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Are these notes from the Samba instructions only for the unpianted carbon fuse and top of wings?
"Model can not stay long in the sun without silver protection covers (including fuselage) to prevent excessive heating up of the model as there could appear some deformations of model parts when model is overheated or the surface could get distortions." What are the various weight/fabric configurations and expected all up weight? What version(s) is Soaring USA bringing to the US? Stefano |
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Years back our planes came with thin glass on carbon (or they were glass structure). And the color were mostly white (or anyway not very dark). And there was thicker layer of paint... All this gave protection to sunlight. |
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But be warned. It is not so much about ambient temperature, it is direct solar energy that heats the wings. Given a bright enough sun shine, one can damage wings at 20C temperature. |
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Perfections
Hi Guys,
Looks like there may be a Pike Perfection available on a shipment that will be in our shop next week. These models are very, very nice, and hard to come by. If anyone has an interest in one, please email me; bob@soaringusa.com Thanks, Bob |
Latest blog entry: 2015
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No black on models for me (at least not at the top). Cheers Thomas |
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Last edited by wakumann; Jul 02, 2012 at 11:48 AM.
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I have wings with no paint, they get hot in sunlight... Something to do with black body radiation...
Thinking of painting the wings pink just like Philip kolbs new prestige.... According to Phillip you then shouldn't get any black body radiation even though the pink is pretty hot, just like him... |
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I recall there was research done into the colour of motor cars and heat absorption. Apparently almost any colour of the spectrum that isn't white (including silver) results in almost as much heat absorption as black. So, white's the only colour to go for if your'e concerned about this issue. Probably explains why most cars in South Africa are white.....
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Hi Cris
I have some Models with black /red stripes, just checking by hand the black area is significantly hotter. Anyway if I dont have bags with me to cover so I stuff them verticly into the next bushes. Cheers Thomas my next model will be a white/pink one , possibly I will spray paint the pink to red, lol |
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Last edited by wakumann; Jul 14, 2012 at 02:42 PM.
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Hi Thomas, yeah, I dunno. It's just something from way back that stuck in my brain - maybe it's hogwash? I can sure imagine black parts of a plane radiating more heat after a while, it seems to make sense doesn't it? I suppose the message is that white is best if your'e looking for specific protection. Isn't that why full-sized gliders are usually white?
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Excactly, based on the tech product data of epoxies used
so it only counts only for Fibreglass gliders, the Pilatus and other metal ones could be any color. OT out back to topic seeing a Perfection on a slope, nice floating Machine,.... but IMO it makes only sense for competion, for 'slope freestyle' not so much fun. Cheers Thomas |
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Last edited by wakumann; Jul 14, 2012 at 02:43 PM.
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