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  #1  
Old 11-20-2013, 09:13 AM
jsenft jsenft is offline
 
Join Date: Aug 2013
Location: Burlington, WI
Posts: 206
Default Frosted Windshield

Sorry, not really an RV-12 specific question. After my plane has sits overnight I get frost on the windshield. Currently, I start the engine and turn the plane into the sun to melt the frost burning fuel. Can anyone recommend a spray that I can use to defrost the windshield without damage?

P.S. Move to Florida is not an option for my wife.
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  #2  
Old 11-20-2013, 09:25 AM
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DonFromTX DonFromTX is offline
 
Join Date: Oct 2010
Location: La Feria Texas
Posts: 3,823
Default

Strange. I don't seem to ever have that problem
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  #3  
Old 11-20-2013, 10:20 AM
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N941WR N941WR is offline
 
Join Date: Jan 2005
Location: SC
Posts: 12,887
Default An ounce of prevention?

Can you use a lightweight canopy cover when parking overnight? That doesn't do much for the frost on the wings but it will definitely keep the frost off the canopy.
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  #4  
Old 11-20-2013, 03:06 PM
Beancounter Beancounter is offline
 
Join Date: Oct 2007
Location: Canada
Posts: 100
Default Frost

I use automotive windshield washer fluid in a garden sprayer on the wings my 9. Some formulations work much better than others which may have to do with the alcohol concentration. I don't know what the RV12 windscreen is made of, so use with caution.
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Last edited by Beancounter : 11-22-2013 at 11:15 AM. Reason: clarity
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  #5  
Old 11-20-2013, 11:12 PM
Wayne Gillispie Wayne Gillispie is offline
 
Join Date: Apr 2009
Location: USA
Posts: 1,499
Default

I use 91% isopropyl alcohol in a 1 qt spray bottle. Take precautions as it is a fire hazard. Search Amazon if you need gallons or higher concentration. Ethyl alcohol appears to be less harsh on plexiglass and can be easily obtained.
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Last edited by Wayne Gillispie : 11-21-2013 at 08:05 AM.
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  #6  
Old 11-21-2013, 04:43 AM
kiwipete kiwipete is offline
 
Join Date: Oct 2007
Location: Birmingham United Kingdom
Posts: 434
Default Wings?

If there's Frost on the windscreen please make sure there's non on the wings and tail as well. I've seen the results of people trying to takeoff with frost on the wings and it wasn't pretty!

Peter
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  #7  
Old 11-21-2013, 06:07 AM
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N941WR N941WR is offline
 
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Default

I was under the impression that alcohol will cause crazing on the canopy over time. Is this not true?
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Build the plane you want, not the plane others want you to build!
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  #8  
Old 11-21-2013, 06:52 AM
terrykohler terrykohler is offline
 
Join Date: Jan 2005
Posts: 1,044
Default I Try to Stay Away From Anything That "Might"...

Quote:
Originally Posted by N941WR View Post
I was under the impression that alcohol will cause crazing on the canopy over time. Is this not true?
http://www.eplastics.com/Plastic/Pla...iglass-Acrylic

Terry, CFI
RV9A N323TP
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  #9  
Old 11-21-2013, 06:57 AM
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MarkW MarkW is offline
 
Join Date: Sep 2011
Location: Edgewater, FL. X50
Posts: 1,176
Default

Bill,
Since you asked.
I had **** on my canopy from lack of protection during construction. I looked for a solvent that would handle the mess without damage. I was told MEK would work but before using I checked it out. I found a great website that shows Plexiglass chemical compatability.
http://www.eplastics.com/Plastic/Pla...iglass-Acrylic
I used MEK anyway and found only slight reaction. I was able to polish out the haziness with Novus.
Short periods of Alcohol use look OK in cooler conditions but the RV-12 does not use Plexiglass so beware.

As Bill originally mentioned, keeping the moisture off before it turns to frost would be the best bet.
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  #10  
Old 11-21-2013, 07:31 PM
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Mark Dickens Mark Dickens is offline
 
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Location: Collierville, TN (KFYE)
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Default

You might try propylene glycol aka "pink stuff" or otherwise known as aircraft deicing fluid. Go to Walmart and pick up a gallon of boat or Rv antifreeze...not auto coolant (ethylene glycol), but propylene glycol. It's non toxic. Spray it on the windshield and see if that helps.
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Last edited by Mark Dickens : 11-21-2013 at 07:33 PM. Reason: Fixed spelling
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