Quoted from tampa12:
My son and I play Avengers infinity pin every day and after awhile we get flipper fade because flipper coils gets hotter then weaker, so we ordered cooling kit which should help. However still want faster shots and make shots up the inverted marvel ramp easier which ball REALLY struggles every time to climb even when flipper settings are maxed out and rear feet lowered. long story short we ordered 2 of Stern's strongest flipper coils for Avengers Infinity Pin which is 1 grade higher than what is installed and want to know if anyone has experience upgrading their flipper coils. You can see in the Pic my Godzilla pinball has coil 090-5020 no diode and game shoots amazing up the invert ramp. So we want that coil installed for our Avengers pin too.
see pic, my Godzilla pin has 090-5032-ND / 22-1080 coil on left and right coil is 090-5020-20-ND / 22-900 no diode.
Avengers infinity pin has 090-5032-ND / 22-1080 for both flippers and want to upgrade both flipper coils to 090-5020-20T coils but they have a diode. is wiring the new coil the same and is coil diode going to make a difference? I know diode allows voltage in one way and not the other, so i think it's protecting the coil or circuit. can I install these coils safely with diodes or should diodes be cut?
any advice is welcomed, I also have 10+ years experience fixing tech and some experience fixing Pins and changing coils.
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With the active cooling of the Tibetan Breeze kit you ordered, you should be good to go - it will eliminate the fade. I would not recommend changing out the coils. I would instead look at optimizing your current setup to correct the coil performance:
1. Check EOS isn't triggering before flipper is at peak (use switch test and manually move flipper slowly and note when EOS triggers - adjust if it's before the flipper is at peak)
2. Check coil stop (REMOVE it and try to move the middle - visual inspection sometimes looks good when it's not)
3. Check coil sleeve for free movement.
4. Wax the playfield with a carnuba wax like P21S. Buff with lambswool pad.
5. Check that flipper switch blades at the flipper buttons are making solid contact when the button is depressed (both levels if there are 2 flippers on a side) instead of BARELY making contact which can cause the coils to flutter power and feel weak.
6. Check coil resistance with a multimeter (ohms setting) to make sure you don't have a bad or out of spec coil robbing you of power.
7. Check power settings in system menu for coils. With active cooling, you can afford to turn this up to give more power. (you did this, but for posterity's sake of other people with the same idea, adding to the checklist).
Here's a Stern coil strength chart, most to least (part, resistance in ohms, windings, wire gauge):
090-5020 3.4 900 22
090-5032 4.3 1080 22
090-5030 5.1 1100 23
090-5025 9.5 1570 24
For your vertical ramp, slo-mo it with a cell phone video and see if there's something about the ball entry that's robbing it of power.
Do this instead of changing out coils. Too-strong coils break stuff faster. Not a good idea, especially since you now have the active cooling covered to keep the performance consistent once you get it dialed in.