0:04
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Petrol engine revs - thin, fast. (1)
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0:02
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Recipro saw - quick rev (3).
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0:02
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Recipro saw - quick rev (2).
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0:03
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Recipro saw - quick rev (1).
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0:03
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Old, heavy handrill in action - quick rev (2).
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0:10
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Old, heavy handrill in action - two long revs.
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0:07
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Old, heavy handrill in action - quick rev (1).
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1:42
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Racecar track ambience - car pass-bys, revving engines.
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1:55
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Street sweeper - bristles sweeping, slow driving.
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1:00
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Street sweeper - start up, engine sputter, rev away, sweeping.
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0:17
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Steam machine start - spinning up, hiss.
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0:05
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Pencil sharpener motor - three short whirs.
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0:19
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Pencil sharpener motor - four medium whirs.
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0:09
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Pencil sharpener motor - long whir.
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0:05
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Small servo motor - tinny whir. (5)
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0:02
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Small servo motor - tinny whir. (4)
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0:02
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Small servo motor - tinny whir. (3)
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0:03
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Small servo motor - tinny whir. (2)
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0:02
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Small servo motor - tinny whir. (1)
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0:01
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Servo motor, stressed - medium whir. (19)
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