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Metal Fatigue
Topic Started: Dec 7 2017, 04:52 PM (785 Views)
Z28HO
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Appears there is no discrimination between brands. At least all the plastic parts are unaffected, guess thatís a good thing about the plastic cars.
There isnít a way to tell which will and which wonít that I have found as with the HW where one did and one didnít and the RC, one color (only the gold/white) did and the other colors didnít.
I save the parts except any of the metal parts just in case it is contagious, donít have any signs saying it is but why take the chance. I havenít seen any new models showing signs yet. Most of mine have been from early 2000s releases.
This problem was around many years, model railroaders have cast kits from in the Ď40s and í50s, open a box and it would just be dust inside.

Posted Image
RC Ď97 Mustang


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RC Dogdge Ram 1500
I have many of these in different colors, had 5 of the gold/white color combo, all 5 got it, none of the other colors have been affected.



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HW 100% Ď38 Ford COE
One is disintegrating and one is still good.



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Ertl Am.Muscle
Ď58 Impala
Edited by Z28HO, Dec 7 2017, 04:54 PM.
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pjedsel
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Pony Car
Plastic products from the '50's can be subject to warping which in turn would lead to cracks forming in the body. One of my '58 Edsel promo models has damage to the trunk area -warped and a large crack in the trunk.
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Z28HO
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Plastic can be heated, reworked and glued. Sometimes it takes a lot of work but can be done.
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Z28HO
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Plastic can be heated, reworked and glued. Sometimes it takes a lot of work but can be done.
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Milton Fox Racing
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Z28HO
Dec 7 2017, 10:14 PM
Plastic can be heated, reworked and glued. Sometimes it takes a lot of work but can be done.


Z28HO
Dec 7 2017, 10:14 PM
Plastic can be heated, reworked and glued. Sometimes it takes a lot of work but can be done.
It always seems like twice as much (or more) work though.

:petkitty:
Edited by Milton Fox Racing, Dec 7 2017, 10:33 PM.
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Milton Fox Racing
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:unlucky: Taz isnt taking this one to well!

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Edited by Milton Fox Racing, Dec 7 2017, 10:40 PM.
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Swifty
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The Mustang II is a Mustang too!
Ouch! I always hate seeing crumblers. :( Poor cars!

On a side note, 426maxwedgie & I are looking for crumblers for a project we're working on. They need to still be intact, but with signs of imminent cracking. So if anyone has some and wants to get rid of them, let one of us know. The Mustang and Ram seen above would be good candidates... if they survive shipping.

Of note, when sending a crumbler, always ship ground. I've heard many people complain about getting a Mini Dinky that looked pristine mailed to them and when it arrived, it was dust. While I have no way of testing this theory, I suspect it has something to do with being so high in the sky. Either the atmospheric changes, or perhaps just extreme temperature changes.
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pjedsel
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Swifty
Dec 7 2017, 10:43 PM
Ouch! I always hate seeing crumblers. :( Poor cars!

On a side note, 426maxwedgie & I are looking for crumblers for a project we're working on. They need to still be intact, but with signs of imminent cracking. So if anyone has some and wants to get rid of them, let one of us know. The Mustang and Ram seen above would be good candidates... if they survive shipping.

Of note, when sending a crumbler, always ship ground. I've heard many people complain about getting a Mini Dinky that looked pristine mailed to them and when it arrived, it was dust. While I have no way of testing this theory, I suspect it has something to do with being so high in the sky. Either the atmospheric changes, or perhaps just extreme temperature changes.
I don't know on that one other than I sold a Mini Dinky here to a collector in Germany and it survived the trip with no problems but who knows what might happen to the next one. :rolleyes:
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Milton Fox Racing
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Turribulence is....

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Edited by Milton Fox Racing, Dec 7 2017, 10:54 PM.
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Z28HO
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Swifty
Dec 7 2017, 10:43 PM
Ouch! I always hate seeing crumblers. :( Poor cars!

On a side note, 426maxwedgie & I are looking for crumblers for a project we're working on. They need to still be intact, but with signs of imminent cracking. So if anyone has some and wants to get rid of them, let one of us know. The Mustang and Ram seen above would be good candidates... if they survive shipping.

Of note, when sending a crumbler, always ship ground. I've heard many people complain about getting a Mini Dinky that looked pristine mailed to them and when it arrived, it was dust. While I have no way of testing this theory, I suspect it has something to do with being so high in the sky. Either the atmospheric changes, or perhaps just extreme temperature changes.
Mustang is missing mirrors and wheels if you want it send an address. Rams already stripped and scraped but possible may be more, lots haven't been inventoried yet.
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Z28HO
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Milton Fox Racing
Dec 7 2017, 10:32 PM
Z28HO
Dec 7 2017, 10:14 PM
Plastic can be heated, reworked and glued. Sometimes it takes a lot of work but can be done.


Z28HO
Dec 7 2017, 10:14 PM
Plastic can be heated, reworked and glued. Sometimes it takes a lot of work but can be done.
It always seems like twice as much (or more) work though.

:petkitty:
All amounts to how important the model is.
Models I used to build ran in the 6 figure bracket.
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Pegers
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Convertible
some serious damage to those...
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Swifty
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The Mustang II is a Mustang too!
Z28HO
Dec 8 2017, 01:27 AM
Mustang is missing mirrors and wheels if you want it send an address. Rams already stripped and scraped but possible may be more, lots haven't been inventoried yet.
Thank you, and I completely understand! I was using your pics as an example, but anything in the condition of either the Mustang or Ram would be perfect for what we're planning. I'll send you a PM with what we're planning, and then you can make a decision on whether you want to send it or not. Sorry, I probably could have worded that better - I wasn't trying to coerce you into sending yours.
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Eurosport94
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I had 4-5 Racing Champions cars from this era fail like this, catastrophically. I've never had any other brand do this. It's crazy.
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Dean-o-mite
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Mini Dinky, Guisval and Racing Champions are notorious for the metal fatigue syndrome, but I also have some other random models from other manufacturers, too, including Greenlight:

Posted Image

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The problem affects some 1/18 scale models from Ertl and Kyosho, too, which the 1/18 community calls "zinc pest."
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microbuss
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I never have found this on ANY of my cars & trucks I've accumulated over the years

Only cars that I've had are those really cheap China thin metal ones
Step on it & it shatters instantly :o
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juantoo3
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~~~~~~~~~~~~~~

Dean-o-mite
Dec 13 2017, 03:19 PM
The problem affects some 1/18 scale models from Ertl and Kyosho, too, which the 1/18 community calls "zinc pest."
Not to draw too fine a line, but isn't zinc pest more like a rust of sorts?

Again my kindergarten level understanding of chemistry, but I understand metal fatigue in the instance of zamac / mazak / pot metal to be impurities that result in the metal crazing over time and shattering. Besides the already mentioned models, the old redline era Show Off / Byefocal is notorious for metal fatigue on the chassis.

Zinc pest, on the other hand, is more to do with corrosive exposure, such as immersion in water. I've seen pics of what remained of an old redline Nomad that had been in a corrosive situation for a long time and looked like a scrunched up mess of almost indistinguishable metal. I've seen many other examples of models with, for lack of a better description, a "flaking" condition not much different than rust other than color. It is my understanding this is what zinc pest is.

Again, my primitive understanding and open to correction, but I would think metal fatigue wouldn't be "catchy" as it is the result of poorly mixed molten metal....whereas zinc pest, as a corrosive "disease" so to speak, would potentially transfer model to model given the right conditions.
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Dean-o-mite
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No idea where the term originates, and I'm not claiming the 1/18 guys are correct in using that terminology, but the Ertl and Kyosho models crumble just like the 1/64 examples shown here, with no rust involved at all.
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toyotageek
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In the overall scheme of things, if the outcome of either problem results in a damaged model, that's all that matters to the collector.

I think the problems we and others are seeing run the range of metal fatigue to zinc pest and other problems in-between. I don't think there is a fine line where one problem ends and the other begins. Like I said before, we'd really need to hear what a specialist in the field could tell us, be it a chemist or metallurgist.

My best guess is both/all of these conditions are due to impurity or contamination of the metal when it's being mixed.

I personally don't think zinc pest is contagious, but that would require some testing to know for sure. Anyone have a car afflicted by it? Would you like to run a long term test with some test subjects?
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NUTHOUSE
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Station Wagon
I haven't really noticed any metal fatigue in my collection as of yet except for two Hot Wheels NASCARs.

The #44 Kyle Petty makes it look like the side got ripped off of it in a race. I'm not quite sure how it happened.

Posted Image
upload pictures to website

The #8 Hut Stricklin car is completely blown apart. I remember noticing a little fatigue in the casting and with just a little pressure the side came right off and the whole car followed right behind it.

Posted Image
upload pictures to website
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Swifty
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The Mustang II is a Mustang too!
Looks like Kyle and Hut tangled with the Intimidator!
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94cadillacfleetwood
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Nothing good ever happens after midnight.
I had the exact same Ram truck shown and the hood just popped off for no reason. I looked and it was cracked, along with the drivers' side front fender.
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K & O Racing
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Peace on ya brother
I have never seen anything like this ever. What in the world? I had no idea this could actually happen.
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ninuxx
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As an chemist I would say that all what I saw here is zinc pest:

https://en.wikipedia.org/wiki/Zinc_pest

Siku had some issues in the 1990s, some cars were already broken in the blister after hanging a year or two on the pegs.
Majorette did had some issues, but only very few models were affected in the early 1970s.
Matchbox had issues with some collectable lines in the 1990s-2000s (the trucks in 1/64).

As it is a matter of impure materials (or not the correct composition) those things appear more and more when operating manufacturing sites in far away asia - maybe where probably a CEO of a company has never been.
They mix something, sell it ..and thats it! Maybe they chose the cheapest raw materials or whatever.

Pls. do not mix it up with those white surface oxidation ...that can be removed ..and after applying some oil or WD40 it stays without further oxidation.
Zinc pest is irreversable and nothing can stop it.

early stage zinc pest

Posted Image
Edited by ninuxx, Dec 28 2017, 05:33 AM.
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juantoo3
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~~~~~~~~~~~~~~

Thanks for clearing that up, Niels!
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