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Specifically 1967 Bally Surfers. Anyone have an idea why Bally used a flipper coil on the bumpers with two EOS switches?
50 volt game, power winding is 3.8 ohms, hold winding 31.3 ohms. Is this purely to avoid burning up the coil should a bumper lock on for some reason?
Quoted from pinballdaveh:If 1 of the end of stroke switches is a normally open it might power the 3rd flipper.
The third flipper is powered by the right flipper button. Totally separate circuit from the bumpers. All of the switches are NC
Quoted from pinballdaveh:Oops I thought you were talking about flippers. The schematic shows 2 part coils for the thumper bumpers with 1 normally closed end of stroke switch. The 2nd normally closed switch probably opens the thumper bumper relay hold circuit.
Yep. But why do this? Why a flipper coil on a bumper? Plus they did this on mushroom bumper relays too.
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Kansas City, MO