DIY 8020 Pop-up Topper Build (2014 GMC Sierra 1500)

MikeBabs

New member
I realized that I made my original post in the wrong forum, so I am restarting here. You can view the original post here:



Before I begin, huge shoutout to @97heavyweight for documenting his build, I referenced it extensively.
You can check his build out here:



First of all, the camper had to be Light Weight due to the limited weight capacity of the truck - Limited compared to a 3/4 or 1 ton. As such, materials like Steel, Wood, etc. were out, Aluminum was what I chose

Second, this had to be low budget.... ie. much less than it would cost me to buy a project M, or something similar (so under $10,000cdn)

(Oh, and I chose to do a popup to save weight and keep ground clearance reasonable).


I was doing a ton of research on building with aluminum till I came across this build thread where @97heavyweight built a camper with 8020.

It was more expensive than aluminum but since I didn't have a way to weld aluminum, 8020 seemed the way to go. But what really sold me on it were the free tools I found!

FrameXpert and the "Tech Toolkit" from 8020!


Why was the Tool Kit critical to me? Because this program gives me the ability to do deflection tests for the cantilever part of the build with various loads and lengths. I wasn't able to find anything like this for boxed aluminum, so this pretty much sealed the deal for me choosing to go with 8020 style extrusion.

I started my design with the cantilever part of the design and worked my way from there. Using Tech Toolkit, I figured out the loading and what I wanted my maximum deflection to be.

View attachment 734957



This gave me the profile of 8020 that I needed as well as the length of the cantilever. from there I added supports down to the truck bed and enclosed it.

View attachment 734958

I went with a flip or full-width access door for weight and simplicity. I also designed this so I can take the tailgate off, enclose the back and put in an RV door if I so desire.

I decided to run a support down to the truck bed to take some of the weight loading off the bedsides and transfer it down to the truck bed.

Lastly, I used 1.5x3" for the roof to give it rigidity and braced it with 2 horizontal supports. If this ends up being flimsy, then I can easily add more support. Another benefit of using 8020.

View attachment 734959View attachment 734960View attachment 734961

So that the design of the camper structure.

The next step was sourcing the 8020. This proved to be a big challenge as I am not located anywhere near a big city. After an extensive google search, I came across Faztek in Canada.

www.faztek.ca

The pricing was better than 8020 and the shipping wasn't too bad. Plus they had black anodized extrusions in stock, which I was a fan of especially since that didn't cost much more. But the big drawback aside from the shipping costs, was the fact they only shipped up to 97" lengths and I needed 110" for my main support beams. So, after a lot of thought, I decided to order the longest continuous length I could and then use a ton of butt joints and plates to secure the pieces together. Not overly happy with this, but there shouldn’t be too much force at that point of the frame as I have a support leg placed before the joint (This location will vary and I might even change it to a 1530 support spanning the joint.

From here I will be siding the camper with .040 aluminum, mostly because I cannot find ACM (Aluminum comp panels) anywhere near me.

I will be using 1/2" or 3/4" plywood for the sleeping area and will be custom-making a 6" foam bed to be full width and 80" long. so, somewhere between a Queen and a King mattress.

I do have a removable panel that supports approximately 3 feet of the bed that can be easily removed and pushed to the forward part of the camper when the top is deployed. This gives me the full dimensions of the bed as a living space when not in sleeping mode. I am planning on designing the foam here to be used as cushions on a bench or seats below.

The interior will be designed after the camper is built; I have designed this camper to give me the max amount of space for the least amount of weight so the interior will be determined after the shell is built, the truck is weighted and I see how much axle payload I have remaining.

Where I better at CAD, I probably should have designed this all in Sketch up and planned out every little detail. But I am not good at CAD and not about to tackle that learning curve just for this project. lol

So, I'm sure I am leaving a ton of questions unanswered, so please feel free to ask away in the comments section and I will do my best to address them!

I am also documenting this build on YouTube if you'd like to follow along:
 

97heavyweight

Active member
Thanks for the shoutout i'm glad my build is useful to some. Feel free to shoot any questions at me that you have. kit.campers on Instagram had to do the same thing with his main support piece. Maybe check out his build and see how he connected the two pieces to make it longer. One of the benefits of working with a 5' bed.
 

MikeBabs

New member
Thanks for the shoutout i'm glad my build is useful to some. Feel free to shoot any questions at me that you have. kit.campers on Instagram had to do the same thing with his main support piece. Maybe check out his build and see how he connected the two pieces to make it longer. One of the benefits of working with a 5' bed.
Thank you for recommending kit.campers! I reached out to him and got some great ideas!!! He uses a cheese plate with a bunch of fastners. I went the butt connector route and now that I have the 8020 in my hands, I think the butt connectors will be more than enough to hold.

And again thanks for providing such detail on your build, it's super helpful!!
 

MikeBabs

New member
Well, the 8020 has shown up!!!

here's a quick look at it.

My next step is to Assemble the 6" supports and the roof and figure out the raising/lowering mechanism. I would like to be able to sit up in bed, so I am figuring the roof will need to raise about 38 inches. Is that about average?

For the lifting mechanism, I think I will use the piano hinge style mechanism attached to boards like the Project M. I am having a hard time finding industrial piano hinge where I am, so considering just buying a 12-pack of door hinges from Home Depot.


1661199868283.png

Thought about using 1/2" plywood (as I'm not sure what that black material they use is) but I'm also looking for other options here.

This lifting mechanism idea isn't set in stone, so if you have an idea, I'd love to hear it!!

Thanks!
 

MikeBabs

New member
Well, it's been a while but I am finally starting on the build process of this project!

Created an update video here for those who'd like to see how I am putting this 8020 together.

 

MikeBabs

New member
Had a setback with the gas struts, but progress is still being made!! Right now, I am working on a hinged support mechanism for the roof. Will update once I get that complete!

 

ITTOG

Well-known member
You can get the hinges on McMaster-Carr or Amazon. I believe the black material they use is starboard.
 

MikeBabs

New member
Well, I have done an absolutely horrible job of updating my build progress here, apologies for that. I have indeed been busy since my last post and have gotten the shell of this camper done!

I created a video detailing how I built the frame, how the 8020 hardware works, how I attached the aluminum sheets and an overview of the Canvas. You can watch that video here:


For those who don't do the YouTube thing, I will attach a few pictures that I took along the way :)

Looking forward to your questions and comments!

Enjoy!


8020 Frame Assembled
frame.jpg

0.040 Aluminum sheets (Etched and primed) installed with 8020 fasteners.20231105_075909.jpg


Painted with Bedliner
409453494_10160633874241311_4383985583810493879_n.jpg


Gas Lifting Springs and Hinge Mechanisms installed
414732630_10160661185526311_2145268978207039811_n.jpg


Laying out the canvas (18oz Vinyl Coated Polyester)
387863497_10160522796101311_4334136706300553227_n.jpg

Sewing smaller parts of the Canvas
415782655_10160664181756311_5390557960320375641_n.jpg

Welding everything to the main part of the canvas with HH-66 Vinyl Cement.
414933232_10160667386881311_8072910867925846391_n.jpg

Installing the canvas with a look at the lifting struts on the rear door.
416585077_10160670246336311_179776684116055049_n.jpg

installing the canvas from inside
416313637_10160670247436311_3986534910267391540_n.jpg

The shell is complete!
416843094_10160670245671311_4817118995990657687_n.jpg
 

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