Still Relay

Notes from a small workshop: pinball machines, old score motors, and the patience they demand.

A 1974 Gottlieb score motor that finally turns

Three weekends of cleaning commutators with a fiberglass pen, and the score motor on the bench finally spins without sticking at the reset cam. The trick, as always with these, was not lubrication — it was removing forty years of the wrong lubricant.

The relay banks come next. I label every wire with masking tape and a pencil before touching anything; the schematics exist, but paper from 1974 forgives you nothing.

Why I keep a still room for loud machines

Neighbours, mostly. A solenoid at midnight is a friendship-ending sound. The garage is now insulated enough that the drop-target reset is a distant click, and I can work on a machine for an hour after the house goes quiet.

Notes on matching rubber rings

Everyone buys the kit. Half the kit is the wrong durometer for the flippers on early solid-states. I keep a jar of singles sorted by diameter and stiffness, and I have stopped pretending the jar is organised.

About

I restore electromechanical pinball machines in a small workshop in the Pacific Northwest. This site is a notebook: what worked, what didn't, and what I'd do differently. If you're working on a similar machine, write to [email protected] — I answer slowly but I answer.