Make a replacement 1970s chime bar from aluminum stock

Steps

• Use 1.5" wide, 1/8" thick aluminum bar.
• For Williams, cut bars to 5 3/4", 6 7/8" and 7 3/8"; drill a pair of 3/8" holes spaced 3 1/2" centre to centre.
• Bally lengths differ by game, typically 4 7/8", 5 3/8", 6" or 6 7/8"; drill a pair of 1/2" holes spaced 3 1/8" centre to centre.
• The short bars (10 and 100 point tones) are the ones most often damaged.
• Fit 1/4" ID rubber plumbing washers under the bar so the chime does not sound tinny.

Systems

• Electro-mechanical

Related tips

• 1970s Williams chime bars come loose or sound harsh
• Bally C0- coil numbers and their replacements
• Old Bally E-184 coil numbers and their replacements
• Modern replacement coils differ slightly from originals

Source: Repairing Electro-Mechanical (EM) Coin Operated Games to 1978, Part One, Clay Harrell (pinrepair.com)