(Topic ID: 331366)

ordered some coils, arrived cracked, still good to use?

By verymickey

1 year ago



Topic Stats

  • 10 posts
  • 8 Pinsiders participating
  • Latest reply 1 year ago by sparky672
  • No one calls this topic a favorite

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#1 1 year ago

Recently ordered some NOS coils and one of them arrived with the plastic base cracked (see photos - https://imgur.com/a/Hf7f6Pc )

Should i use them? will it impact longevity or performance?

thanks

#2 1 year ago

I would not use it.

Coils experience a lot of vibration. It's going to be flapping around, possibly touching other metal. It could potentially short something out. Or eventually, the wire may break off.

I haven't found a glue that works on nylon plastic, so you're out of luck there. Unless you attempt to melt it, but that just turns into an ugly mess.

#3 1 year ago
Quoted from ForceFlow:

I would not use it.
Coils experience a lot of vibration. It's going to be flapping around, possibly touching other metal. It could potentially short something out. Or eventually, the wire may break off.
I haven't found a glue that works on nylon plastic, so you're out of luck there. Unless you attempt to melt it, but that just turns into an ugly mess.

Thats a great point, without that support any movement will eventually fatigue that wire. Appreciate the quick response.

#4 1 year ago

Return it for a replacement or money back.

#5 1 year ago

It's not optimal of course.. but FWIW, I have purchased games with coils like that and they have been fine for years.. no issues..

There will be zero impact on performance. That wire gage is pretty thick already.. and you could prob dab some epoxy on it to make it look nice,... I'd use it

#6 1 year ago

I wouldn't use it in a game. Could have internal damage now or soon.

LTG : )

#7 1 year ago

I’d use it if I needed it.

It’s just a long spool of wire, not a delicate timepiece.

#8 1 year ago

This was through eBay. I requested a refund and seller didn't contest - refund currently being processed! This is just for home use so no urgency (other than the desire to get those flipper flipping again!

#9 1 year ago

Oof, that is a bummer. But the coil is probably still usable, as what I would consider a B-class part.

For a service call or other instance where reputation is on the line, I wouldn't use it. Same for a high-use location or similar game. Or a restoration.

But for a game you're close to and can monitor, or situation where you're in a pinch, you might get lucky. It is still a functional part, you just need to be smart about and keep an eye on it.

Forceflow is right in that there really isn't a good way to bond the crack at the joint. But you might try laminating both sides with some thick, high-quality packing tape, or mylar. Something to keep the part from flopping around so easily. Vibrations may indeed cause it to wear free again over time, but it could hold a long while.

I have seen and worked with coils where the lug was entirely free of the bobbin (Gottlieb coils are notorious for this) so it's not the end of the world.

If the seller is replacing it, keep this one handy for an in-a-pinch spare.

#10 1 year ago

Since you have it and might as well use it, then take some measures to mitigate issues.

• Stabilize the base somehow. Maybe epoxy a piece of stiff material to span the crack. There are also affordable machines that can weld nylon plastic with heat. Maybe you would have a need for such a tool anyway.

• Use some shrink-wrap on the connections to prevent shorts if it breaks loose.

• Secure the wires with zip ties so if something breaks free, the movement of these loose wires is limited.

IMHO, using it is somewhat risky, but I think if you look at the installation area and cover all the "what if's", you could get some good use from it.

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