Leave Williams EM flipper strength alone
Williams EMs, especially those with DC-powered features, already have strong flippers; upgrading their coils isn't advised.
Systems
Related tips
- Gottlieb and post-1962 Williams EM flipper coil strengths (30 V)
- Rebuilding an EM flipper
- An EM flipper coil is two windings
- How an EM flipper coil and its EOS switch work
- Gottlieb EM flipper rebuild parts
- Replace metal flipper links with bakelite
- Giving EM flippers a bit more travel
- How 1940s-1950s flippers differ
Source: Repairing Electro-Mechanical (EM) Coin Operated Games to 1978, Part Two, Clay Harrell (pinrepair.com)