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Old 06-23-2023, 10:21 AM   #21
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Originally Posted by Danjo View Post
Itís happened that flying solar panels have caused fatalities

https://www.wereldreizigers.nl/en/mo...x-glue-screws/
Scary video and good article. Definitely illustrates the need to get it right when securing panels. Kind of looks like the panel took off a layer of paint or roof covering when it broke loose.

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Old 06-23-2023, 12:05 PM   #22
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2 and yes I stopped to see if they were OK they were not usable but I took them to the next rest area and put then in the large dumpster
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Old 06-23-2023, 12:15 PM   #23
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I'm getting the impression that there's no good way to secure panels to the roof if you don't remove the interior skin of your bus ceiling, something I was worried about early on in my build when we decided to keep the original ceiling. Any creative ideas contrary to my thoughts?
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Old 06-23-2023, 12:39 PM   #24
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Rossvtaylor's approach should work for your situation, shouldn't it? A healthy dollop of sticky stuff (with no paint in between, I assume) backed up by 1/4" rivets seems plenty strong. His 2000# lift test is way more than these brackets should see, especially since they'd presumably be even stronger in shear.
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Old 06-23-2023, 12:44 PM   #25
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Rossvtaylor's approach should work for your situation, shouldn't it? A healthy dollop of sticky stuff (with no paint in between, I assume) backed up by 1/4" rivets seems plenty strong. His 2000# lift test is way more than these brackets should see, especially since they'd presumably be even stronger in shear.
Youíre right, I missed that post when reading the thread somehow.
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Old 06-23-2023, 01:13 PM   #26
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Originally Posted by Tejon7 View Post
Rossvtaylor's approach should work for your situation, shouldn't it? A healthy dollop of sticky stuff (with no paint in between, I assume) backed up by 1/4" rivets seems plenty strong. His 2000# lift test is way more than these brackets should see, especially since they'd presumably be even stronger in shear.
My VHB is secured to the (perfectly cleaned) fiberglass gelcoat on the roof, and I added 3 screws each bracket, predrilled with a pilot hole I forget how big but researched for maximum grab.

I have six brackets per panel instead of the usual four. I think I calculated I could lift the bus off the ground by the solar panels with the VHB alone, based on 3m specifications for pull strength per square inch.

I also added a layer of eternabond over the top for UV protection of the VHB (and added waterproofing).
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Old 06-24-2023, 07:55 AM   #27
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I haven't seen mention of wind that gets under the panels if driving or parked in windy spot . Keep this in mind also as I'm going to fabricate a metal cover for the front of the panels. When we remove the seats we need to stop and come up with a plan of what needs to be done first
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Old 06-24-2023, 10:46 AM   #28
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Catastrophic Failure

The potential problem I see is tape/epoxy, and to some degree, self tapping or other friction type fasteners leave open that possibility of catastrophic failure where thereís little chance of warning before thereís a silicon frisbee. At least with strut thatís through bolted to channel with locking type nuts thereís a lot less chance of that.

It would be great to see examples of factory installations
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Old 06-24-2023, 11:49 AM   #29
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Originally Posted by dbsoundman View Post
I'm getting the impression that there's no good way to secure panels to the roof if you don't remove the interior skin of your bus ceiling, something I was worried about early on in my build when we decided to keep the original ceiling. Any creative ideas contrary to my thoughts?
Why not use a carriage bolt with the head on the inside?
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Old 06-24-2023, 12:00 PM   #30
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I would worry more about a factory mount than what I see here
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Old 06-24-2023, 12:01 PM   #31
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Danjo That would be a great idea if your inside is finished
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