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Old 07-04-2011, 07:50 PM   #29
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1974 31' Sovereign
Ottawa , ON
Join Date: May 2008
Posts: 11,169
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Originally Posted by fwsieft View Post
We have a 1975 27' airstream. Could someone tell us how to fix cracks in the end caps they are really MAJOR.
Well, I just tried the Google version of the Search option, one of the links in the top blue horizontal bar and got this list.

Have a read through there, might help...

If it's to be, it's up to me.
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Old 07-25-2011, 06:09 AM   #30
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1991 25' Excella
1974 27' Overlander
Plainfield , Wisconsin
Join Date: Aug 2010
Posts: 8
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Do NOT use the clearcoat from Krylon Fusion paint after painting. I painted my endcaps using Krylon Fusion dover white gloss paint. I waited 7 hot days and then applied the Krylon clearcoat. Disaster followed - in spots, my white paint faded to light yellow. I wet sanded one of the spots and found that the clearcoat had yellowed the top coat of white paint. The under coats were still nice and white. I found on other sites where kids had painted their motorcylce helmets and four-wheelers white only to wreck their creations with the clearcoat. After reading the msds, clear coat is just solvents. I had preped correctly and wet sanded everything before starting. Story short- do not use the clearcoat.

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Old 08-16-2011, 02:52 PM   #31
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1987 29' Sovereign
Hinsdale , Illinois
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Hi Splitrock, I like your train of thought, but what did you figure out to be step 2? Did you replace them or figure out another fix? Thanks so much... Lisa
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Old 08-16-2011, 03:52 PM   #32
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Sioux Falls , South Dakota
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Originally Posted by lisapye View Post
Hi Splitrock, I like your train of thought, but what did you figure out to be step 2? Did you replace them or figure out another fix? Thanks so much... Lisa

Hi Lisa,

If you followed my blog you saw I had the rear end cap out to heat and roll out an exterior skin dent. The rear cap didn't have any cracks, just yellowed, so I put it back in with no problems. I expect at a later date I'll mask it off and paint it.

The front cap has that molded storage cabinet with the tambour doors. It's stress cracked but it's fine and functional. To paint that one I'd have to remove it, fiberglass the back side, fill the cracks, and reinstall it. I may do that. I had thought of just applying headliner material on the front cap.

My plan was to do all the repairs and maintenance, seal the exterior seams, install a new air conditioner, new power roof vents, replace all the appliances, replace the plumbing, and install new fixtures before I installed new floor covering and built new wall panels for the center bath.

Now I'm building cabinets, new closets, new countertops, and installing new furniture. Next season I'll strip the exterior, replace the awning, and add rock guards. Dealing with both caps will come later in my project. Maybe not even next year.

My goal was to have the trailer ready to take a little trip this fall but my wife says she's not interested in being associated with the trailer until it's stripped and buffed. That buys her another year and lets me use the trip money for more shop tools. :-)

Click on the link to see a picture of the Sioux River falls near my home.
Eastern South Dakota is very pretty with hills, rivers, and trees.
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Old 03-02-2013, 09:00 AM   #33
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1976 31' Sovereign
Snoqualmie , Washington
Join Date: Feb 2012
Posts: 21
Images: 40
I'm replying to an old post, but because I've found a way to clean and brighten my old yellowish ABS plastic AND it works!!!
Peroxide Method (for ABS plastic)

You Will Need:

  • Hydrogen peroxide
  • Oxy laundry booster
  • Sunshine or UV light
  • Water
  • Bucket or large bowl
  • Rubber gloves
  • Goggles
Steps to Whiten the Plastic:

  1. Begin by protecting yourself with rubber gloves and goggles.
  2. Fill the bucket with hydrogen peroxide.
  3. Add ¼ teaspoon of Oxy laundry booster for each gallon of peroxide.
  4. Place the yellowed plastic pieces into the solution and allow them to soak.
  5. The soaking time will vary with most pieces whitening in 2-6 hours. The mixture will last for up to four days before it needs to be replaced. Retr0Bright has also developed a way to make this into a gel that can be spread onto the plastic. This is especially helpful for larger items.
  6. Set the items under a UV light or out in the sunshine.
  7. When the item has reached the desired whiteness, remove and rinse thoroughly to remove any remaining cleaning products.
  8. If necessary, wash with dish detergent and water.
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Old 03-04-2013, 03:47 AM   #34
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1977 31' Sovereign
1963 26' Overlander
1989 34' Excella
Johnsburg , Illinois
Join Date: Jul 2005
Posts: 2,922
removing or neutralizing yellow stains

The common yellowing of the ABS plastic endcaps can have several different causes. The remedies can be quite different.

The poster above is addressing the discoloration that has been caused by the degradation and yellowing of the "B" rubber component of the ABS plastic. The bleaching described should be effective in restoring the color. It, however, does not restore the ductility to the plastic and may reduce it slightly. When the plastic becomes brittle with age, cracking, due to flexing, as the trailer goes down the road, will result. You need to stop the cracks from propagating by drilling a small hole at the end of the crack.

If the stains are caused by permeation of tobacco fumes, a very though cleaning with very strong detergents, which can permeate into the plastic, is a better choice.

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