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HelicopterMain Discussion › Spraying a canopy
07-12-2008 10:14 PM  9 years agoPost 1
Joe Tanto

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Malta

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Can anyone tell me if I can spray a canopy and what kind of spray I have to use?

thanks
Joe

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07-12-2008 10:46 PM  9 years agoPost 2
ThunderRobo

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Toronto, Canada

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here are the steps (Joe, -Canopy-FX)

# Wash the canopy with warm soapy water (mild dish soap is OK)
# Wetsand entire canopy with 600 grit sandpaper (Keeps the dust down)
# Patch all the seams and dents you can find with Red Bumper Putty (Let dry 2 Hrs)
# Wetsand all the places you had to patch with 600 grit sandpaper (Let dry)
# Spray entire canopy with Adhesion Promoter (Let dry 30 min)
# Spray entire canopy with Adhesion Promoter (Let dry 30 min)
# Spray entire canopy with Flexible Primer (Let dry 30 min)
# Spray entire canopy with Flexible Primer (Let dry overnight)
# Wetsand canopy with 400 grit sandpaper (Pressing very lightly, if you hit the adhesion promoter your paint might peal)
# Fill all pinholes with red bumper putty (Let dry 30 min)
# Wetsand canopy with 600 grit sandpaper
# Spray entire canopy with Flexible Primer (Let dry 30 min)
# Spray entire canopy with Flexible Primer (Let dry overnight)
# Wetsand canopy with 600 grit sandpaper (Repeat the last 3 steps until the canopy is smooth, and pinholes are gone)
# Let the canopy dry for 2 to 3 days (Poly bodies only, The paint needs to cure to the body)
# Wipe the canopy down with a wax and grease remover (Glow Super-Klean 1705)
# Wipe the canopy with a tack rag to remove all dust and crap (Detro 1200 Gold)
# Mix and shoot the base color (House of Color BC-26)
# Repeat until canopy is uniform in color (Let dry over night)
# Tape out all the graphics using low tack tape and pin striping tape (3M UPC-051131-06404)
# Mask off everything that you do not plan to paint (Over spray goes everywhere)
# Wipe the canopy with a tack rag to remove all dust and crap (Detro 1200 Gold)
# Spray the color in several light coats not one heavy one (If its too heavy the paint might bleed under the tape)
# Let the paint dry 2 - 4 hours (Repeat the last 5 steps for each color being shot)
# Let the painted canopy dry overnight before applying the clear
# Use the wax remover to spot clean any places that some tape glue left behind (Dont rub too hard this will take the paint off)
# Wipe the canopy with a tack rag to remove all dust and crap (Detro 1200 Gold)
# Spay the clear (if you don't have a paint booth, spay it on a calm day, let dry 24hrs)
# Wetsand the canopy with 1500 grit sandpaper (Lots of water and no elbow grease)
# Wipe the canopy with a tack rag to remove all dust and crap (Detro 1200 Gold)
# Once dry spray another coat of clear (Let dry 24 hrs)
# Repeat the last 3 steps as many times as you like (I do it 3 times, VERY NICE SHINE)
# Wetsand with 2000 grit sandpaper (Lots of water no elbow grease)
# Polish the canopy with a Fine Cut Cleaner (Meguier's No2)
# Polish the canopy with a Glazing Compound (Meguier's No7)
# Polish the canopy with a Swirl Remover (Meguier's No9)
# After 2 weeks the clear can be waxed to remove all the final scuffs (What ever you use on you car will work)
# If you got this far and forgot to drill the holes try not the scream to loud
# Put a piece of tape where you need to drill then poke a small hole with a push pin
#Then slowly drill the correct hole

Use automotive grade paints, clears, primers. Treat it like a car. dupont, HouseOfKolor, PPG ect.

Derek
Da' kid with the toyz!
"Time for some Muzak!"

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07-13-2008 01:52 AM  9 years agoPost 3
airboss

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OC ,california

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using the same prep as above you may also purchase spray paints at your LHS or the auto parts store.paint is only as good as the prep.

Urukay HPS3 KSE 700 HPS3

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07-13-2008 05:29 AM  9 years agoPost 4
Joe Tanto

rrNovice

Malta

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Canopy

thanks for your advise

Joe

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07-13-2008 06:40 AM  9 years agoPost 5
pariah

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South Jordan, UT - United States of America

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I'd also look at the tips from Bill @ Arizona Heli:

http://www.arizonaheli.com/finishing.htm

Part of it depends on whether you're using a fiberglass canopy or a plastic one. (Plastic canopies need adhesion promoter).

But the bottom line is that you can spray it with krylon or rustoleum rattle cans if you like the colors. Dupli-color is another option.

But the final step is a good clearcoat - everyone I've seen suggests a 2-part clear, as a 1-part clear isn't fuel-proof (which isn't much of a problem for electric machines).

The most common is urethane clear (used in auto paint). The stuff is dangerous to use (the warning label says it will cause cancer) - which is why a few of the pro painters suggest you just take it to an auto body shop to get cleared; they have the proper safety equipment.

I've also been in a discussion where I heard of a 2-part clear made by Nelson hobbies that is also supposedly nitro-proof when used properly, and it's safer to use.

Either way, don't skimp on the surface prep - ie. priming & sanding. On the canopies I've painted, I probably spent as much time sanding it as everything else combined.


--
The last thing I want in a heli is a few loose screws.

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