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Trumpeter Vinyl Tire Question


Ryan

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If one was to paint the rim first and then stretch the tire over it to fit, will the paint crack on the tire?

Should you or can you primer these things before attempting?

 

Thanks,

Ryan

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I would not usually paint vinyl tyres at all, due to the chance of the paint either cracking or reacting with the vinyl over time. I would expect that adding another layer of paint in the form of primer, would only increase the chances of this happening.

S

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Put the tire on.

Liquid mask the tire with inert substance like PVA glue.

Paint the rim. Use solvent based paint and seal w 50/50 IPA/Future.

Demask by water soaking , fingernail peel.

Weather with pigments. I have heard tis can be done , practise on the vinyl sprue.

I think I would go about it that way.

 

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Tire test has failed, at first it seemed OK as the rim only scraped the inside of the rim.

49501573326_0a4cef0322_h.jpgTire Test by The 3rd Placer, on Flickr

As I worked with it more I realized there was absolutely no adheasion what so ever, even the Tamiya primer flaked off like the sunburned skin of a Wisconsin spring breaker!

49501068448_96970b21c2_h.jpgTire Test by The 3rd Placer, on Flickr

Now we know.

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There is something else you can try. In the automotive world, the same problem exists painting flexible plastic. They use adhesion promoter that grips to vinyl and urethane, and can be painted over. A car parts store brand is called “bulldog” and comes in a spray can. It’s not very expensive, so it might be worth a try.

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