Focus Canopy Painting

[wgalligan]

Ohh..I see... that dimple in the top of the canopy is there for aerodynamic purposes.

Heh!heh!


> This isn't a great shot, but is one example of a painted canopy and the > Texas heat.
> 
> http://www.fototime.com/5713BDBAD638E26/standard.jpg
> 
> I had to replace this with a clear canopy.
> 
> Keith
>   ----- Original Message ----- 
>   From: s.vannostrand at kodak.com 
>   To: discussion at nsrca.org 
>   Sent: Friday, March 21, 2003 8:56 AM
>   Subject: Re: Focus Canopy Painting
> 
> 
> 
>   90 degrees?  That's not a hot day.  2 years ago we had 65 days over > 100.  It's routinely 103-105 degrees on the blacktop and the sun is at > level 6.  Most epoxys have glass transition at 120 degrees and get > rubbery soft.  I've seen fiberglass cowls with thumb holes in them > because they were soft when the owner grabbed the plane to apply the > starter.  It's during July and August that you guys get back at us > Southerners for all the bragging we do about weather at this time of > year. 
> 
>   --Lance 
> 
> 
> 
>        "GeorgeF." <av8tor at flash.net> 
>         Sent by: discussion-request at nsrca.org 
>         03/21/2003 08:30 AM 
>         Please respond to discussion 
> 
>                
>                 To:        discussion at nsrca.org 
>                 cc:         
>                 Subject:        Re: Focus Canopy Painting 
> 
> 
> 
> 
>   >
>   >
>   >Trust me, if you paint it black and set it out in the sun it will get > HOT, 
>   >some plastics may handle it better than others, but it will get hot, > I'll 
>   >bet so hot you can't touch it.  I've done it and got away with it, > but 
>   >I've also seen them melt/deform so be careful.  The shame of it is > that I 
>   >like the looks of a black canopy, both on the ground and in the air, > but 
>   >having seen a couple deform I've decided against black.  Ya' paints > yer' 
>   >canopy and ya' takes yer' chances.
> 
> 
> 
>   Not sure what the thickness of the plastics used were or if they were > being 
>   painted on the inside or outside but mine did NOT get hot to the > touch.
> 
>   Mine were painted on the inside, possibly the fact the sun rays need > to go 
>   through the plastic before hitting the black may deflect the rays > causing 
>   them to hit at an angle other than 90 degrees.  This deflection will > reduce 
>   heat build up.  But I've done about 12 or so planes that way, they've > set 
>   in full sunlight on 90 degree days and have yet to have one deform in 
>   anyway....
> 
>   George
> 
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> 
> 
> 
> 


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