53C corrosion control

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VernH
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Joined: Wed Jan 04, 2017 8:49 pm

53C corrosion control

Post by VernH »

I have the tail feathers off of 53C, stripping the old paint to clean up the corrosion under what was left of the paint. In the areas where the paint was lifting there was oxidation which is cleaning up pretty well with scotch bright pads. I am planning on washing the panels with soap and water and then acid wash to remove the rest of any residue. Would you anodize the effected areas and then prime or use a self etching primer? Other options?

Thanks
Fly safe!

Vern
1950 C-170A N5453C sn 19487
Based in Pensacola, FL. 82J
Dennis
Posts: 37
Joined: Sun Feb 06, 2005 8:01 pm

Re: 53C corrosion control

Post by Dennis »

Alodine 1201, then Alumaprep, a 2 part epoxy primer and colour of your choice at your local paint shop. Cessna is a great place for aluminum, preparation and paint requirements. Your A&P can help with painting and balance check of your control surfaces and make the appropriate log entries.
bagarre
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Joined: Thu Sep 30, 2010 11:35 pm

Re: 53C corrosion control

Post by bagarre »

Dennis wrote:Alodine 1201, then Alumaprep, a 2 part epoxy primer and colour of your choice at your local paint shop. Cessna is a great place for aluminum, preparation and paint requirements. Your A&P can help with painting and balance check of your control surfaces and make the appropriate log entries.
Dont you Alumaprep first and then alodine? The prep is phosphoric acid to clean the metal and the alodine is a chromate conversion to passivate it.
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cessna170bdriver
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Re: 53C corrosion control

Post by cessna170bdriver »

bagarre wrote:
Dennis wrote:Alodine 1201, then Alumaprep, a 2 part epoxy primer and colour of your choice at your local paint shop. Cessna is a great place for aluminum, preparation and paint requirements. Your A&P can help with painting and balance check of your control surfaces and make the appropriate log entries.
Dont you Alumaprep first and then alodine? The prep is phosphoric acid to clean the metal and the alodine is a chromate conversion to passivate it.
Correct David, alumiprep, Alodine, primer in that order.
Miles

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VernH
Posts: 84
Joined: Wed Jan 04, 2017 8:49 pm

Re: 53C corrosion control

Post by VernH »

Thanks guys. Awesome as usual!
Fly safe!

Vern
1950 C-170A N5453C sn 19487
Based in Pensacola, FL. 82J
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