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  #1  
Old 05-05-2007, 04:14 PM
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Default The Wings are now painted

The wings, ailerons, and rudders are now painted.

The photo doesn't offer true color, the dark gray is a little lighter than what would be found on most primers.

The photo is a snapshot from my network camera:

http://www.iflyez.com/WaitersWebCam.shtml

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Old 05-05-2007, 04:22 PM
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Quote:
Originally Posted by Waiter View Post
The wings, ailerons, and rudders are now painted.
How close are you to flying again?
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  #3  
Old 05-05-2007, 05:56 PM
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Hopefully by the end of summer

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Old 05-05-2007, 07:34 PM
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looks GREat - hope to look at it soon
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Old 05-05-2007, 09:29 PM
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Man....that is one great looking bird!
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Old 05-06-2007, 11:20 AM
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Question......are you going to paint a false canopy on the bottom of the fuselage?
I'm really looking forward to a picture of it assembled.
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  #7  
Old 05-06-2007, 02:05 PM
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No canopy on the bottom. But that would be the ultimate in Camo.

The entire bottom, wings and fuselage, will be painted a very dark gray. You can see this on the bottom of the fuselage in the photos. Except for the bottom of the canard, it will be very light gray, almost white.

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  #8  
Old 05-07-2007, 11:19 PM
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I was looking at another Long EZ this weekend with downdraft cooling. His paint scheme had a light gray (although not camo) top with red accents. What struck me about his plane was how hot the light gray painted parts got. That portion was much warmer than the red or white paint. In fact, you could not keep your hand on the gray. The red, surprisingly was only mildly warmer than the white, despite the placement on that heat-color chart.

-- Len
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Old 05-07-2007, 11:54 PM
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Here's the plane in question. I thought I had a front view, but apparently my camera thought otherwise. Notice that the gray is not very dark at all.



-- Len
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Old 05-08-2007, 01:59 AM
Ron Springer Ron Springer is offline
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Where exactly did you touch it? Was it back near the cowling and possibly still warm from flight?

To be fair, both places you touch should have the same angle to the sun. Red on the side couldn' be compared to gray on top. And, they should have the same heat transfer paths too. For instance, if the gray was backed by foam and the red was just layers of glass forming an air scoop, then that would not be a fair comparison.
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  #11  
Old 05-08-2007, 03:17 AM
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http://www.cirrusdesign.com/WebServi...?m=16&c=4&s=19

i really like that scheme alot with the nice "pinstriping" in between the colors
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  #12  
Old 05-08-2007, 08:40 AM
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Is it a matt gray vs a gloss red?

Where the paints the same brand or chemical? Different materials have different infrared vs visible properties. I have heard about special black paint that absorbs less infrared than special white paint.
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Old 05-08-2007, 10:37 AM
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I touched the back cowling above the engine, but it was at least six hours after it's previous flight. Both sections were at the same relative angle to the sun. Another guy there was feeling the paint and called this to my attention.

I too thought about the differences in pigment composition and the rejection or absorption of infrared. This is likely the case, and I suspect that it would be best to conduct your own temperature tests with actual paint, rather than just taking the color-heat chart as gospel. I didn't get to ask the owner if they were the same type of paints, but the red seemed to have a higher gloss than the gray.

-- Len
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  #14  
Old 05-08-2007, 11:59 AM
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Spectral reflection (glossy) vs diffused (matte or flat) makes a big difference in IR absorption.

ALSO

Color pigment makes a difference, i.e. it might be gray to visible light, but its white to IR.

I ran several "sun light" tests on my gray and didn't see a significant increase compared to white.

I'll repeat these test this weekend if it gets sunny out.

Waiter
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  #15  
Old 05-08-2007, 12:16 PM
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Quote:
Originally Posted by levansic View Post
... and I suspect that it would be best to conduct your own temperature tests with actual paint, rather than just taking the color-heat chart as gospel. -- Len
Great advice, I'm gonna do mine in Scottsdale AZ, in august, on a 118F degree day, with the sun shining
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