Free Play Rig

saturnkk

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Some time back, there was a poster here who had a gizmo for sale that would allow credits when you push the quarter return on your arcade game. I need to adapt my RBI Baseball, Atari Football, and Elway Football for free play and I think this might be the only way to do it...

Does anyone know this poster? Has anyone here used this method and if so, does it work well?


Thanks!
 
IIRC you still had to push P1 and P2 start to coin it up. Just rig a momentary (NO) switch somewhere in the coin door.
 
You can buy a tiny SPST momentary switch at Radio Shack and drill a hole for it in the back of the coin return slot. Place it so the coin door hits it when you push it in. That way, if you ever want to bring it back into normal service it's an easy fix.

Like this one: http://www.radioshack.com/product/index.jsp?productId=2062508
 
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What about Atari football where there is no 1 player or 2 player button? You drop quarters and time is added? I assume that for RBI Baseball and Jon Elway football the one circuit gizmo will work?
 
At the Louisville Arcade Expo, they gave us these wooden blocks with leaf switches that slid into the coin mech slot. It had aligator clips that cliped onto the coin-up cables. When you pushed on the coin-return it coined up the game. It probably cost them a few dollars to make each one. I'll take a pic and send you measurements when I get home from work.
 
Quarters drop through the mech and activate a switch. Switches connect two wires momentarily.

There is nothing magical about a quarter. If a quarter can do it, so can a switch.
 
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