Green Rust proofing Paint/Coating

[HopePilot]

Does anyone know the brand/name of the green rust proofing coating model/brand Mooney used in the early 80's.  I'd like to redo a couple spots that have flaked off.  Has anyone else done this?

Sorry if I'm calling it by the wrong name.

[Carl S]

Looks like zinc chromate.  Aircraft Spruce probably has some.  Looks like it is going to be a pain to get to.

 

[HopePilot]

What's the difference between Zinc Phosphate and Zinc Chromate?

 

Also, now I'm wondering if I have yellow and not green...

[testwest]

This is almost certainly yellow zinc chromate primer, one manufacturer is Product Techniques, Inc (PTI).  Aircraft Spruce sells it, look here http://www.aircraftspruce.com/catalog/cspages/ptizincchromateprimer.php . It would probably cost more to ship to Burbank once you pay the hazmat upcharge than it would to fly from Burbank to Corona and go pick it up.

Would also be a good excuse to get a chili size at Bobby A's cafe

[HopePilot]

Sound great!  Thanks for the help!

[MooneyMitch]

Just a suggestion for you.  You might investigate preparaing the area with an aluminum cleaner and self-etching primer prior to the zinc chromate application.  Heck, that info. might even be listed on the can of the zinc spray.  For that matter, ask ArtCraft.  I know they will help you with this.

Also, maybe put some strong 3/4" plywood [cut to fit] sections into the rear of your tail section so you can crawl/lay comfortably while you work.  Getting some light and yourself in that area is tough, and then all your supplies too.  Watch your head, ouch! 

 

 

[Carl S]

This is probably a "Duh" but get an organic respirator and use it if you are going to be in such tight confines. Have Aircraft Spruce give you a copy of the MSDS when you go out to get some. I agree with Norm that going out to pick it up is the better option.

[HopePilot]

Ah, maybe I should just pay Artcraft to do this for me...  I don't own a respirator and by the time I buy one, I'm probably close to even.  I do own the aluminum cleaner and self-etching primer though.

If you're reading this Artcraft, let me know what you think.  Small job?

I also notice that what looks like my trim tube is not covered (the one on the bottom in the picture.  Should I do that as well?

[M016576]

Quote: HopePilot

Does anyone know the brand/name of the green rust proofing coating model/brand Mooney used in the early 80's.  I'd like to redo a couple spots that have flaked off.  Has anyone else done this?

Sorry if I'm calling it by the wrong name.

[Vref]

The green yellow stuff I used is the same they use on Boeing aircraft etc...

it's called BMS 10-11

Use with care this is very chemical stuff not to be used without reading all warnings...

http://msds.ihs.com/partinfo.aspx?partid=7623

http://www.aerosuppliesinc.com/Catalogue/Numerical%20Chapters/Aero%20Supplies%20-%20Catalogue%20MILSPEC.pdf

To my understanding all older mooney's have this flaking off the inside ...I am not worried about this honestly as the metal in general remains shiny so no corrosion is happening there...

My experience is that there are other potential areas (to take care off) not visible only after pullling out some panels or furbishments...

areas to look for:

left pilot lower tubelar structure

passenger tubelar structure

main spar under the seat's

etc..

 

[N201MKTurbo]

The yellow stuff is zinc chromate and toluene, the green stuff is zinc chromate, carbon black and toluene. The green just has more body to it. The zinc chromate forms an electrical anode with the aluminum and any corrosive action will corrode the zinc in the paint before it attacks the aluminum.

Tempo used to make the best paint, but they stopped making it about a year ago. The stuff is quite toxic - most things that work real well seem to be toxic.

The zinc chromate paint will dry in about two minutes. The zinc phosphate paint takes about two days.

 

[Vref]

My neighbour is a metal surface treatement expert (civil engineer)and used to work at SABCA a Belgian company building F16's, Mirages etc under licence from Dassault and Lockheed...(or is it Boeing now...?).

Anyway the purpose of the first layer of primer (yellow) is to have some auto sealant anti corrosive protection this means the paint seals any possible corrosion even after application.... (he started to explain this to me in detail during a neighbour bbq gathering, but I forgot it as I was to deep already in my French red wine.....

[Kwixdraw]

The PTI product is really good and you can call their help line for advice. They sent a rep (family member) out to our EAA chapter meeting to talk up their products and the pros and cons of each.