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Old 02-24-2016, 05:42 PM   #1
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Removal of seat mount rail from wall

In my 1993 Bluebird, if I remove (cut off) just the "lip" where where the seats were mounted, but leave the 8 inch metal section, will that compromise the structural integrity of my bus? Thanks.
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Old 02-24-2016, 05:51 PM   #2
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no its what i did also
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Old 02-24-2016, 05:53 PM   #3
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Depends on the bus. In most, the seat rail is indeed a structural component. There has been quite a bit of discussion on that topic here.
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Old 02-24-2016, 06:58 PM   #4
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Depends on the bus. In most, the seat rail is indeed a structural component. There has been quite a bit of discussion on that topic here.
so is the inside skin but we all remove that. she wants to know if its ok to remove it. the answer is yes
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Old 02-24-2016, 07:16 PM   #5
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You probably already saw nat_ster's drawing on this thread or elsewhere? I've left that seat mounting ledge in mine because it stiffens the vertical section of the chair rail. Without it, the top edge of the vertical piece can wobble sideways. Just a little folded part like that adds remarkable strength to a piece of sheet metal. I'm planning around it by insulating the walls to the depth of that ledge so that it "disappears." If you really need to notch it in a few places to get something through I wouldn't see a big problem with that. I'm inclined to believe that little ledge, along with the rub rails on the outside, plays a part in controlling how the side walls flap in the wind. I don't know of any data to prove or disprove it; that's just my own personal theory.
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Old 02-24-2016, 07:31 PM   #6
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I do not plan to remove mine. I will work around it as best I can..being a former
Bodyman my thought is the manufacturing company wants to cut cost as much as possible, so they would not have put it in if it were not needed..holding the seat up is just an added bonus for them.
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Old 02-24-2016, 11:22 PM   #7
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Depends on who you talk to. The inner skin discussion is another one that has gone on for years with lots of unqualified input. The only definitive opinion on this site came directly from Blue Bird stating that the inner skin was indeed a critical structural component and not to be removed. Go where you want. I'll stick with what the factory engineers have to offer.
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Old 02-24-2016, 11:58 PM   #8
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If you want to maintain the structural integrity of a School Bus then put all your inner sheetmetal back on & reinstall all the seats you removed, reinstall all windows that were removed and or lower your roofs back to where they were.
The moment you change anything you have changed the standards a School Bus has to meet but you will still be stronger than a S&S
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Old 02-25-2016, 05:55 AM   #9
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Quote:
Originally Posted by Stu & Filo. T View Post
If you want to maintain the structural integrity of a School Bus then put all your inner sheetmetal back on & reinstall all the seats you removed, reinstall all windows that were removed and or lower your roofs back to where they were.
The moment you change anything you have changed the standards a School Bus has to meet but you will still be stronger than a S&S
All of the items that you spoke of removing have screws or small bolts holding them in. And you are after all replacing what you remove with new items.
Cabinets, walls, and when you reskin the Windows it makes that part stronger.
The chair rail is welded or riveted every few inches so to make it harder to removed to help keep the structural integrity intact. JMHO
Plus I might add, that I know nothing about nothing
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Old 02-25-2016, 08:06 AM   #10
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Quote:
Originally Posted by Tango View Post
Depends on who you talk to. The inner skin discussion is another one that has gone on for years with lots of unqualified input. The only definitive opinion on this site came directly from Blue Bird stating that the inner skin was indeed a critical structural component and not to be removed. Go where you want. I'll stick with what the factory engineers have to offer.
Just because one doesn't work for bb doesn't mean their input is unqualified.
The man who ok'd my roof raise has engineered some very famous aircraft.
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Old 02-25-2016, 08:12 AM   #11
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Quote:
Originally Posted by Stu & Filo. T View Post
If you want to maintain the structural integrity of a School Bus then put all your inner sheetmetal back on & reinstall all the seats you removed, reinstall all windows that were removed and or lower your roofs back to where they were.
The moment you change anything you have changed the standards a School Bus has to meet but you will still be stronger than a S&S
We need more meetups so folks can actually sit in a bus with a metal interior vs one thats fully converted and insulated.
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Old 02-25-2016, 10:09 AM   #12
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Quote:
Originally Posted by Skoolydoo View Post
All of the items that you spoke of removing have screws or small bolts holding them in. And you are after all replacing what you remove with new items.
Cabinets, walls, and when you reskin the Windows it makes that part stronger.
The chair rail is welded or riveted every few inches so to make it harder to removed to help keep the structural integrity intact. JMHO
Plus I might add, that I know nothing about nothing
My point is, the moment you do anything (Remove Seats) The you have changed the original Structural design.
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Old 02-26-2016, 04:24 PM   #13
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I am glad I found this discussion because I would love to remove that rail as well, not just to eliminate the part that juts out, but more because I want to lose the panel underneath that was trapping tons of moisture. Not sure what the consensus is. I will continue to follow this thread before yanking it out.
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Old 02-26-2016, 04:41 PM   #14
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You might be waiting a while... it's rare that we reach a consensus here! Usually we agree to disagree and try to keep it friendly.

All kidding aside, the vertical section of the chair rail is the primary thing that holds the bus walls and roof to the floor. The exterior sheet metal attaches to the ribs in the wall, the ribs in the wall attach to that vertical section of chair rail, and the chair rail attaches to the floor. We can debate the importance of the flange the seats rest on, but the overall piece that creates the pocket where moisture is getting trapped (if I've understood you description correctly) has to stay.
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Old 02-26-2016, 05:03 PM   #15
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Thanks. I have decided to keep it in place and work around it.
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Old 02-26-2016, 09:13 PM   #16
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And the foot bone is connected to the ankle bone and the ankle bone is connected to the shin bone and the shin bone is connected to the knee bone..
There was a cool song bout that many years ago..any one remember?
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Old 02-27-2016, 12:36 PM   #17
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BTW...if you enclose the area below the chair rails tab, it makes the perfect chase for electrical and even plumbing.
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Old 02-27-2016, 11:37 PM   #18
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