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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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#3 2 years ago
Quoted from jibmums:

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.

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

#6 2 years ago
Quoted from jibmums:

VUK has already been rebuilt with all new components from PBR.

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.

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?

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

#10 2 years ago
Quoted from GRUMPY:

Not always true, more turns = more resistance, less current, weaker coil. For example your flipper coil has 2 windings. One high power and one low power. Which coil has more turns? The high power on a Williams flipper coil has 600 turns and the low power has 2600 turns.

Yes it would and it is available for sale if you do not want to mess with unwrapping your coil.

Read post 15
https://pinside.com/pinball/forum/topic/increasing-the-power-to-a-coil-remove-more-windings

In general, more windings = more force. Removing a few windings may help a little, then it makes it worse as you remove more

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