trillium cracks above wheel well - Fiberglass RV


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Old 08-05-2016, 11:23 AM   #1
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Name: Reade
Trailer: Trillium
manitoba
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trillium cracks above wheel well

Hey all.

First time poster long time viewer.

I have a 70's 1300 I have been working on and I have a little issue with some cracks above the wheel well. I gouged them out and marine filled them and then Re gel coated them. After a 700 km haul the cracks have resurfaced.

So 2 questions are these cracks the evidence of a larger problem? The other is the next time I go and fix this should I be strengthening in the wheel well from the inside?

I am guessing that I will be putting fiber glass down next time but should I do it both inside and outside?

Thanks

Reade
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Old 08-05-2016, 11:58 AM   #2
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You need to do a little trouble shooting and find out what's causing it. Tires too big?, Axle shot. Etc.etc.
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Old 08-05-2016, 03:18 PM   #3
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Name: Reade
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This seems to be a problem with some of the fiberglass structure and not due to any of the trailer frame or axel. I no the wheels are stock size and the axel although not great still has suspension. I am taking the the camper shell off the trailer on the fall and putting a new axel under it but I think this has less to do with axel or tire. Size and more to do with errors or problems in the lay up. Not sure though so thanks for the reply. I'll post a better pic soon.

Reade
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Old 08-07-2016, 09:08 AM   #4
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Old 08-11-2016, 02:10 PM   #5
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Reade, I have been studying Trilliums for some years now. I have never seen this before. That area is under the closet, on the inside. I would be inclined to sand the inside, so you get good adhesion of a couple of new layers of fibreglass, on the inside. Not sure how you would get access to it, other then cutting out the bottom of the closet, or putting in a door on the lower section. This could provide some access, but you would still have to reach over the wheel well.

There may already be a door there, but it would have a lining that you have to remove. There are from one, up to three doors on the closet of a 1300, depending on year, and options. The older Trilliums wasted lots of space at the top of the closet. Later ones all had small door at the top. The lower door, being in-front of the wheel well, is so shallow that other then a spice rack, not much would fit there.
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Old 02-26-2017, 10:56 AM   #6
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Name: Reade
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Thanks David

Sorry for taking so long to reply. Just getting back to the trill repairs now.

Thats what I was thinking for a repair. I will sand and fibreglass both sides this time instead of just the exterior.

The crack is actually on the other side of the trailer. Under the sink. I think it may have been related to the water tank that was once on that side... But this is just a guess.

I am taking it off the trailer today and getting the axel replaced. Thats what brings me back to the site. I will let you know how the repair works out sometime this summer.

Reade
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Old 02-27-2017, 05:46 PM   #7
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Originally Posted by Reade View Post
Thanks David

Sorry for taking so long to reply. Just getting back to the trill repairs now.

Thats what I was thinking for a repair. I will sand and fibreglass both sides this time instead of just the exterior.

The crack is actually on the other side of the trailer. Under the sink. I think it may have been related to the water tank that was once on that side... But this is just a guess.

I am taking it off the trailer today and getting the axel replaced. Thats what brings me back to the site. I will let you know how the repair works out sometime this summer.

Reade
Like David I've renovated over 7 Trilliums and own 8 others now, and like David said I've never seen this problem before, are you sure it's a stress crack or just a hair line crack in the gel-coat (that I HAVE seen), hard to see in pictures and the paint job doesn't help.. After blowing up the photo it looks like someone might have pried against it from the inside trying to remove something the way it sort of bulges out there.....
The water tank is located in the floor between the two side bunks in the back so I wouldn't believe that would be the problem either...
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Old 02-27-2017, 05:59 PM   #8
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Cracks usually don't reoccur unless the glass is stressed/flexing. Since you're pulling it off the frame I suggest a really thorough frame check. Might have a trailer place do an exam and add some bracing.
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Old 03-03-2017, 07:14 PM   #9
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Thanks Guys I will be taking it off the trailer this weekend so I will let you know what I find.
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Old 03-04-2017, 12:06 PM   #10
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Name: Reade
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Gee Whiz now thats a crack

Well I took it off the trailer today as promised. Found a super easy way to get it off. Just jacked it up fairly high. Then put some milk crates under it. lowered it down a bit so the trailer separated from the bubble. Then slipped some tie down straps between the frame and the fibreglass bubble and lifted it up using the rafters in the garage. dropped the trailer puled it out. slid in a big moving dolly and done.

Now what did i find.... Every screw under the dinette was toast. As in not attached to the trailer. So the only thing that was holding it to the trailer was the two big bolts in the front. So this might be leading to the cracks. I also found a really big crack that was hidden by the trailer. Just where it makes the 4"rise. It is on the passenger(door) side.

So it looks like I will have some major fibreglass work cut out for me.

Trailer will be off to the shop for a new axel, the strengthening plates, sandblast and paint.
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Old 05-30-2017, 09:01 AM   #11
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Name: Reade
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Back at it

Well started grinding down these cracks to do a repair. Unfortunately the big one that was hidden by the frame(and on the inside the closet) had some calking in it so somebody new about it. I would advise everyone to look under the closet to check for this crack in the future. I believe the trailers axle and lack of bolts in the back contributed to these cracks.

One other question to the experts is has anyone else seen these spikes (nails) protruding from the bottom of the trailer?
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Old 05-30-2017, 01:45 PM   #12
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One other question to the experts is has anyone else seen these spikes (nails) protruding from the bottom of the trailer?
Great pictures - I'm interested in following this repair!

Given the position of the spike/nail - I'm wondering if they were not used to align the body to the frame at some time. I wonder about the plywood in your floors - is it still solid? A weak floor might cause the body to flex and crack. I've seen that in early bolers.
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Old 05-30-2017, 01:55 PM   #13
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Name: Reade
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Think your right the nails seem to be in the right spot to align the trailer. just wondering if it was done this way when it was built or someone had it off the trailer before me?

I think the floor is solid under the dinette it seem solid. I will b ripping all of the floor covering off so that will give me a better idea.
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Old 05-30-2017, 08:00 PM   #14
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Well started grinding down these cracks to do a repair. Unfortunately the big one that was hidden by the frame(and on the inside the closet) had some calking in it so somebody new about it. I would advise everyone to look under the closet to check for this crack in the future. I believe the trailers axle and lack of bolts in the back contributed to these cracks.

One other question to the experts is has anyone else seen these spikes (nails) protruding from the bottom of the trailer?
Hi Reade, I too had cracks hidden by the frame
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Mind you quite a bit smaller than yours. Photo:Click image for larger version

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