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Vinyl tire warning--photo evidence!

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  • Member since
    January 2006
  • From: Baton Rouge, Snake Central
Vinyl tire warning--photo evidence!
Posted by PatlaborUnit1 on Sunday, February 3, 2008 2:35 PM

Hi everyone.

Take this as much a warning for new modelers excited about "lifelike" vinyl tires as a reminder for experienced modelers who have not had this problem (yet).

I have been telling people for years to avoid viny tires like those in AMT aircraft kits and use resin or all plastic replacements, and have often been poo-poo-ed and told manufacturers changed thier formulas and melting plastic is no longer a problem. The viny gun belts in the MRC 1/3h helicopters did the same thing to rotor components in the kit.

Two tigercats using these original AMT Ertl vinyl tires met a sad fate within 18 months of being built up.  one was built just snapping the tire onto the completed rim and the other had a piece of foil strip added to the rim "just in case" . The foil did nothing to slow the plastics' demise. 

The nose wheel was melted into the plastic parts storage bin and the one mainwheel has these two parts melted onto it. When i opened my first tigercat, the tire was sitting on top of the wing and had eaten its way into the wing sitting on the store shelf. I am sure that temperature plays some factor in the chemical process taking place that is now causing the vinyl to weep some oily subtance.

I hope this helps prevent someone from losing a model the way I did. I built my tigercats at the same time and they both ended up trashed due to it....

David

 

 

Build to please yourself, and don't worry about what others think! TI 4019 Jolly Roger Squadron, 501st Legion
  • Member since
    February 2003
  • From: Niagara Falls NY
Posted by Butz on Sunday, February 3, 2008 2:42 PM

 

 I could not agree w/ you more.. Those type of tires are Evil especially from AMT/Ertl.. You think one day, somebody would get a clue and fix this horrible occurance..!!

 Flaps up,

Mike

Rangers Lead The Way 

  If you would listen to everybody about the inaccuracies, most of the kits on your shelf would not have been built Too Close For Guns, Switching To Finger

  • Member since
    January 2007
  • From: Northern California
Posted by trexx on Sunday, February 3, 2008 2:43 PM

Good gawd! Who'd of thunk?!

Thanks.

  • Member since
    February 2004
  • From: Weymouth, Dorset, UK
Posted by chris hall on Sunday, February 3, 2008 3:16 PM

There's a simple remedy to this problem; line the wheel rims with Bare Metal Foil. Provides a barrier between the vinyl and the polystyrene. I've got models which are over 10 years old with vinyl tyres which have received this treatment, and which are perfectly fine.

Cheers,

Chris.

Cute and cuddly, boys, cute and cuddly!
  • Member since
    January 2008
  • From: new york
Posted by 96th BG 338th SQ on Sunday, February 3, 2008 3:38 PM

  Laborunit Banged Head [banghead]

   I'd have to reflect trexx's sentiments HOLYCensored [censored]! I've never heard of this problem before. Thanks for the education.

  I kinda like the bulged-out resin tires anyway....Sour grapes? I think not!!!!!Boohoo [BH]

   Regards, MacLeod

Why does the cat glare at me?
  • Member since
    January 2006
  • From: Baton Rouge, Snake Central
Posted by PatlaborUnit1 on Sunday, February 3, 2008 5:41 PM

Chris

I did that. All three wheels lined with a double layer of BMF foil. All three wheels ate completely through the BMF foil and turned the plastic to slag.

If it had eaten through one wheel,I  would say that I had not done a proper job of preventing the problem. With all three wheels destroyed, that sold me on never ever using any form of vinyl again.

 

David  

Build to please yourself, and don't worry about what others think! TI 4019 Jolly Roger Squadron, 501st Legion
  • Member since
    January 2004
  • From: VARNA, BULARIA
Posted by congo79 on Sunday, February 3, 2008 6:32 PM
PatlaborUnit1, some of my friends who are building AFV`s mentioned that problem with vinyl and their suggestions for solving this is a thick layer of acryl paint or lacquer and the other is CA glue. The main idea is to prevent any contact between the styrene and the vinyl. But there is one thing that really bothers me, why does the kit manufacturers put such parts in their kits, are they not aware of that problem???
  • Member since
    June 2004
  • From: Akron ohio
Posted by phoenix7187 on Sunday, February 3, 2008 7:23 PM
Ok I must have too get out of by box more often, this is the first I've heard of this. I've taken an interest becasue I have a 5 trumpeter kit that I think have that type of tire? I l took a good look at my corsair and they seems ok. It's been built for several years and I did not do anything special to protect the tires. Is this only on a specific type of vinyl tire or kit type?
Stan
  • Member since
    October 2006
  • From: Tucson, AZ
Posted by Archangel Shooter on Sunday, February 3, 2008 8:32 PM

Well I'll be! At 54 I guess I can still learn something new here. That's the first time I ever heard of vinyl tires melting plastic, I seldom use them which I guess is why. Thanks for the tip!

Scott 

 Your image is loading...

 On the bench: So many hanger queens.

 

 

  • Member since
    March 2005
Posted by philo426 on Sunday, February 3, 2008 8:43 PM
Well I made this Trumpy Wildcat about 3 years ago and the rubber tires seem to be in good shape.No melting issues to date ,but I will check them frequently.
  • Member since
    September 2005
  • From: North Pole, Alaska
Posted by richs26 on Monday, February 4, 2008 1:16 AM
It is like rubber bass worms in plastic tackle boxes-DON'T have them in non-approved containers as they will eat through them also.

WIP:  Monogram 1/72 B-26 (Snaptite) as 73rd BS B-26, 40-1408, torpedo bomber attempt on Ryujo

Monogram 1/72 B-26 (Snaptite) as 22nd BG B-26, 7-Mile Drome, New Guinea

Minicraft 1/72 B-24D as LB-30, AL-613, "Tough Boy", 28th Composite Group

  • Member since
    March 2005
Posted by philo426 on Monday, February 4, 2008 1:44 AM
You know whats strange is,I have model cars with 30 year[-old vinyl tires that are like new.with no signs of adverse chemical reactions.Why wouldn't AMT use the same type of vinyl for their A/C Tires?
  • Member since
    February 2003
  • From: Panama City, Florida, Hurricane Alley
Posted by berny13 on Tuesday, February 5, 2008 10:47 AM

 philo426 wrote:
You know whats strange is,I have model cars with 30 year[-old vinyl tires that are like new.with no signs of adverse chemical reactions.Why wouldn't AMT use the same type of vinyl for their A/C Tires?

In the old days they used real rubber and not vinyl.  Some kit manufacturers still use rubber and not the cheaper to make vinyl.  Vinyl is synthetic and cheaper than real rubber.

Berny

 Phormer Phantom Phixer

On the bench

TF-102A Delta Dagger, 32nd FIS, 54-1370, 1/48 scale. Monogram Pro Modeler with C&H conversion.  

Revell F-4E Phantom II 33rd TFW, 58th TFS, 69-260, 1/32 scale. 

Tamiya F-4D Phantom II, 13th TFS, 66-8711, 1/32 scale.  F-4 Phantom Group Build. 

 

  • Member since
    June 2003
  • From: Reno, Nevada, USA
Posted by Silverback on Wednesday, February 6, 2008 3:11 PM

I don't use vinyl/rubber tires on aircraft models for a number of reasons:

*   The don't look particularly realistic.

*   The CAN and WILL devour plastic.

*   The best you can hope for is that they dry out and crack without taking the landing gear with them.

 That said, I have vinyl/rubber tires on car models that are over thirty years old and are still good as new.  What's the difference? More important; WHY the diff?

 

Phil

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