1978 Trillium Rock Guard Replacement - Fiberglass RV


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Old 08-25-2013, 09:17 PM   #1
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Name: Flat
Trailer: 1978 Trillium 4500
Utah
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1978 Trillium Rock Guard Replacement

Hi All.

I have a 1978 Trillium 4500 that I would like to replace the front rock guard on. Is there a source or recommendation for material to use. I could come up with a couple of possibilities, but no point reinventing the wheel if someone has been down this road.

Thank you.
Flat.
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Old 08-25-2013, 10:01 PM   #2
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Here's a framing idea - I'd probably use a sheet of clear Lexan for the final cover, though.

finished Trillium rock guard

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Old 08-25-2013, 11:03 PM   #3
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Trailer: 1978 Trillium 4500
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Thanks for that Charlie,
I should have been more clear. My rock guard is actually in tact, its just the fiberglass portion that has gone south. Its really brittle and all of the fibers are sticking out. One thing is certain, if you rub against it, you get fiberglass in your clothes.

So the plan is to drill out the detents that hold the frame together, disassemble, and insert new panels. Then I'll reassemble the whole thing.
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Old 08-25-2013, 11:48 PM   #4
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Trailer: 1972 boler American and 1979 Trillium 4500
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Sounds good.
Some have reported that the Grizzly Grip (a thin bedliner type material) they've used on the lower front to cover and prevent chips is a good colour match. You could do both the lower front and rock guard and have it look like they belonged together.
Top it off with the potential production of a replacement rock guard decal and the Zep finish and it'll be looking great.
Have a look at this thread:Looking for Blue Trillium 4500 Stripes or Decals?
And if we get enough pre order interest for tire covers and propane tank orders Tom from TrilliumRV says he will get some made with the blue logos.
Looking for Blue Trillium 4500 Tire or Tank covers? (shameless plug)
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Old 08-25-2013, 11:54 PM   #5
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Originally Posted by flatfendershop View Post
Thanks for that Charlie,
I should have been more clear. My rock guard is actually in tact, its just the fiberglass portion that has gone south. Its really brittle and all of the fibers are sticking out. One thing is certain, if you rub against it, you get fiberglass in your clothes.

So the plan is to drill out the detents that hold the frame together, disassemble, and insert new panels. Then I'll reassemble the whole thing.
You might consider just having an auto body shop clean up and refinish the existing panels - shouldn't cost much to drop another layer of fiberglass on top once they're cleaned up.
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Old 08-25-2013, 11:59 PM   #6
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My rock guard is actually in tact, its just the fiberglass portion that has gone south. Its really brittle and all of the fibers are sticking out.
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Originally Posted by tractors1 View Post
clean up and refinish the existing panels - shouldn't cost much to drop another layer of fiberglass on top once they're cleaned up.
That was my 1st thought, but I was not sure if it would address the brittleness.
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Old 08-26-2013, 01:28 AM   #7
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Smile Trillium rockguard

Welcome to FGRV.

Or you could pop down to Florence, AZ just south of Phoenix and buy a new replacement:

Parts | Trillium RV
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Old 08-26-2013, 05:37 AM   #8
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Welcome to FGRV.

Or you could pop down to Florence, AZ just south of Phoenix and buy a new replacement:

Parts | Trillium RV
Are you sure they are still there? This looks like a US Trillium but has the name of a Canadian manufacturer on the back.
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Old 08-26-2013, 09:02 AM   #9
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Rock Guard Solutions

Here is a solution that I considered for our 1976 1300. This company has opaque acrylic and also ABS in a couple of thickness choices and will cut it to size. Prices seem reasonable. Translucent and Opaque Colored Acrylic Sheets : TAP Plastics
I needed to get our trailer on the road in a hurry, however, and so opted for three sheets of painted aluminum cut to size by a local sign-maker - not the most economical choice but timely. I've added the big Trillium decal from the new company to the center one.
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Old 08-26-2013, 09:16 AM   #10
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Here is a solution that I considered for our 1976 1300. This company has opaque acrylic and also ABS in a couple of thickness choices and will cut it to size. Prices seem reasonable. Translucent and Opaque Colored Acrylic Sheets : TAP Plastics
I needed to get our trailer on the road in a hurry, however, and so opted for three sheets of painted aluminum cut to size by a local sign-maker - not the most economical choice but timely. I've added the big Trillium decal from the new company to the center one.
I work 95% of the time with ABS; be careful with using it outdoors as regular ABS will eventually yellow due to UV. There are grades that are specified as UV resistant for outdoor use - make sure you specify that for your outdoor uses.

Acrylic is an entirely different animal commonly used outdoors.

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Old 08-26-2013, 01:14 PM   #11
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Name: Walter
Trailer: 1976 Trillium 1300; Invertec Falcon 190 class b rv
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Rock Guard Replacement

Recently we were faced with the problem of replacing our rockguard on both front corners of our '76 Trillium 1300.

To have the front repainted at an autobody shop was $500-600 and there would be no guarantee we wouldn't have to do the same thing again in a couple of yrs.

We went with Line-X truck bed finish which cost $200 for both front corners and looks nice to our eyes. It is black on a dark grey bottom half color scheme of the trailer. It looks to be 1/8" in thickness and is a rubbery, bumpy finish which should help deflect rocks.

The Line-X folks were very helpful and carefully taped off the area to be coated according to our design request. Then the area was lighly sanded with 200 gr sandpaper, then the Line-X was sprayed on . The whole process took less than an hour and it was done. We also considered one of their polyurea finishes but it would have been thinner and less flexible to absorb rock hits.

For many, this type finish may not suit their aesthetics or color scheme, as the Line-X comes in limited colors. We are happy with the result. It is highly unlikely we will have to deal with rock chips in this area in the foreseable future.

If there had been any defects in the fiberglass before the Line-X was sprayed on, I would have fixed those first. We had to have the top repainted and one superficial crack repaired. They used an polyester fiberglass epoxy with microfibers for strength, then a bodo like compound to finish the surface before priming and painting.
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Old 08-26-2013, 07:33 PM   #12
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This post sounds exactly what you might want to do: Trillium rockguard/awning refurbish
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Old 08-26-2013, 07:47 PM   #13
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Name: Randy
Trailer: 1980Trillium 1300
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...Here is my solution of rock-guard on Trillium 1300: Sand the ugly chipped paint area down and re-fill it with body filler. Any crack would be repaired by fiberglass mess and resin. After sanding all nicely, spraying a coat primer, then paint a thick coat of automobile rubber paint( when it 's dried, it becomes rubber) for under-neath autos, 50bucks a gallon, using big brush to paint. After all, I install a pipe storage from a big PVC pipe right in front,. Now I would say my rock guard is really guarding something. Enjoy the photo...
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Old 09-01-2013, 11:28 PM   #14
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Name: Flat
Trailer: 1978 Trillium 4500
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These are all great ideas. Thank you for your input. I've put my name on the list for new decals from Trillium, so we'll see if that pans out.

My panels are pretty fuzzy with fiberglass, I'll try gently sanding them down and see if the surface looks paint-able. There might be some repair needed. I like the aluminum panel solution, would a good long-term fix and would hold paint well. The line x idea is good too, I hadn't thought of putting some protection on the lower flanks of the front of the camper.

Thanks for the link Donna, you're always great help.
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