You can turn a regular AC coil A-5141 into a 'hot' coil by converting it to DC. (if done properly)

My experience is described in post #9 of this thread:
https://pinside.com/pinball/forum/topic/wild-life-or-jungle-resto-and-mods

For that pin it made the 3" flippers supply just the right amount of power.

Your mileage may vary, but for me it did exactly what I was looking for.

Bud

In post #12 of that thread I show the LOWER power consumed with the DC flipper coils. (power split between resistor and coils)

You can hold the flipper on for as long as you like and it will NOT overheat.

Hold the flipper on a normal AC powered A-5141 and see how hot it gets !

Bud

I should say the hold+main coil power is reduced, but the total power is more. (resistor 17W + coils 15W = 32W)

The normal AC hold+main coil would be dissipating about 18W. (AC impedance is always tricky)

So, with DC circuit the total power goes up, but coil power goes down. (with DC the hold power of flipper still goes way up)

For DC you have to put the resistor in there or the DC power dissipated by the coil would be: 24vDC squared / 9 Ohms = 64W !

Would really be smoking hot !

I just like this way to get better flipper action because I have resistors and bridge rectifiers laying around. (but if you don't they are cheap)

Bud

This is the circuit I used to make my regular A-5141 coils with 3 inch flippers work like modern flippers.

You can control the flipper kick by simply adjusting the EOS switch.

No need to replace or tweak all those mechanics and coils to get some Gottlieb 'flipper satisfaction'.

Bud

Gottlieb Flipper DC flippers (resized).JPG