Have a fully restored Xenon That I’e done everything imaginable to make it like new. One thing that still bugs me is flipper strength. It seems like as time went on comparing age of machines flipper strengths have increased. My Bally Truck Stop seems to have slighter stronger flippers, and my Ghostbusters pro seems to have even more flipper strength.

Xenon had new flipper coils, stops, sleeves, and End of stroke switches, coil sleeves. Adjusted the switches so they dont open until just the very end of fill flipper stroke. 6.5 degree playfield angle measured on the playfield not the cabinet. Cabinet switches are clean also. They still seem like they are missing something compared to the other machines. Just feel like they need a bit more.

Recommendation for a coil with a bit more power upgrade?
Or just accept it and leave it alone? I think i saw a table depicting various coil strength someplace but until I stumble into it again... You thoughts?

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Hmm, yes I can do all that... just seems like it needs a bit more compared to my other machines. It’s not the ability to make those shots, albeit not always. Like a ramp shot that doesn’t make it all the way and rolls back down.
But compared too other machines the flippers are not as strong. Is this the way technology and flipper power progressed overtime?

Yes the installed coils are the aq-25-500/34-4500.

Never heard of this. Extension vs compression springs?

Mine are not linear flippers

Deleted response.

Going to try both of these... the second one is also used in truck stop so if nothing else It goes into my spare parts organizer box for truck stop.

Do the linear feel stronger?

Boards and connectors are new.

The Pursuit Of Perfection

This is exactly what I’ve been trying to do on this... Well Said!

Thank you. Those were exactly what I had seen before. Now I have the reference I need. Way to go!

Surprised at all the interest in this... When I asked the original question I had no idea that others would be so interested in this also. glad I could finally give back here on pinside.

Just installed the Stern j-25-475/34-4500 coils without the spring washer. No tangible difference.

I wonder... My Big Betty’s Truck Stop has oem Williams for the lower flippers and Bally linear flippers for the uppers. Wondering if I can take one of my spare Williams setups and install it if voltages are the same. Gotta go do some reading. But since I want it to work like the Williams setup might as well try to see if I can put the Williams stuff into it.

Based on what I think I understand here: I should have seen a difference. The solenoid driver board I upgraded to altek. The original rectifier and power transformer are still in the unit. Perhaps I need to get out my meter and do some testing to be sure I have true 43v. Unfortunately my idea above about swapping in williams units may be a problem as they require 50v.

I do not have linear flippers in this.

Can anyone that did this tell me if they saw a big difference or was it subtle when they went to the stern coils like I just tried?

One way or another I'm going to make this work...

When I bought this machine it had some hacked up wiring in the gi and feature lighting circuits, they were tied together! So I have to wonder.

There is one extra brown wire on the left solenoid than the right. Anyone have photos showing wiring to the coils I can compare to.

I installed the stern coils recommended earlier in this thread. One failed and started popping the f4 fuse after a bit of use. Put the old coil back in on that side. the other stern remains.I do not see a difference between the two part numbers

I will have to try these since one of the Stern pair I swapped in failed after showing no improvement. Actually already bought them. Thanks for testing!

Just installed the 24-570/34-3600 coils. Testing them and 3 times the right flipper made the tube shot. Dont think I ever saw that with any of the coils I tried. As far as I am concerned if you want stronger flippers and you have done everything else possible these coils are the ones to use.