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(Topic ID: 211094)

Need to replace DE VUK coil with stronger coil


By jibmums

2 years ago



Topic Stats

  • 12 posts
  • 5 Pinsiders participating
  • Latest reply 2 years ago by GRUMPY
  • Topic is favorited by 1 Pinsider

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VUK kit (resized).jpg
090-5001-00 (resized).jpg

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#1 2 years ago

I have a DE Simpsons and the right rear green habitrail VUK is working fine, but could use a bit more "oomph" in kicking the ball out. Currently I'd say half of the time the balls come back down and hit the edge of the lock hole, which is beating the shit out of the graphics at the edge of it. I've swapped coils with the other VUK, I've moved around the habitrail and VUK bracket to try to align them better, nothing else works, so I'd like to swap in the next-strongest coil. The current one is 090-5001-00, any idea what the next-strongest one would be? I have some Bally and Williams coils too, if any are compatible.

BTW, photo below is old, VUK was rebuilt with a kit from PBR.

090-5001-00 (resized).jpg

#5 2 years ago
Quoted from zacaj:

Replace that rusty plunger and the sleeve

VUK has already been rebuilt with all new components from PBR. Photo is a "before" pic.

Quoted from PinballTilt:

I had this issue on Jurassic park. The thread I found had people suggesting a rebuild of all the components. Also, double check whether the switch is fully activating. The coil was no any ones issue and I doubt it is yours

Switch works just fine. I don't think the coil is the problem either, but replacing with a stronger one seems like the simplest solution.

Quoted from GRUMPY:

Take the wrapper off an remove 1 or 2 layers of wire and retest.

I was considering that. I've never understood the "remove wire to make coil stronger" thing though, it seems counterintuitive. Care to explain? If I had a 23-700 coil (with diode), that would be stronger than the 23-800 in the photo, correct?

#7 2 years ago
Quoted from PinballTilt:

More turns means a stronger electromagnet, we went through this recently in the lotr owners thread. So I think he's mistaken, removing windings will not increase the strength.
What components did you replace? If it was just the sleeve and plunger, that's not enough. I'll find the thread, but it was suggested to replace everything including the cup and switch. Some retailer was selling a data east rebuild kit. Need a punch for the roll pin.
Edit - here's the thread
https://pinside.com/pinball/forum/topic/tftc-vuk-issue

Everything was replaced with this kit from Pinball Resource. Additionally, I replaced the coil sleeve and cleaned up the rest of the assembly, it's as "like new" as it's gonna get. I think the problem is just that between the VUK, the hole in the playfield the cap fits in, and the green habitrail, I just can't gets things perfectly aligned, no matter what I try.....and I've tried. I think a slightly stronger coil is the easiest solution, I just can't glean the strength from the part numbers.

VUK kit (resized).jpg

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