cast a new set of bearings to fit. I'll try if you think it's worth it."
"Get it ready to run," said Ken. "The battery power for our radio isn't going to last forever. We'll be in a real jam if we lose touch with the outside."
Chapter 11.
The Animals Are Sick
That night, Ken reported to his father the fate of the engine assembled by Art.
"It did seem too good to be true," said Professor Maddox. He stretched wearily in the large chair by the feeble heat of the fireplace. "It bears out our observation of the affinity of the dust for metals."