my80malibu Posted March 12, 2016 Posted March 12, 2016 I have some kits, Mainly Revell that are destroying the wheels from the Tire's melting down, Chemically reacting in a negative way. Is there a way to stop this, or prevent this from happening, that has been found to be a success?
Tom Geiger Posted March 12, 2016 Posted March 12, 2016 There is a chemical reaction between the wheel and the tire. You can stop it by not allowing them to touch one another. I saw one tip to BMF the wheel where they would mate.Also, beware of that tire hitting the inner fender well. It will melt that too. I have one of those!
Art Anderson Posted March 12, 2016 Posted March 12, 2016 There is a chemical reaction between the wheel and the tire. You can stop it by not allowing them to touch one another. I saw one tip to BMF the wheel where they would mate.Also, beware of that tire hitting the inner fender well. It will melt that too. I have one of those!It's not any sort of chemical reaction--rather it's the result of excessive PVC Monomer (that's the stuff that makes PVC soft & flexible, as PVC normally is a hard plastic--think PVC pipe for example). This used to be a serious problem, but not nearly so much if the proper PVC feed stock is used in molding model kit tires. (Along these lines I once packaged some plated resin chrome parts with clear plastic cling-wrap--generic Saran Wrap if you will--and while the stuff didn't damage the resin itself, it sure did ruin the plating in a day or so, lesson learned!). In short, the PVC Monomer softening agent can penetrate a paint job, and certainly scar the surface of unprotected polystyrene.So, what to do? any metal, regardless of how thin, will stop the offending plasticiser, simply because it's impenetrable, so a simply wrapping of the circumference of a styrene wheel with Bare Metal Foil before mounting the tires will protect the styrene wheel from this. So will a thin wipe of epoxy glue (let it set up before mounting the tires. Even a thin layer of CA glue (hardened up with one of the sprayable CA setting agents will work as well. I've done all three when I've been concerned about a particular set of PVC tires.Art
Snake45 Posted March 12, 2016 Posted March 12, 2016 I've found that water-based acrylic paint or Future also makes a good barrier between wheel and tire. Enamel doesn't--the vinyl eats enamel even worse than plastic.
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