BLUE PRIMER instead of Zinc Chromate or Interior Green on a Vultee tra

[Jérome the frenchie]

Hello,

a friend is restoring a real Vultee BT-13A.

I am very surprised by all the inner surfaces.

They are BLUE.

Not Zinc Chromate (yellow) nor Interior Green (green), nor Salmon Pink like on the early Birdcage, but BLUE.

Was it an usual color for the primer or is it an exception ????

I have never seen a scale model with this color. Are modelers ignore it ?

Here a sample :

[HOLMES]

Jerome,

I think they banned ALL other Zinc Chromates as it did not meet with the

Carcinogen requirements.....Since July 1st 2007,chromate coatings with carcinogen hexavalent

have been outlawed for many industries that used it , which also included the motr industry.

The new coating replaces the former yellow chromate ( and pink etc) one to comply with

new leagl requirements introduced to eliminate carcinogenic coatings...

Hence the new blue zinc coating....as you said that zinc coatings are applied to prevent rust

and acid attack... Hence you see the blue zinc chromate which as you know isa mixture of chromatic

acid and other additives...It is possible that the picture you posted has had that done...?

Does that answer your query...

HOLMES.

Edited December 20, 2008 by HOLMES

[woodbeck3]

uhh Homes this was built way before 2007. I believe this was from the mid '30's.

[Julien (UK)]

There is a good thread in interior colours here: http://www.arcforums.com/forums/air/index....howtopic=129502

Julien

[HOLMES]

uhh Homes this was built way before 2007. I believe this was from the mid '30's.

Sorry I stand corrected..!