Has anybody tried using Prekote when refinishing high magnesium content wheels? If so how did it work? I made the mistake of using aluminum wheel paint on some later Mondial wheels that I carfully sanded the faces to bare metal which lasted about 3 months so I get to do it again lol. http://www.pantheonchemical.com/prekote.aspx
Start at this page on my website and then see the next 6 or so pictures: http://ferrari308gtsi.multiply.com/photos/album/7/1978_Fiat_X19#photo=85
At our repair station we use "magcoat" which contains chromic acid. After you sand you must apply the product and allow to " burn in" no sanding can occur after that. Simply rinse with distilled water then paint. This product can be purchased at Advanced Aircraft Coatings in Oklahoma. (phone 4054957545) If you don't use this corrosion will be immediate. Good luck
Have you considered power coating? I had my wheels refurbished and powder coated recently. The cost and outcome was very good and six months on they are certainly holding up 100%
it's what I am using now for my wheel resto. info PreKote Surface Pretreatment (SP) As a response to the environmental concerns around pollution prevention and clean technologies, in 1996 the Department of Defense (DoD) began testing replacements for chromate conversion coatings as a safer alternative.3 Four products were tested; three were non-chromated conversion coatings, and one was a non-chromated surface pretreatment. Surprisingly, within six months of the DoDs testing efforts, only one of the four evaluated products, the NCSP, tested successfully as a suitable replacement for CCC. The NCSP product, PreKote Surface Pretreatment (PreKote SP), also eliminated other hazardous chemicals including etchants, solvents and alkali washes. Testing of the PreKote SP technology included flexibility, filiform corrosion, adhesion and 2000-hour salt spray on painted panels proving performance that surpassed the standard chromated methods (Figure 3).4 The first F-16 was painted in 1997, and the test was completed in 1998 showing excellent results from PreKote SP. In 2000 the Technical Order (TO) for repainting F-16s was changed to include specifications to use PreKote SP as a NCSP. Since that time, over 800 F-16s have been painted with the PreKote SP process. To date not a single aircraft has been returned to depot for a paint- or corrosion-related issue. The early aircraft have completed their six-year cycle and are returning to depot for standard maintenance overhaul. Currently, all F-16s and all training aircraft are engaged in using a NCSP with 16 U.S. Air Force bases. These planes have been deployed all over the world, most recently for utilization during Iraqi Freedom.
