Love this post through and through. Great idea! I made a couple of tweaks to mine because my car is not as long. I used an 8'6"x 11'6" tarp
1. On the car side i used the same 3/4" conduit and then used half of a 3/4" conduit to make the folding arms. On that conduit, I placed a 3/4" coupler with an eyelet bolt and placed a 1/2" conduit inside to make a telescoping leg.
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To make this more rigid, I cut the 1/2" so that when it was fully inside of the 3/4" conduit, it would line up with the car side tubing when folded in. I think it was like 8.5' or so. This little modification makes it so that i didnt have to cut and re-grommet the tarp.
2. Ziptied both ends of the tarp.
3. I had a sunshade that was crappy and donated its tent poles to this project. I fit the elastic to the new height and bent one of the rails to fit my awning. These fit perfectly inside of my 1/2" conduit, so to mount them, I just took the cap off of my 90 degree elbows. These two bent pieces are the only things that dont make this fully collapsible and i just throw them under my seat. haha
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4. I didnt have a bracket to weld on so I grabbed a 90 degree steel remnant that i had around and used U bolts to mount it to my rack. The U-bolts make it convenient during set up because it allows my awning to bend down during set up without placing stress on my bolts.
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Thank you so much for your write up and clear instructions. This made my life so much easier. And I also went with the button up bag from another tarp which is really nice. I have been driving around with it (>90mph) and it holds well. Here are some more pics!
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