(Topic ID: 60956)

Gottlieb 17875 to 20095 flipper upgrade?


By Vannos

6 years ago



Topic Stats

  • 9 posts
  • 4 Pinsiders participating
  • Latest reply 6 years ago by Vannos
  • Topic is favorited by 2 Pinsiders

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#1 6 years ago

I was wondering if anyone has put Gottlieb 20095 flipper coils in place of 17875 flipper coils? I find the 17875 coils too weak on some of my games (Spider-Man, Genie.) My Hulk plays ok with the 17875s.

Later sys 80 games like my Black Hole has these coils (they are factory) and it plays awesome.

Any thoughts would be great! Thanks!

#2 6 years ago

I find that rebuilding the flipper assemblies work fine but swapping to stronger coils works too if needed. I would probably not do this swap on any flipper coils that are in close proximity to drop targets though.

Steve

#3 6 years ago
Quoted from blownfuse:

I find that rebuilding the flipper assemblies work fine but swapping to stronger coils works too if needed. I would probably not do this swap on any flipper coils that are in close proximity to drop targets though.
Steve

Is this because of heat or because of the physical size?

#4 6 years ago

The yellow and red Gottlieb flipper coils are interchangeable, physical size is almost the same between the two. Wire gauge and amounts of windings determine strength and hold inside the coil. Heat has nothing to do with coil strength per say but can weaken or damage a coil due to extra resistance as it overheats. If a flipper coil is getting hot, something else is usually contributing to it.

The problem I see is that the red coil is a lot stronger and can break parts like drop targets or plastic sets that are too close. If you look at most manuals, Gottlieb didn't use red coils near drop targets already because of this. If anyone choses to go to a stronger flipper coil, they do it at their own risk since some plastic parts can't be easily replaced. I'd rather rebuild a flipper assembly than replace hard to find parts.

Another trick to get more power out of the flippers and kickers on some of the System 80 games is to add another 10,000 mfd 40VDC capacitor to the 24VDC bridge rectifier. I don't advise this for long term but it's fun to see how strong one change will make the game. Some system 80 games that split the controlled (24VDC) and uncontrolled coils already have this cap installed (38VDC) from the factory (HH comes to mind here).

Steve

System 80, not just a job, it's an adventure

Quoted from Muppet_Man:

Is this because of heat or because of the physical size?

#5 6 years ago

Very helpful blownfuse. I always get confused which Gottlieb is which system. Is there a list somewhere?

#7 6 years ago
Quoted from blownfuse:

This is a little easier.
Steve

Now that is what I call super handy.

Thanks for that.

#8 6 years ago
Quoted from Vannos:

I was wondering if anyone has put Gottlieb 20095 flipper coils in place of 17875 flipper coils? I find the 17875 coils too weak on some of my games (Spider-Man, Genie.) My Hulk plays ok with the 17875s.
Later sys 80 games like my Black Hole has these coils (they are factory) and it plays awesome.
Any thoughts would be great! Thanks!

Interesting. Yeah I had an HH, sys80, & its flippers had a good amount of pop. Then my Bone Busters, sys80B but with modern style flippers also has plenty of strength. It does seem like system 1 got the shaft from the ones I've played as well. Not as much snap on those. Although I never played any of those games new, so IDK maybe the flippers do just really need rebuilt after X amount of years. If that doesn't work then I'd bump up to a stronger coil. Or is it possible your slope is too high?

#9 6 years ago

I find that on Genie (sys 1) and Spider-Man (sys 80) that the yellow coils aren't strong enough to make a lot of shots you feel like you should be able to. Heck, you cant even reach the top of the playfield.

Maybe its a perception thing because both games are wide body.

Regardless, thanks for the info everyone! I'll have to evaluate if any plastic is too close and at risk of breaking.

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