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Old 10-30-2006, 01:34 PM   #101
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I think this is only a color problem. The cracked areas are sharp bordered. But who cares? The model is destroyed! Bad quality!
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Old 10-30-2006, 02:40 PM   #102
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Originally Posted by Garuda747400 View Post
hi cebu,

bought this model from ahong kong seller a few months ago and it was in this condition when i recieved it, would you say it was made this way or changed over time due to hong kong tempertures
Hard to say what's the cause, but I think the same like Rudi it's a problem with the paint only.

What looks interesting to me is the most affected parts are the blue colored.
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Old 10-31-2006, 07:32 AM   #103
 
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I have inspected my models again last weekend and noted that the same problem (the bubbles problem) happens to my Herpa A310 Royal Jordanian. This proves that certainly this is not a matter peculiar to Aeroclassics models. Also, for the AC models which I purchased in the past two years, they do not have any problem so far and I think AC may resolve the problem already. But it is really sad to see those beautiful AC models having this kind of problem since I think AC models are of the best quality and accuracy of all manufacturers.

It makes me wonder whether the humid climate here in Hong Kong is a factor to that. If that is the case, whether we people in Hong Kong, should stop collecting die cast plane models.

However, on the other hand out of my approximately 1,600 models, only 5 of which having this kind of problem also makes me wonder whether it is really a problem of weather or quality problem with the products.

For my nearly 500 dragon wings models, all are in good condition. However, in my local retailer, recently I looked at their two Gemini Cargo DC-10 and noted that the two models also the bubbles problem. The local retailer has stored the models in air-conditioned premises, so then it may indirectly proves that this not relating to humidity at all.

So I really hope that there will be an answer from every manufacturer as to this kind of problem and I am really thankful to Cebu Pacific raising this topic here. If that is relating to defective product, I think we should get an exchange or refund for the product concerned. I do not think this thread should be directed against any one manufacturer, but for customer's rights concerned, if the product is defective, the manufacturer should have the responsibility to replace their defective products.

For my Herpa model, I have just raised the issue with Herpa and will see whether they have any reply to my complaint. For other brand models, I think it may not be right to publicly complain about that previously without contacting them direct. However, I tried to contact the relevant manufacturer a few months ago, but no reply from them so far.

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Old 10-31-2006, 09:27 AM   #104
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Quote:
Originally Posted by yflchoy View Post
I have inspected my models again last weekend and noted that the same problem (the bubbles problem) happens to my Herpa A310 Royal Jordanian. This proves that certainly this is not a matter peculiar to Aeroclassics models. Also, for the AC models which I purchased in the past two years, they do not have any problem so far and I think AC may resolve the problem already. But it is really sad to see those beautiful AC models having this kind of problem since I think AC models are of the best quality and accuracy of all manufacturers.
It makes me wonder whether the humid climate here in Hong Kong is a factor to that. If that is the case, whether we people in Hong Kong, should stop collecting die cast plane models.
However, on the other hand out of my approximately 1,600 models, only 5 of which having this kind of problem also makes me wonder whether it is really a problem of weather or quality problem with the products.
For my nearly 500 dragon wings models, all are in good condition. However, in my local retailer, recently I looked at their two Gemini Cargo DC-10 and noted that the two models also the bubbles problem. The local retailer has stored the models in air-conditioned premises, so then it may indirectly proves that this not relating to humidity at all.
So I really hope that there will be an answer from every manufacturer as to this kind of problem and I am really thankful to Cebu Pacific raising this topic here. If that is relating to defective product, I think we should get an exchange or refund for the product concerned. I do not think this thread should be directed against any one manufacturer, but for customer's rights concerned, if the product is defective, the manufacturer should have the responsibility to replace their defective products.
For my Herpa model, I have just raised the issue with Herpa and will see whether they have any reply to my complaint. For other brand models, I think it may not be right to publicly complain about that previously without contacting them direct. However, I tried to contact the relevant manufacturer a few months ago, but no reply from them so far.
Lawrence

Good Point! Proof Positive It's not Limited To One Manufacturer. Someone First Posted Thhe Bubbling Issue On A DW 777, Then A Few Aeroclassics, Now You Pointed Out The Gemini DC-10s & The Herpa A-310.

I Suspect The Humidity & SALT Air Are Contributing Factors, But NOT The Underlying Cause. In Arizona This May NEVER Have Occured, But Not everyone Lives On Arizona. Abd Hong Kong Is Not THE Only Region Of High Humidity & Salt Air.
Manufacturers Need To Realize This & Formulate Thier Alloys To Stand Up To Those Elements.

5 Out Of 1,600 Models Is Still Resonably Isolated. I Have Only One Out Of 900.
And Yes I Think We Should Be Compensated By Replacements.
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Old 10-31-2006, 09:39 AM   #105
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A Final Thought On The Bubbling/Brittle Issue. AFAIK, The Parts To These Models Are Made In Separate Factories. As A Marine Mechanic, I Know When 2 Different Alloys Make Contact, Electrolyisis Occurs. For Those That Don't Know What that Is, It's a Slight Electrical Current Caused By The Positive & Negative Electrons In The Metals Used. Zinc Is A Combination Of Metals. But That's Not The Only Issue. If The Formula For The Wings Are Slightly Different From The Formula Of The Fuselage, Then Electrolyis Will Occur.
Electrolyis Causes The Metal To Corrode Making The Metal Brittle & Unbendable & The Bubbling Is From Metal Decaying Itself.
As An FYI, Zinc Is Widely Used In the Marine Industry As A Sacrificial Plate, To Eliminate Corrosion Of An Outboard & Other Types Of Marine Engines.
My Knowlede Is Rasther Limited, But to The Point.
I'm Sure There are Experts that Can Elaborate On This.
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Old 10-31-2006, 11:26 AM   #106
 
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Originally Posted by yflchoy View Post
It makes me wonder whether the humid climate here in Hong Kong is a factor to that. If that is the case, whether we people in Hong Kong, should stop collecting die cast plane models.
No, you don't have to stop collecting. You just need to run your air-conditioner to maintain a certain temperature and humidity level. Perhaps 'Cebu Pacific' can let us know the optimum temperature and humidity level to store these models based on his analysis. Or better, move to AZ!
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Old 10-31-2006, 11:30 AM   #107
 
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Originally Posted by L-1011-Heavy View Post
As An FYI, Zinc Is Widely Used In the Marine Industry As A Sacrificial Plate, To Eliminate Corrosion Of An Outboard & Other Types Of Marine Engines.
Zinc is also very much used in the steel industry to form galvanized steel by hot-dipping the steel parts in molten zinc to protect the steel itself from corrosion.
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Old 10-31-2006, 10:03 PM   #108
 
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Sorry for some confusions in my post! To clarify one matter to L-1011-Heavy, no problem so far happens to my Gemini Jets. The model which I actually refer to is the Gemini Cargo DC-10 made by Dragon Wings. So I think all manufacturers should learn from Gemini Jets.

Thanks for the suggestion of D-AIHC, I actually store half of my models in a 24 hours air-conditioned room. I note that this will delay the bubbles coming up, but eventually, they still emerge.

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Old 10-31-2006, 11:45 PM   #109
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What You Need Is Not So Much Air Conditioning, But Rather De-Humidifier. The Moist Air Does Not Go Away From Air Conditioning Alone. It's Still Humid.
Plus The De-Humidifier Helps Eliminate A Bigger Enemy To Metal Than Humidity. Salt Air. I Know This From Living In Antigua. The Salt Breeze (You Can't Notice It) Destroys Cars & Anything Metal There In Just A Few Short Years. Humidity Levels In Antigua Are No Where Near As High As Hong Kong, But Have Major Corrosion Problems With Metals.
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Old 11-08-2006, 05:06 PM   #110
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I am back with new analysis results from a Phoenix A330-200.

All results and pictures are to find in this link. http://34189.dynamicboard.de/file.ph...lassics+Modell
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Old 11-08-2006, 07:43 PM   #111
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I don't understand all the details. Did Phoenix make a mistake they could avoid?
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Old 11-08-2006, 11:07 PM   #112
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Thank you for providing us with this invaluable information through your extensive research. This thread and the responses to it have given me the best insight into the world of diecast aircraft production.

I vote this thread as: BEST THREAD FOR 2006!

Through your scientific research, you have earned the GOLD STAR.
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Old 11-09-2006, 01:08 AM   #113
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Quote:
Originally Posted by Rudi View Post
I don't understand all the details. Did Phoenix make a mistake they could avoid?
With this zinc alloy from Phoenix everything is all right. This alloy is a little bit different only from the standard zinc alloys which are usual in the USA and Germany. Maybe it is a standard in China, I don't know it.
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Old 11-09-2006, 01:21 AM   #114
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Thank you for providing us with this invaluable information through your extensive research. This thread and the responses to it have given me the best insight into the world of diecast aircraft production.
I vote this thread as: BEST THREAD FOR 2006!
Through your scientific research, you have earned the GOLD STAR.
I couldn't agree more. This information is as important as knowing what's to be released and when.
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Old 11-09-2006, 01:35 AM   #115
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A Final Thought On The Bubbling/Brittle Issue. AFAIK, The Parts To These Models Are Made In Separate Factories. As A Marine Mechanic, I Know When 2 Different Alloys Make Contact, Electrolyisis Occurs. For Those That Don't Know What that Is, It's a Slight Electrical Current Caused By The Positive & Negative Electrons In The Metals Used. Zinc Is A Combination Of Metals. But That's Not The Only Issue. If The Formula For The Wings Are Slightly Different From The Formula Of The Fuselage, Then Electrolyis Will Occur.
Electrolyis Causes The Metal To Corrode Making The Metal Brittle & Unbendable & The Bubbling Is From Metal Decaying Itself.
As An FYI, Zinc Is Widely Used In the Marine Industry As A Sacrificial Plate, To Eliminate Corrosion Of An Outboard & Other Types Of Marine Engines.
My Knowlede Is Rasther Limited, But to The Point.
I'm Sure There are Experts that Can Elaborate On This.
Zinc is actually a metal in its own right, not an alloy. The alloy used in diecast has a specific name, but it slipped my mind at the moment. It's been around for quite a while, and different manufacturers use different amounts of the zinc, aluminum, copper and magnesium to make the alloy. Some combinations are stronger than others. You're right, too, that zinc is a "sacrificial" metal, used in galvanization and as an anode to attract corrosion away from iron and steel. To prevent this action in diecast, the levels of copper and magnesium have to be just right. It won't stop tarnishing, or reactions to the acids and oils in fingerprints. The "bare metal" planes favored by GJ have an unfortunate tendancy to tarnish, which is why I like the polished or chrome models better. Painted planes resist corrosion better, but as Heavy said, electrolysis can occur between alloys with different mix ratios. Metal also expands and contracts, which causes tiny cracks in the paint, and can get worse with time and temperature variations. I think having the metal analyzed was great, and goes a long way to helping us understand what's going on with our planes. It's also a relief to know this isn't a cheap metal being used, just slightly different from US and European standards. I do think, though, that QC in these factories isn't the greatest, and bad batches probably do slip by every now and then.
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Old 11-10-2006, 02:41 PM   #116
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A few pictures taken by a microscope. The parts are from the B720 model destroyed by zinc plague.

Later I will translate the attached text in english.

http://34189.dynamicboard.de/file.ph...lassics+Modell
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Old 05-19-2007, 07:57 PM   #117
 
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Sorry for digging up such an old thread, but I think you guys need to know that I have just discovered my BB Delta Express B737-200 Powerpuff Girls begins to fall apart!
http://www.diecastaircraftforum.com/...view-3997.html
It will be on eBay soon together with other damaged models (of course mentioned as damaged), maybe for parts or as a fire drill plane on a model airport.
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Old 05-19-2007, 09:42 PM   #118
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Quote:
Originally Posted by L-1011-Heavy View Post
What You Need Is Not So Much Air Conditioning, But Rather De-Humidifier. The Moist Air Does Not Go Away From Air Conditioning Alone. It's Still Humid.
Incorrect, Heavy. An air conditioner IS a de-humidifier (having worked in the field 12 years, I do know this much), but if your air conditioner is over-sized, it'll cool the air faster than it can de-humidify.
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Old 05-19-2007, 09:45 PM   #119
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Originally Posted by Don Clipper Spirit View Post
Sorry for digging up such an old thread, but I think you guys need to know that I have just discovered my BB Delta Express B737-200 Powerpuff Girls begins to fall apart!
http://www.diecastaircraftforum.com/...view-3997.html
It will be on eBay soon together with other damaged models (of course mentioned as damaged), maybe for parts or as a fire drill plane on a model airport.
What's you model doing? Are the wings falling off, or is it bubbling up? Are other models you own doing this?
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Old 05-20-2007, 08:56 AM   #120
 
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Paint on the wings is cracking up, and some parts of the wing start to bubble. Therefore is it only usefull for spare parts or for a fire drill plane on a model airport.....
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Old 05-20-2007, 09:54 AM   #121
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Quote:
Zinc is actually a metal in its own right, not an alloy. The alloy used in diecast has a specific name, but it slipped my mind at the moment. It's been around for quite a while, and different manufacturers use different amounts of the zinc, aluminum, copper and magnesium to make the alloy.
I'm not an expert, but isn't it what is called Zamac ?
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Old 05-20-2007, 10:21 AM   #122
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Default Re: Problems with zinc alloy

Well guy's i have a bingo!!! After reading this post again i decided to have a look at my AC 737's and bingo i found my SMA KLM 732 in a very bad shape and no i didn't bought it like that!

I've seen today the DL 732 from Don Clipper and mine is the same! Paint is cracking up on the wings and stabilizors!

I will add pics later today!

Now i'm really worried!!!!! What's next??????? DO i have to keep a close eye on all my AC models or shall i sell them right now before the same thing is going to happen??????? I don't want to find out everytime i inspect my models that i can throw away a model!

One thing is for sure! Do i find one more model with this problem than i will sell my whole collection before i discover this problem again!!

BTW this KLM 732 is going with others on Ebay for parts or fire drill plane on your model airport!
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Old 05-20-2007, 11:33 AM   #123
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Default Re: Problems with zinc alloy

My SMA KLM 732 is also showing dimples and paint peeling.

Thankfully, my SMA DC-9-32s are still smooth. Only time will tell.
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Old 05-20-2007, 11:52 AM   #124
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I've noticed that this problem is most frequent on painted metal wings, where the zinc is thinnest, and the wings flex microscopically from temperature changes. I think that flexing is making tiny cracks in the paint, and creating a way for the corrosion to start. About a third of my planes are DW, and none show signs of corrosion on the fuselages. The rest are a mixed bag, mostly GJ and AC, and so far, thank God, no sign of problems on them, either. I think if I found one with crap on it, I'd just toss it and eat the money I invested in it. After five or six times of that, it'll be off to eBay with the rest.
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Old 05-20-2007, 01:41 PM   #125
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How about compiling a database to see which models/manufacturers are most affected, which years, etc. That would give collectors a good indication about the spread, value and nature of the problem. Anyone up for this?

720's seem mentioned most, followed by 737-200's. AC and SMA are affected. Who else and which factories made them? Some collectors are sinking 1000's of $$ into this hobby. Would you take this from a quality watch, cuttlery, your car?

We are not talking wear and tear but some factories using sub standard material. Who made a pretty penny here and did they know it. By the tone of some of these threads and the nature of this problem I am beginning to feel uncomfortable about the whole thing. Are we just too stupid to watch what we spend our money on?

Manufacturers and dealers calling each other names on this forum get more exposure than this problem of material fatigue????????? Anybody want to do some math? If 10 out of 200 planes were affected that makes 5%. In a total production of 5000 that leaves 250 suckers. At $30 a pop that makes $7500,- in cracked wings and bubbly paint. In a yearly production of 10000 this would double. Extrapolate to four manufacturers and you get the picture. This is speculation, of course so let's get some hard numbers.
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Old 05-20-2007, 02:19 PM   #126
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This thread/problem is being blown out of proportion.

The problem was a result of ONE bad batch of zinc in a bunch of models (720's and 737's) that were made.

It did affect a month or two's releases, but THAT IS IT.

Some models were affected, while others aren't. Case in point the Delta Express that Don Clipper was talking about; I have one, and it's perfectly fine, while his is ruined. I have a Canadian Pacifique and Air Tanzania that is ruined, while some may have perfect examples.

But, bottom line, problem was discovered and rectified long, LONG ago.
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Old 05-20-2007, 02:39 PM   #127
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This thread/problem is being blown out of proportion.

The problem was a result of ONE bad batch of zinc in a bunch of models (720's and 737's) that were made.

It did affect a month or two's releases, but THAT IS IT.

Some models were affected, while others aren't. Case in point the Delta Express that Don Clipper was talking about; I have one, and it's perfectly fine, while his is ruined. I have a Canadian Pacifique and Air Tanzania that is ruined, while some may have perfect examples.

But, bottom line, problem was discovered and rectified long, LONG ago.
When and how was it rectified? One batch only? Will SMA and AC replace faulty planes?
How come my Herpa's and Schabak's from the early 80's and 90's do not suffer from this? Were AC Northwest 720's produced in the same batch as SMA 737 Power Puff's?
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Old 05-20-2007, 02:45 PM   #128
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This thread/problem is being blown out of proportion.

The problem was a result of ONE bad batch of zinc in a bunch of models (720's and 737's) that were made.

It did affect a month or two's releases, but THAT IS IT.

Some models were affected, while others aren't. Case in point the Delta Express that Don Clipper was talking about; I have one, and it's perfectly fine, while his is ruined. I have a Canadian Pacifique and Air Tanzania that is ruined, while some may have perfect examples.

But, bottom line, problem was discovered and rectified long, LONG ago.
So Faheed, we have your absolute assurance that this problem does not exist anywhere but in a small select batch of models, and that this will never affect the quality of any other models? Can we pinpoint the affected models, and who is the source of your information? You seem so positive about this situation, I just want to know how to protect my collection.
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Old 05-20-2007, 02:48 PM   #129
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When and how was it rectified? One batch only? Will SMA and AC replace faulty planes?
How come my Herpa's and Schabak's from the early 80's and 90's do not suffer from this? Were AC Northwest 720's produced in the same batch as SMA 737 Power Puff's?
Doubtful that anybody is going to replace your models...SMA no longer exists, and AC isn't going to whip up a new batch of replacement planes. Just one of those things
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Old 05-20-2007, 03:34 PM   #130
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If I were you, I'd just throw them all in the trash and start collecting Beanie Babies (oh, forget that, your stitching will come loose a few years later and you will want a new Beanie Baby)

Yeah.....a company is going to replace a 2-4 year old model
(some are not really in touch with reality)

I've never seen any warranty on any model planes, someone care to post this warranty?
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Old 05-20-2007, 04:12 PM   #131
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Default Re: Problems with zinc alloy

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Originally Posted by JustPlaneCrazy View Post
If I were you, I'd just throw them all in the trash and start collecting Beanie Babies (oh, forget that, your stitching will come loose a few years later and you will want a new Beanie Baby)
Yeah.....a company is going to replace a 2-4 year old model
(some are not really in touch with reality)
I've never seen any warranty on any model planes, someone care to post this warranty?
that's why our bs is extremely valuable. It will last forever
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Old 05-20-2007, 04:31 PM   #132
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Default Re: Problems with zinc alloy

Quote:
This thread/problem is being blown out of proportion.
I think it would'nt had if this information had been provided from the onset. When we all fear to see our models turn to dust, it's legitimate to wonder why and what can be done.
Now if this affected only a batch, I guess the best thing to avoid people posting questions like "is my XXX 737 from this batch ?" is to provide us with a list of every model made from it.
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Old 05-20-2007, 04:44 PM   #133
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Default Re: Problems with zinc alloy

If it is one batch give us the information so that nobody blows $100 on a very rare model that is about to turn to scrap in a year or two. Remember, we collect, i.e. trade, sell and buy old rare models to complete our collection. This kind of info should adjust the value of some models up and down.

So again how was it rectified? An honest answer would be nice.
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Old 05-20-2007, 04:46 PM   #134
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Default Re: Problems with zinc alloy

I am willing to collect the info on which planes fall apart. Send me a PM with the plane, aprox. purchase date and location (humid, dry climate).
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Old 05-20-2007, 04:58 PM   #135
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Default Re: Problems with zinc alloy

I really don't care if this thread is being blown out of proportion or that another one thinks they are only models!

If i have a problem with a model concerning this issue i say it here and in this thread!

So Faheem what you are saying is that the chance is there that if you have a model from that line you could have or get this problem! You only don't know when or if it's going to happen with your model!

Can it only happen with the 737 and 720 from that line or is it also possible that i will find a 767 or 747 with this issue?? You say it were only 73's and 720's but aren't they others made from the same metal?

The worst thing that can happen is that i find a TU-154 with this issue!

Heart breaking!!!!!!!
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Old 05-20-2007, 05:47 PM   #136
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Default Re: Problems with zinc alloy

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I've never seen any warranty on any model planes, someone care to post this warranty?
No warranty on model planes, too small to tampoo and too small to read but:

The AeroClassics "Quality for the Hobby" Guarantee

How about taking them by their own words
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Old 05-20-2007, 06:17 PM   #137
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Default Re: Problems with zinc alloy

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No warranty on model planes, too small to tampoo and too small to read but:
The AeroClassics "Quality for the Hobby" Guarantee
How about taking them by their own words

And they do, the problem was rectified years ago as stated many times.....

Tell you what, go on over to the Buzz and ask Gordon (former SMAC owner) to refund all your money or replace your model......

Or better yet, wish in one hand and crap in the other and see which one fills up first

Oh, by the way, you still sitting on any of those Tucrapo's you had left over when you ran that company into the ground?
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Old 05-20-2007, 07:08 PM   #138
 
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Default Re: Problems with zinc alloy

Can the pittyfull posters who post nothing but untrue crap post their bullsh.t elsewhere? This thread has always been very usefull and informative, that's exactly what forums are about. The bullsh.t which falls down from the sky when this issue is being discussed here is really unbelievable.

I own a collections worth thousands of Euros and I am collecting for many years. Yet, this DL Powerpuff Girls model is my 4th model which is cracking up and falling apart. As soon as one more model starts falling apart like it has been to Tsjernobyl, than I will toss my entire collection on eBay. I will not wait and see my precious collection reducing to rust and rubble over the years, after I have spend thousands of hard earned Euro's on them.

It is not an isolated problem, the fact that several GJ releases have cracking paint, being less than the SMA's or AC's, proves that. I also know that AC B767's have this problem. My post of yesterday was purely to warn other collecters that another model has decided to move on to another life.
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Old 05-20-2007, 09:47 PM   #139
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Default Re: Problems with zinc alloy

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So Faheed, we have your absolute assurance that this problem does not exist anywhere but in a small select batch of models, and that this will never affect the quality of any other models?
Yes, you do. While I won't shoot myself if another model is affected, I can say with a good degree of certainty, that this was an isolated issue, on SOME releases.

Quote:
Can we pinpoint the affected models, and who is the source of your information?
Not really, like I said earlier. Some models (in the same release) can be good, while others can be bad, it's a toss up.

The source of my info? The model maker of course Andrew and I had a lengthy discussion about this a while back, as I had a few affected models. Bottom line (unfortunately) is nothing can be done about those models. What has been done since, is the guarantee that no furthur models were bad.

Think about it, since early 2003, how many AC/BB/SMA etc models have left that factory? Thousands upon thousands of pieces, and all are good (in terms of the zinc quality).
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Old 05-20-2007, 09:49 PM   #140
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Default Re: Problems with zinc alloy

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It is not an isolated problem, the fact that several GJ releases have cracking paint, being less than the SMA's or AC's, proves that.
Cracked paint is a whole 'nother story rather than these crumbling models. The cracking paint is likely due to humidity issues, while the the zinc issue is an inherent flaw on SOME models released back in 02/03.
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Old 05-20-2007, 10:56 PM   #141
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Default Re: Problems with zinc alloy

Photos! If you have a model with this issue you will notice that the wings and/or stabilizors will curl upwards!

It's very sad to see my model in this condition! There goes my KLM 732.......heart breaking!
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Old 05-20-2007, 11:10 PM   #142
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Default Re: Problems with zinc alloy

that looks painful. my condolences. best not to linger.
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Old 05-20-2007, 11:46 PM   #143
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Default Re: Problems with zinc alloy

Ummmm...I need to check my SMA 732 fleet right now.
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Old 05-21-2007, 12:11 AM   #144
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Default Re: Problems with zinc alloy

Quote:
Originally Posted by KRASAIRIL62 View Post
Photos! If you have a model with this issue you will notice that the wings and/or stabilizors will curl upwards!
It's very sad to see my model in this condition! There goes my KLM 732.......heart breaking!
When I first pulled out my KLM 732, I was looking at the fuselage; dimple city. Having just pulled it out again, I couldn't believe what I missed. Not only is the right side wing curled upward, the wings and horizontal stabs have pitting and cracking paint.

I checked the two Delta Widget 732s and both have some pitting on the wings; no cracked paint anywhere. Fuselages look fine.
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Old 05-21-2007, 12:21 AM   #145
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Default Re: Problems with zinc alloy

Trying to zero in one these bad batches that ba777-236 was refering to, I came to the following conclusion:

My cracked up KLM 732 and to a much lesser degree, my two Delta Widget 732s came in SMA's single release white box.

My 732s that came in the single release tan box checked out fine; clean as Kleenex. A relief to be sure.

Please check your models to compare notes. Thanks.
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Old 05-21-2007, 01:26 AM   #146
 
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Default Re: Problems with zinc alloy

Yes, it is true that only older AC releases have the bubbles problem and I am not aware of any compliant of this kind of problem with the recent AC releases. Upon re-checking of my 1,8xx 1:400 models, I have noted the following models having the problem:

AC Air China B767-300
BB Australian B767-300
DW U-Land Airlines MD-80
DW Lufthansa B747-400 Hanover Expo Scheme
GJ Continental B777-200
GJ Delta B777-200 Winter Olympics Scheme
GJ Kuwait B777-200
Herpa Royal Jordanian A310
Phoenix Air Namibia MD-11

So, this kind of problem is not only concerning the product of a single manufacturer, but it is common to all manufacturers. As mentioned by others, AC has ratified the problem and I do find any problematic models from AC these few years. However, for other manufacturers, it seems that the problem occurs from time to time and I think it is better for us collectors to make complaints against them to make them alert of the problem.

In fact, I have written to a few manufacturers recently and the followings are their responses:

Herpa: they sent me a replacement model - real firs class service to collector.

DW: Still negotiating with them.

Phoenix: no response so far.

GJ: they replied that they have never heard or aware of the problem and they do not have replacement in stock to send to me. So I acquired replacements from other retailers myself.

For the AC Air China, a bought another one from a retailer and found that it has usual glossy surface and I am afraid that bubbles will emerge eventually. However, I really love the model and take the risk and bought it.

For the BB Australian 767, I acquired the same model produced by GJ to replace it.

Lawrence
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Old 05-21-2007, 03:30 AM   #147
 
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Default Re: Problems with zinc alloy

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GJ: they replied that they have never heard or aware of the problem and they do not have replacement in stock to send to me. So I acquired replacements from other retailers myself.
GJ has been notified at least three times about problems with their models. And every time they reply you that they have never heard about the problem and it's the first time. Exactly that.

GJ is really a lousy company with attitude, if they just replied what the porblem causes than it would be enough, but they pretend nothing ever happened instead and let you buy another one. Sad company.
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Old 05-21-2007, 04:57 AM   #148
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Default Re: Problems with zinc alloy

There was a problem with one particular BigBird 1:500 B744 - from memory it was the Singapore special and the wings were very brittle and four I received were shattered - rumour has it that possibly the alloy had been polluted - possible with sputum but more likely by the actions of a demotivated member of staff who used the container as a stopgap latrine!
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Old 05-21-2007, 08:44 AM   #149
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Default Re: Problems with zinc alloy

1800+ models and only 9 had a problem? Pretty good odds, unless you have on of the models in question. Are all the models affected older releases? Most of my collection is dated after 2003, I didn't start collecting until February of last year (up to almost 400 now, pretty good, eh?).
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Old 05-21-2007, 11:58 AM   #150
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Default Re: Problems with zinc alloy

Quote:
Originally Posted by fazeman View Post
When I first pulled out my KLM 732, I was looking at the fuselage; dimple city. Having just pulled it out again, I couldn't believe what I missed. Not only is the right side wing curled upward, the wings and horizontal stabs have pitting and cracking paint.
I checked the two Delta Widget 732s and both have some pitting on the wings; no cracked paint anywhere. Fuselages look fine.



I'm So Glad Others Have Posted Issues On The KLM. I Too Noticed The Mysterious Upward Flex Of The Wing & 2 Days Ago, While Gently Dusting It With A Rag &As I've Done For 5 Years With ALL My Models) The Wing Broke. I Believe Not Only Was The Metal Brittle, But Under Stress From The Fact It Bent Upward.

Though This Was An SMA Release, It Was Made In The Aeroclassics Factory & I Think We Should Get At Least Replacement Wings With Correct Reg#s Painted On Them.

This Also Happened To An Aeroclassics Canadien Pacifique 737. The Wing Mysteriously Broke In 3 Places. I Foolishly Blamed My Landlords Son, But I Think It Broke On It's Own On The Shelf.
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