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HomeAircraftHelicopterPainting › Paint coming off!
11-10-2005 01:00 AM  12 years agoPost 1
Billingsnutz

rrApprentice

Summerville South Carolina/Mobile Alabama

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I decided to try to paint the new Raptor 60 canopy and the paint just peels off. I washed it thoroughly, then wiped it with alcohol and then painted it. I even bought the paint thats fuel proof. What gives??

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11-10-2005 01:03 AM  12 years agoPost 2
Furious Predator

rrProfessor

Kitchener, Ontario, Canada

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did you sand it? even if the body is plastic you should still rough it up. 400 grit and wet sand it, you shoudl have better luck then. i painted plastic bodies before, with no trouble, never had any paint peal off...yet.

Shawn
Team Leisure-Tech
Team HelixRC

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11-10-2005 01:15 AM  12 years agoPost 3
Billingsnutz

rrApprentice

Summerville South Carolina/Mobile Alabama

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I'm currently sanding it at the moment trying to get the jibblets of old paint off. I'm trying to decide if I should have one more go at with your method or just put the stupid stickers on it and leave it as is. We'll see I guess.Thanks though.

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11-10-2005 01:25 AM  12 years agoPost 4
CK_

rrApprentice

Redondo Beach, CA

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Go to the auto parts store and get some bumper primer and adhesion promoter, both in a spray can. Sand the canopy, clean and degrease it, and apply the adhesion promoter per the insrtuctions. I think you need a few coats. After the adhesion promoter, prime the canopy with the bumper primer, wet sanding between coats until you get full coverage. Then paint and clear.

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11-10-2005 01:26 AM  12 years agoPost 5
Billingsnutz

rrApprentice

Summerville South Carolina/Mobile Alabama

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I just got a pm from someone that said just about the same thing. So if two are saying... must be the right way! Going to AutoZone asap!
Thanks guys!

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11-10-2005 01:36 AM  12 years agoPost 6
George Matthews

rrElite Veteran

N.W. Ohio

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Make that three!

George Matthews

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11-10-2005 03:05 AM  12 years agoPost 7
Helibras

rrApprentice

São Paulo, Brazil

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I'm the fourth though.

But plastic painting is always a critical process. It won’t last forever. If you want a great paintjob with good lasting and a better overall canopy buy a fiberglass one.

A fellow over here does a good one that surely can protect the electronics better and I saw one RR advertisement a company that makes them in US. Maybe it worth the price.

My 2 cents...


Gravity... the force to be defeated
Raptor 50SE; Hyper
Vigor CS; OS 91C-Spec MPII

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11-10-2005 07:06 AM  12 years agoPost 8
cessna151

rrVeteran

Missouri... Originally Indiana

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I tried the adhesive and primer method and still had some problems, but oh well. My next body will be from http://www.arizonaheli.com Check it out!

--Eagles may soar high, but weasels don't get sucked into jet engines!--

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11-11-2005 01:52 AM  12 years agoPost 9
Billingsnutz

rrApprentice

Summerville South Carolina/Mobile Alabama

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I think I'm just going to find some full canopy decals. Anyone know of some sites that sell a lot of different choices?

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11-11-2005 02:21 AM  12 years agoPost 10
redwingsfan71

rrNovice

Bradenton, FL

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Adhesion
First off, I'm a professional custom/concept car painter for General Motors and previously for Ford. Dealing with difficult to paint plastics are very common hurdles to jump. The single most important step in painting plastics is using the proper adhesion promoter for the exact type of plastic. Sanding the plastic and priming it gives a mechanical bond, however, a chemical bond is necessary here. If you wish to paint a Raptor canopy, a primer specifically for polypropylene is required. Here are a few I recommend - just do a search for :

1. House of Color AP-01 Adhesion Promoter
2. SEM Flexible Bonding Clear
3. 3M Plastics Repair Adhesion Promoter
4. Fusor Plastics Adhesion Promoter

Any of the above adhesion promoters will specifically tell you that it will adhere to polypropylene. TPO and PP are the two trickiest plastics to paint IMHO, but there are ways around it.

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11-11-2005 08:36 AM  12 years agoPost 11
Climax

rrVeteran

West London, United Kingdom

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Have a look at this post, I'm about to try the technique...

http://www.runryder.com/t204200p1/

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11-11-2005 08:41 AM  12 years agoPost 12
Billingsnutz

rrApprentice

Summerville South Carolina/Mobile Alabama

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Yeah let me know how that works out.

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11-11-2005 08:40 PM  12 years agoPost 13
w.pasman

rrElite Veteran

Netherlands

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I have painted the rap50 canopy with excellent results. Paint still mostly undamaged after several 100s of flights

Here you find my painting instructions and tips

http://graphics.tudelft.nl/~wouter/...g/painting.html

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11-12-2005 07:44 PM  12 years agoPost 14
PaintMan

rrNovice

On a Mountain in East TN

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Go to any automotive paint supplier and tell them you want to paint an UNPRIMED plastic bumper, they will have the products and the steps to get you going.

When painting plastics, a clean surface is the key, like mentioned earlier the chemical adhesion is what you are after. I don't sand my canopies, i use a Gray suff pad and some scuffing gel, then use a plastic surface cleaner, then adhesion promoter, then automotive Basecoat, then clearcoat when I'm done with color.
Paint flexibility is key as well.

here are 2 products I use and have never had any paint come off
they are Sherwin Williams Automotive products

SC159 - this is the plastic surface cleaner in an aerosol can

UPO7226 - plastic adhesion promoter in an aersol can.

Hope this helps

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11-12-2005 07:53 PM  12 years agoPost 15
reddragon

rrElite Veteran

Brooklyn, N.Y.

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I tried the adhesive and primer method and still had some problems, but oh well. My next body will be from http://www.arizonaheli.com Check it out!
I could never understand why some try to paint these polypropylene canopies. The paint job will eventually crack and peel. Even with the best preparation it will not stand the test of time and the elements.
But plastic painting is always a critical process. It won’t last forever. If you want a great paintjob with good lasting and a better overall canopy buy a fiberglass one.

Wayne - Fly it like you stole it! You're in good hands with Runryder!

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11-12-2005 08:43 PM  12 years agoPost 16
AlanR8

rrKey Veteran

Saddleworth near Manchester (UK)

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Get some dayglo vinyl graphics. Problem solved. NOT pretty but you'll be able to see the heli nad will spend more time flying it!

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11-13-2005 06:25 PM  12 years agoPost 17
w.pasman

rrElite Veteran

Netherlands

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I could never understand why some try to paint these polypropylene canopies. The paint job will eventually crack and peel. Even with the best preparation it will not stand the test of time and the elements.
Mine has lasted a long time, a few years and hundreds of flights, showing that a practical paint job can be done. This may of course depend on what you exactly mean by "the test of time" (everyting will be thrown away eventually)

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11-13-2005 06:31 PM  12 years agoPost 18
AlanR8

rrKey Veteran

Saddleworth near Manchester (UK)

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Good response, shows it can be done and obviously done well. I'd still go with the dayglo vinyl though.

Used to fly with a couple of guys in the car body repair business, They always had fancy paint jobs on their helis. However, an unwritten law is that the day you fly with your brand new paint job on your brand new fiber glass canopy, that will be the day you dumb thumb the heli and bury it in the hard bit at the bottom of the sky!

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11-13-2005 08:17 PM  12 years agoPost 19
slider46

rrProfessor

Ocala Florida

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Has anyone tried the lexan paints like they use on the rc cars? That seems very flexable, If it will stick to the poly pro....

Tom..... No "D" flying....

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11-14-2005 01:45 AM  12 years agoPost 20
M`honri

rrNovice

Ogden, Utah

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RC car paint.....
Yes, the parmex er something like that was my first few trys at it and I had no such luck, I've always said that the hardest think about this hobby was painting the canopy. Gooooooosh, ticks me off

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