(Topic ID: 231504)

Installing a Weaker Flipper Coil

By oldschoolbob

12 months ago

Topic Stats

  • 12 posts
  • 6 Pinsiders participating
  • Latest reply 12 months ago by oldschoolbob
  • Topic is favorited by 2 Pinsiders


Linked Games

  • Meteor Stern Electronics, 1979

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IMG_3402a (resized).jpg

#1 12 months ago

My Stern Meteor has an upper flipper. It has a 4500 turn coil. Stern found this coil was breaking drop targets so they added a 1 ohm resistor to cut the power. I'd like to eliminate the resistor and install a weaker coil because the existing setup seems to pull a lot of current.

I seem to recall I can use a 5050 turn coil. Does that sound about right?



IMG_3402a (resized).jpg
#2 12 months ago

Why do you think it pulls "a lot" of current?

I doubt the other coil will be weaker enough

#3 12 months ago

Just put a stronger spring and a rustier plunger in there and that should do it.

#4 12 months ago

That's the rustiest plunger I could find. I guess I could let it set outside all winter but I'd like to get it fixed before spring. Seriously, the photo was taken before the rebuild - New plunger, new EOS, new coil sleeve, new spring, etc. The photo was to show the resistor.

Something is causing this game to reset (usually when using the right flipper). I was thinking something was causing a current drain and making it reset. I've replaced the lower coil and the diodes.

If the 5050 coil isn't weak enough, what would you suggest?



#5 12 months ago

The 5050 coil is only a weaker hold, same flip power. You would want something like a 26-600. You could also just gap the EOS switch wider so the power stroke is shorter.

#6 12 months ago
Quoted from dothedoo:

The 5050 coil is only a weaker hold, same flip power. You would want something like a 26-600. You could also just gap the EOS switch wider so the power stroke is shorter.

I agree just gap it wider that's all you need to do (and get rid of the resistor, you don't need it)

You can make the gap ridiculously huge, too, as long as it holds at the end and doesn't chatter.

#7 12 months ago

Thanks guys. I'll try opening the gap. If that don't fix it I'll look for a 26-600.



#8 12 months ago

Either way, having that resistor there shouldn't cause an issue. Every other meteor works fine. If you've replaced all the right flipper diodes then it sounds like you need either some new connectors or a rebuild 5V regulator

#9 12 months ago

For what it is worth, this is what I did to one of my EM games when I rebuilt my flippers. My upper flippers on Air Aces were way too strong after the rebuild. I wired the hold winding in series with the main winding. It provides enough resistance to reduce the strength of the power stroke and allows it to hold like normal. I could have experimented with other coils, but this provided what I thought was a good solution with perfect power and function.

Not sure how this would work on your machine with DC coils.

#10 12 months ago

I just replaced the right flipper diodes. The connectors were all replaced about a year ago. It had a Rottendog driver board (that would reset also). I am now using a Bally driver board with rebuilt 5 volt section.

The problem is it don't reset all the time - twice in the last month. Hopefully the new flipper diodes fix the problem. If they don't I'm out of ideas.



#11 12 months ago
Quoted from oldschoolbob:

I just replaced the right flipper diodes

Both right flippers or just lower?

#12 12 months ago

I replaced the coil (with diodes) on the lower flipper . I replaced just the diodes on the upper flipper.

I adjusted the EOS switch on the upper flipper. The flipper barely moves when the switch opens now. But the upper flipper is almost useless now. I got to readjust my readjust.

And people wonder why I hate flippers.


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