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Description: Speedway, Chicago Coin, 9/69, electronic sounds (small amplifier and mechanical devices that produce sound). Also made as CCM Mark III (though I don't know if there were any differences between Speedway and MarkIII). Speedway is essentially the same exact game as CCM Motorcycle (10/70, the first variant), but with a race car theme versus a motorcycle theme. Similar to Kasco's Indy 500 (1969) and CCM's Drive Master (1969) and Sega's Grand Prix.
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This picture by 59redvette.
This picture by 59redvette.
This picture by 59redvette.
Here's the bottom panel of Speedway. Notice the box on the
left side of the panel. This has a sensor which reads the
large black motor in the center. The motor is DC, and changes
speed as the driver's car goes faster. The box reads this
speed and makes electronic sound based on the speed of the motor.
Compare this to the electronics uses to do the same thing in the 1974 CCM
Motorcycle.
the "Mark III" version of Speedway (I'm not sure what is different, if anything):
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