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Heads and Rotor Blades Heads and Rotor Blades Discussion


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Old 11-07-2011, 11:00 AM   #1 (permalink)
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Default Spray paint main rotor blades?

Thinking about spray painting my main rotor blades.

Is this a bad idea? Do you guys think it will affect the weight/air flow of the blades?

Anyone done this before? What are your thoughts?
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Old 11-07-2011, 11:09 AM   #2 (permalink)
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I did it with spray paint from a can. Worked just fine.

Just rough em up a bit with some fine sandpaper, prime, and paint. Don't forget to check for balance. If you lay down the paint nice and thin, you should be close or right on balance.

Check the Paint forum. While they mostly do Canopies, they do blades from time to time and they can give you more hints.
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Old 11-07-2011, 12:15 PM   #3 (permalink)
 

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I use clear lacquer to balance blades all the time . I would however shy away from using primer as it is 3x heavier than paint. As along as you balance them correctly after you paint them you will be find , it does nothing to the blades but adds color and a very little weight.
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Old 11-07-2011, 01:12 PM   #4 (permalink)
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Always prime the blades first with etch primer, nice thin coat, makes the colour coats bond to the glass/carbon, particularly as they flex, then colour, and clearr, if any out of balance, a fine laquer coat usually balances, even a fine polish can knock a gramm off the weight, just done these big bu***rs.




PRIMED, 2 COLOURS AND CLEARCOAT. balanced perfectly, EASY
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Old 11-07-2011, 02:32 PM   #5 (permalink)
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So just spray painting the blades without any priming first won't work? The paint won't stick?
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Old 11-07-2011, 02:40 PM   #6 (permalink)
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In my experience with painting, 30 years, i would NEVER NOT prime, also without primer, you can get many kinds of blemishes and paint defects, but hey, what do i know.
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Old 11-07-2011, 02:49 PM   #7 (permalink)
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I am lazy and trying to see if I can spray paint the blades without extra work.

Do you think this will work? Sounds like no priming needed.

http://www.krylon.com/products/fusion_for_plastic/
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Old 11-07-2011, 04:57 PM   #8 (permalink)
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The CF blades are essentially carbon fibers encased in epoxy, it may work.
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Old 11-07-2011, 07:38 PM   #9 (permalink)
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Hey have you done 1st your maden flight of that bird yet?
Quote:
Originally Posted by satsuma View Post
Always prime the blades first with etch primer, nice thin coat, makes the colour coats bond to the glass/carbon, particularly as they flex, then colour, and clearr, if any out of balance, a fine laquer coat usually balances, even a fine polish can knock a gramm off the weight, just done these big bu***rs.




PRIMED, 2 COLOURS AND CLEARCOAT. balanced perfectly, EASY
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Old 11-07-2011, 07:41 PM   #10 (permalink)
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If you have access to automotive flex agent, more the better. I have used flex agent to paint urethane car bumpers to allow flexing of the paint. It also promotes better adhention of the paint.
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Old 11-07-2011, 08:04 PM   #11 (permalink)
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No problems at all!
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Old 11-08-2011, 11:18 AM   #12 (permalink)
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I'm lazy just scuffed the blades with a 3M pad cleaned them then hit them with light coats of Model Master grey till they covered.. Balanced and flew.
Mike
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Old 11-08-2011, 02:15 PM   #13 (permalink)
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Haha.. That makes 2 of us.
Did you put a clear coat on top of it after the paint?
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Old 11-08-2011, 04:14 PM   #14 (permalink)
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Nope figured I could always touch them up if necessary.
Mike
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Old 11-08-2011, 05:40 PM   #15 (permalink)
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Man you guys get fancy with blade painting...I scuff and use Model Master acrylic and a brush...real easy getting perfect balance that way
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Old 11-09-2011, 02:26 AM   #16 (permalink)
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Any of you guys got a good way of mounting the blades for painting?
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Old 11-09-2011, 02:55 AM   #17 (permalink)
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Oh dear to get a scale finish does require SOME work guys
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Old 11-09-2011, 06:09 AM   #18 (permalink)
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Quote:
Originally Posted by Hank79 View Post
Any of you guys got a good way of mounting the blades for painting?
I fashioned a music wire hook to hold mine while painting.
Mike
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Old 11-09-2011, 06:15 AM   #19 (permalink)
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Quote:
Originally Posted by satsuma View Post
Oh dear to get a scale finish does require SOME work guys
It's a point of view on just what scale is. . Is it a hanger queen or a flying subject? Mine have always been green with guns ( with the exception of my Seahawk which is grey). So a blemish here or there is scale and it takes a lot of work for me just hold the can just right to get the proper effect but at 25 feet flying no one can tell anyway.
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Old 11-09-2011, 10:11 AM   #20 (permalink)
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No point building them if you don't fly them, but i agree that military birds don't have to look so clean and smooth if thats the word, corporate birds are on a different level as most tend to get very well looked after to keep the company image up, so a model of one of those does require more effort let's say.
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