Driver and Passenger Seat Options / Swivel Bases / Seat Belts

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Mike Perez

Administrator
Staff member
Oct 2, 2019
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Mike
Any progress on the seats with integrated belts and swivel base?
Not really. That project has been pushed down the line a bit because it isn’t a huge priority until this thing is running and driving again. Electrical and engine wiring has to come first.
 

MikeB

Member
Oct 26, 2019
35
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Lower Alabama
Ok Just wondering. Well I’m leaning towards the swivel base with tethers. I really don’t think the tethers would be that “ugly” and Im sure an upholstery shop could make skirting that covers it if needed.

Just bumping this up in case someone wants to share progress in this modification. I sure would appreciate learning from their experience.
 

Mike Perez

Administrator
Staff member
Oct 2, 2019
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Ok Just wondering. Well I’m leaning towards the swivel base with tethers. I really don’t think the tethers would be that “ugly” and Im sure an upholstery shop could make skirting that covers it if needed.

Just bumping this up in case someone wants to share progress in this modification. I sure would appreciate learning from their experience.
That’s probably a really good idea
 

Mike_H

Member
Oct 3, 2019
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Grand Rapids, MI
mikehiler.wixsite.com
I wonder if a guy could make a Rollbar behind the front seats, with triangulation, look like it belongs. That would be the ideal place to put a shoulder restraint. Since we don't have front doors, you could run the support legs forward and hide them in the side consoles.
 

Matt Colie

Active member
Oct 25, 2019
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Mike,
You can make anything you like. But, as to if it would do any good when needed, that is another question.
The vehicle frame is not at the maximum width of the body. To make such a structure to have any value at all, the rear legs would have to go though the floor in the region of the step's bottom corner and the front legs will be a real trip. The only place that they could anchor would be the cab mounts that are about in line with the outboard edge of the seat base and under the angle in the cab sole (floor). If you pull out a wheel well liner, you will immediately see what I mean.
The coach that get rolled in the movie "The Anchor Man" had roll structure added, but I don't think anybody got good pictures.
Matt
 

6cuda6

Active member
Oct 3, 2019
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Ontario, Canada
To each their own but i think Mike P has the safest way of doing it so far. I dont beleive there is much structure under the floors stock so you would have to add alot.....
 

Mike Perez

Administrator
Staff member
Oct 2, 2019
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To each their own but i think Mike P has the safest way of doing it so far. I dont beleive there is much structure under the floors stock so you would have to add alot.....
Still have to design a base to compliment the floor upgrades.....but we'll get there.
 

oldairstreamguy

New member
May 16, 2020
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I've been contemplating the shoulder harness and lack thereof issue in my '95 Airstream Classic 36'. After reading the responses here, what if a person went with the integrated harness seat, and use the conventional belts for my lap that are already anchored to the floor? I guess I'd be double strapped, but at least I and the seat would be properly anchored to the coach. I assume the shoulder harness is stressed by integration with the strength of the seat and seat back. I'd be more comfortable with two straps across my lap than the idea of having nothing restraining my upper body in a crash. Thoughts?
 

Mike Perez

Administrator
Staff member
Oct 2, 2019
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I've been contemplating the shoulder harness and lack thereof issue in my '95 Airstream Classic 36'. After reading the responses here, what if a person went with the integrated harness seat, and use the conventional belts for my lap that are already anchored to the floor? I guess I'd be double strapped, but at least I and the seat would be properly anchored to the coach. I assume the shoulder harness is stressed by integration with the strength of the seat and seat back. I'd be more comfortable with two straps across my lap than the idea of having nothing restraining my upper body in a crash. Thoughts?
I think it would be easier to do it how the trucker seats work. Install an integrated harness seat, and then use the factory lap belt anchor points to anchor the seat to the coach.

 

wrath

New member
May 19, 2020
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I made a rotating seat base similar to the European Ram Promaster style. It was essentially a trailer spindle with a ring that sat in a channel. It was entirely captive. It did not rotate easily because I hated the rattle so I made the clearance too tight so you had to fight with it to get it to rotate. It took a lot of space including height. after a redesign I got it to 4.75" of bottom plate to seat track height but I was aiming for 4". I abandoned it and went with fixed bases with secure storage underneath.

The floor is plenty strong on the one I was using to build off. The bulkhead behind the seats is overkill and is made of multiple pieces of aluminum. The rails in the floor are made of extruded aluminum. The aluminum that is around where a factory seat box sits is more than sufficient to hold a 350lb human in an accident that they can survive, let alone the bulkhead where the factory seatbelts attach.

If you look at a vehicle with integrated seatbelts you will see that most with a steel floor the seat track is held in place with 12mm bolts through the stamped steel 14 gauge floor into stamped steel plates tack welded into place. Some don't even have a weldnut. The seat back is affixed to the seat track with a single stamped steel arm and to the seat back recliner with a single 10mm bolt to a single threaded rod.

I would not affix anything to the side walls. The aluminum is too thin without adding material and in most locations it would be ineffective for retention anyway because it would likely cause spinal injury.
 
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