Trillium 1300 Bumper? - Fiberglass RV
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Old 08-07-2022, 10:30 AM   #1
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Name: Scott
Trailer: Trillium 1300
Quebec
Posts: 15
Trillium 1300 Bumper?

Hi. I think a simple question here. I'm working on a 1972 Trillium. PO did a body off frame resto in 2010, and the frame is in very nice condition, with SS mounting hardware. BUT, there is no rear bumper. Frame terminates at an angle iron cross member. Did all Trilliums have the rear (2" x 2" ?) rear bumper? Or were some produced without it? In Ontario it was registered as a 1972 but came up as a 1975 when I registered it in Quebec.
Any information appreciated!
Scott
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Old 08-09-2022, 08:18 AM   #2
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Trailer: 1981 Trillium 5500
Posts: 1,147
as far as I know, all had the rear bumper, I have never seen one without, not to say it couldn't be though, to me, it looks like the PO cut it off right at the rear crossbrace.
personally, I would want one.
Joe
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Old 08-09-2022, 09:38 AM   #3
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Name: Scott
Trailer: Trillium 1300
Quebec
Posts: 15
Joe,
Thanks for the reply. I tend to agree; all pics I have seen seem to have one. I have a great welding place nearby that can add one. I would like to mount a spare tire, if nothing else.

Can anyone confirm dimensions? Are they 2" x 2" box steel? And, roughly how far back should it extend?

Thanks again!
Scott
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Old 08-09-2022, 10:20 AM   #4
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Name: Dave W
Trailer: Trillium 4500 - 1976, 1978, 1979, 1300 - 1977, and a 1973
Alberta
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Scott, I have seen a couple of older Trillium trailers that the bumper had been removed and lost.
https://www.fiberglassrv.com/forums/...tml#post405143

This one has a shot of where the bumper attaches to the frame:
https://www.fiberglassrv.com/forums/...tml#post393407

The frame tube looks like 2 x 2 square tube, but you would be wise to measure it to be sure.

After this style of frame, Trillium experimented with a bent plate style. I have one of those.
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Old 08-09-2022, 11:13 AM   #5
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Name: Larry
Trailer: Trillium
Arizona
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Dimensions

Hello,

On my '78 Trillium 1300 the bumper measures 2" wide by 3" high.
That is the same dimension as the steel in the frame...
The rear of the bumper extends 2" past the back of the tail light lenses.
In other words the main frame ends even with the back of the lenses and
then the 2" wide bumper is welded to the ends of the frame rails.
The bumper extends 9" outside of the frame rails on each side.

Pix shows original bumper plus what the first original owner cobbled
on top of the factory bumper using 2'x2' square tubing and 2 1/2" round..
Looks kinda funky but sure protects body of trailer backing into small
obstacles. I did not like all that on the back at first but have grown to
appreciate it... good place for backup lights and ham radio antennae.
Inside of the top tube are the legs for the original factory awning.


Hope this helps...

Uncle Larry
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Old 08-09-2022, 05:25 PM   #6
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Name: Scott
Trailer: Trillium 1300
Quebec
Posts: 15
Thank you very much for the help. Especially the detailed dimensions, Larry. And David those pics are just what I need. Larry, you're right: that bumper has a robust look to it, but I like it! Lots of options there.

I'll get busy with my welding guy and see what I come up with. I'll probably build as close to original specs as I can, thanks to provided dimensions and pictures.

Let's just add that to the list of jobs, shall we?

Thanks again,
Scott
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Old 08-10-2022, 07:38 AM   #7
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Posts: 1,147
when I had my 1300, the bumper mounts were the stock square tubing extended past the trailer as described above, they were not angle as shown in the pictures
Joe
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Old 08-10-2022, 08:00 AM   #8
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Name: Scott
Trailer: Trillium 1300
Quebec
Posts: 15
Ok thanks Joe. I imagine the angle iron was an easy fix to the original, which was box steel. I think I will go with the angle iron because it allows easy access to the rear shell mounting bolts, and makes it easy to shoot in rust proofing now and then.

My frame is all 2 1/2 x 2 1/2 inch box steel. I will use the same for the rear bumper.

Thanks everyone for all the input. I'll post a pic or two once I get the job done and I paint it.

Scott
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Old 08-17-2022, 11:39 PM   #9
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Trailer: 1980 Trillium 4500
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1300 and 4500 bumpers.

We had a 1977 1300 that had a 2" x 3" rear bumper and 2" x 3" frame rails. The rear bumper had a spare tire mount attached and stabilizer jacks. Our 1980 4500 has a 4" x 4" rear bumper with a spare tire rack mounted on it and is used for the sewer hose storage, 4500 has 1/2 bath in the front. The rear bumper helps reduce frame flex and minimizes cracking at the crossmembers. If I remember correctly the bumper was 3/16" thick 2"x3" tubing the same as the frame rails.

Also notice in the front view that the previous owner did a ladder reinforcement on the front frames rails where they are known to crack. It wasn't cracked but it made the front stronger. The 4500 is fish plated in the stress crack area. The photo of the front was taken when we first got it and had done any repairs or upgrades yet. It had a 2" hitch and the 4500 had a 1 7/8" hitch I later upgraded to 2" also.
Attached Thumbnails
1977 TRILLIUM 1300  (12).JPG   1977 TRILLIUM 1300  (18).JPG  

1977 TRILLIUM 1300  (20).jpg  
__________________
1980 Trillium 4500 with front 1/2 bath, toilet, lavatory, 305watts solar, TriStar 45 MPPT controller, Trojan 1275 150amp battery. 2002 Chevy S-10 Crew Cab, 4.3, 4WD, Leer Shell
1977 Trillium 1300, front bunk beds. sold
2004 Damon Challenger 335F, fiberglass Class A, retirement home
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Old 08-18-2022, 05:14 AM   #10
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Name: Scott
Trailer: Trillium 1300
Quebec
Posts: 15
Thank you Robert. There is definitely some variation out there. My 1300 has 2" x 2" box steel frame rails. I just yesterday commissioned a local guy to weld me up a bumper. Also 2 x 2. I will add on a spare tire mount.

I wonder why some were 2x3 and some 2x2? Mystery. I like your rear stabilizers. Did you find they don't have much ground clearance? No troubles with speed bumps for instance?

Thanks for the info!
Scott
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Old 08-18-2022, 09:49 AM   #11
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Name: Dave W
Trailer: Trillium 4500 - 1976, 1978, 1979, 1300 - 1977, and a 1973
Alberta
Posts: 6,669
Registry
Quote:
Originally Posted by Scott M in QC View Post
Thank you Robert. There is definitely some variation out there. My 1300 has 2" x 2" box steel frame rails. I just yesterday commissioned a local guy to weld me up a bumper. Also 2 x 2. I will add on a spare tire mount.

I wonder why some were 2x3 and some 2x2? Mystery. I like your rear stabilizers. Did you find they don't have much ground clearance? No troubles with speed bumps for instance?

Thanks for the info!
Scott
Scott, Those rear stabilizers are mounted to the 2"x3" frame rails. Just ahead of the bumper. They don't hang down below the frame any more than an inch or so.

As for the variety of frame designs, your Trillium came from a time that they were experimenting with different frames. Trillium settled on the 2"x3" frame design. I think that was around 1974.
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Old 08-18-2022, 11:21 AM   #12
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Trailer: 1980 Trillium 4500
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Frame and stabilizers.

Quote:
Originally Posted by Scott M in QC View Post
Thank you Robert. There is definitely some variation out there. My 1300 has 2" x 2" box steel frame rails. I just yesterday commissioned a local guy to weld me up a bumper. Also 2 x 2. I will add on a spare tire mount.

I wonder why some were 2x3 and some 2x2? Mystery. I like your rear stabilizers. Did you find they don't have much ground clearance? No troubles with speed bumps for instance?

Thanks for the info!
Scott
The 2"x2" rails would have more flex hence not as strong. The 1300 is short enough if sitting level and the if the axle is not all sacked out. never had them drag the ground and the 4500 has them also and they have never drag the ground either. the rear bumper is all that keeps you from doing damage when you back into something and a 2"x 3" is stronger.

I had to replace the axle about 6 years ago and had the welding shop that builds utility and flatbed trailers and does upgrades put a heaver weight axle and had it mounted to raise the trailer 2.5" because we boondock in places we shouldn't go. I you have to replace the axle I suggest you raise the height a couple of inches. To see if satting taller is what you want get hookup ready to go and drive up on a piece of 2"x 6" and see if you can handle the extra height getting in and out. Then try 2 pieces to see if you want it a little more height yet. Casita has a high lift axle you can order if you have them build you a new trailer. I wish now that I had them raise it 4".

A good place to find all of your trailering needs online is ETrailer. They are great on returns and solving application needs. I buy stuff locally also to help support local businesses. Some of the stuff local is priced the same or less.

https://www.etrailer.com/Camper-Jack...TJ01RT-HD.html

Hope you enjoy your egg as much as we have ours.
__________________
1980 Trillium 4500 with front 1/2 bath, toilet, lavatory, 305watts solar, TriStar 45 MPPT controller, Trojan 1275 150amp battery. 2002 Chevy S-10 Crew Cab, 4.3, 4WD, Leer Shell
1977 Trillium 1300, front bunk beds. sold
2004 Damon Challenger 335F, fiberglass Class A, retirement home
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Old 08-18-2022, 03:37 PM   #13
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Name: Scott
Trailer: Trillium 1300
Quebec
Posts: 15
Again, good info. Thanks to both of you. Right now the 2 x 2 is solid, as it was recently redone. We will see what 10 years down the line brings. I think either frame size in structural steel would be adequate on these light trailers, so I'm not worried.

I was looking at those jacks on etrailer, so it's good to know I could make them work without worrying about bottoming out.

Robert, I like the lift via axle idea. We tow with a 4runner so would be nice to have the camper sit up a little. I'm using a 4 inch drop on my hitch insert to compensate.

Lots of ideas out there.
Thanks,
Scott
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Old 08-18-2022, 04:12 PM   #14
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Name: Dave W
Trailer: Trillium 4500 - 1976, 1978, 1979, 1300 - 1977, and a 1973
Alberta
Posts: 6,669
Registry
Quote:
Originally Posted by Scott M in QC View Post
Robert, I like the lift via axle idea. We tow with a 4runner so would be nice to have the camper sit up a little. I'm using a 4 inch drop on my hitch insert to compensate.

Lots of ideas out there.
Thanks,
Scott
Trillium / Outback use a 2"x2" square tube welded to the frame, with Nuts welded to the inside. The nuts are used to bolt the axle on the frame. Typically they use a 10° up angle on the axle to put the wheel at the same hight. You could use a 0° angle, like stock. This would give you both a bolt on axle, and an additional 2" of lift.
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Old 08-18-2022, 05:04 PM   #15
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Name: Scott
Trailer: Trillium 1300
Quebec
Posts: 15
Good idea David. Future project. If this camper turns out to be a keeper then I will definately go that route.
Scott
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Old 08-28-2022, 11:31 AM   #16
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Trailer: 1972 Boler American and 1979 Trillium 4500
Posts: 5,113
Quote:
Originally Posted by ROBERT ONEILL View Post
Our 1980 4500 has a 4" x 4" rear bumper with a spare tire rack mounted on it and is used for the sewer hose storage, 4500 has 1/2 bath in the front.

I'd be interested in seeing a picture of the spare tire rack. I'm looking to add an A frame tire rack on my 4"x4" bumper. I don't like the single pedestal aftermarket spare tire mount as it puts the tire too far rearward. My current mount is something like this:
https://www.etrailer.com/Spare-Tire-...hy/BR56VR.html

I'd like to put the tire above the bumber rather than behind it.
Measurements would help me make one. I'm thinking of adding a 3rd brake light and back up camera above the tire.
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Old 08-29-2022, 10:35 AM   #17
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Trailer: 1980 Trillium 4500
Posts: 74
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A frame tire mount.

I will get some photos and measurements of the tire mount and post them to the thread later today so everyone can see how easy the mount is. It was the same mount on both my 1300 and 4500 so I believe that they were from Trillium.
__________________
1980 Trillium 4500 with front 1/2 bath, toilet, lavatory, 305watts solar, TriStar 45 MPPT controller, Trojan 1275 150amp battery. 2002 Chevy S-10 Crew Cab, 4.3, 4WD, Leer Shell
1977 Trillium 1300, front bunk beds. sold
2004 Damon Challenger 335F, fiberglass Class A, retirement home
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Old 08-29-2022, 10:58 AM   #18
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Trailer: 1980 Trillium 4500
Posts: 74
Registry
A frame tire mount.

I will get some photos and measurements of the tire mount and post them to the thread later today so everyone can see how easy the mount is. It was the same mount on both my 1300 and 4500 so I believe that they were from Trillium.
__________________
1980 Trillium 4500 with front 1/2 bath, toilet, lavatory, 305watts solar, TriStar 45 MPPT controller, Trojan 1275 150amp battery. 2002 Chevy S-10 Crew Cab, 4.3, 4WD, Leer Shell
1977 Trillium 1300, front bunk beds. sold
2004 Damon Challenger 335F, fiberglass Class A, retirement home
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Old 08-29-2022, 03:11 PM   #19
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Trailer: 1980 Trillium 4500
Posts: 74
Registry
Quote:
Originally Posted by Roy in TO View Post
I'd be interested in seeing a picture of the spare tire rack. I'm looking to add an A frame tire rack on my 4"x4" bumper. I don't like the single pedestal aftermarket spare tire mount as it puts the tire too far rearward. My current mount is something like this:
https://www.etrailer.com/Spare-Tire-...hy/BR56VR.html

I'd like to put the tire above the bumber rather than behind it.
Measurements would help me make one. I'm thinking of adding a 3rd brake light and back up camera above the tire.
TRILLIUM 4500 SPARE TIRE MOUNT.
The spare tire mounts on the rear bumper of our 4500 is on a 4" x 4" bumper. It is made with 2" x 2" X 22" long angle iron with the top welded on the top. There are 3 1/2" x 7" carriage bolt with the top bolt welded to both of the side angle irons. The there is another carriage bolt weld to each of the side angle irons down 8" below the top. The bolt heads are positioned with the shoulder of the bolt head against the angle iron. A nut and washer are threaded on to each of the 3 bolts and are used to position the tire against the angle iron on the side. The spare is then put on and another flat washer and nut are used to sandwich the wheel between them and tighten them to secure the wheel. I used a cable and lock to secure them to the trailer and put a tire cover over it to hid the cable and lock. Make sure that your spare will fit on the trailer and that the stock wheel and tire will fit on the rack also with the same backset spacing. Also make sure you have a socket or wrench that will fit the nuts on the rack.
Attached Thumbnails
TRILLIUM 45OO 1980 (52).jpg   TRILLIUM 45OO 1980 (41).jpg  

TRILLIUM 45OO 1980 (35).jpg   TRILLIUM 45OO 1980 (26).jpg  

TRILLIUM 45OO 1980 (51).jpg  
__________________
1980 Trillium 4500 with front 1/2 bath, toilet, lavatory, 305watts solar, TriStar 45 MPPT controller, Trojan 1275 150amp battery. 2002 Chevy S-10 Crew Cab, 4.3, 4WD, Leer Shell
1977 Trillium 1300, front bunk beds. sold
2004 Damon Challenger 335F, fiberglass Class A, retirement home
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