question on repainting over Ultracoat

[davegee]

I might be painting a friend's Hangar 9 or Top Flite Corsair or P-47D that is covered with Ultracoat. Does anyone have experience painting Ultracoat, like with Tamiya spray paints or others? My concern before I do this is if there is any flaking off of the paint through the flexing the plane does in flying it. Especially concerned with any areas that might have Ultracoat over an open bay like wing or tail areas that are just ribs. Thanks

[doctormike]

I have experimented with this. No luck. Spray paint will not adhere to it.:Crying2: Doc

[redtwilight]

I have seen some planes airbrushed with automotive paints right on the monokote/ultracote. I am not sure of how long it has lasted though.
The key to it will be in the preparation.

I have used some spray paint on a couple of my early Hangar 9 PTS P-51 trainers.
Warning though that this is not fuel proof unless using fuel proof paints and clears.

I first made sure all the wrinkles and sags were out of the covering. Then I wiped the covering with denatured or rubbing alcohol to clean any grease and oils off.
Now on to paint. I used self etching primer as a base coat for the paint. The first couple of layers were sprayed lightly followed by heavier (not too heavy) coats.
After the recommended drying time I then sprayed on the color. On the 2 planes I painted like this I used the paint that is for plastic. Camo OD Green in this case.
So far the paint is still there looking just as good as when it was first sprayed. The only areas that hadn't fared well are the areas were the nitro residue and exhaust have been.

[MikeT]

After shrinking the covering scuff the surface with a scotch brite pad or fine steel wool this gives the primer something to adhere too. Before priming clean well with alcohol to remove any oils or grease. Primer wet sand than clean again than paint, .

Mike

[ElizabethHurd]

I have seen some planes airbrushed with automotive paints right on the monokote/ultracote. I am not sure of how long it has lasted though.
The key to it will be in the preparation.

I have used some spray paint on a couple of my early Hangar 9 PTS P-51 trainers.
Warning though that this is not fuel proof unless using fuel proof paints and clears.

I first made sure all the wrinkles and sags were out of the covering. Then I wiped the covering with denatured or rubbing alcohol to clean any grease and oils off.
Now on to paint. I used self etching primer as a base coat for the paint. The first couple of layers were sprayed lightly followed by heavier (slice master) coats.
After the recommended drying time I then sprayed on the color. On the 2 planes I painted like this I used the paint that is for plastic. Camo OD Green in this case.
So far the paint is still there looking just as good as when it was first sprayed. The only areas that hadn't fared well are the areas were the nitro residue and exhaust have been.

Proper surface preparation prior to painting is key. I would add fuel resistance to areas near the exhaust.