The left flipper on the Little Chief I recently got to work has always been weaker than the right flipper. Not only does it have less power when sending the ball up the playfield, but also "gives" when trying to catch the ball. The right flipper has neither of these issues.

What I have done so far is replace the bushings, springs, and plunger/links. I have also checked and corrected the gap on the EOS switches. What I had not done until tonight was check the coils themselves. Each flipper has a different coil.

The right flipper (which works as expected) has the correct coil for this game, FL20-300/28-400. The left flipper has a different coil, FL21-375/28-400. From what I have read online, the secondary windings are the same (28-400) but the primary windings are not. Which coil is stronger? And could the difference in coils explain why the left flipper does not work as well?

Thanks!

Adding the correct coil and some new sleeves to my PBR order! Thank you for all the help!

I do need to find the formula for calculating the resistance of the coil/magnetic field strength for times like this.