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 > Swivel seat base in Chev 4500/Sunseeker 2250

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BruceMc

Oregon - Willamette Valley

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Posted: 08/14/20 04:59pm Link  |  Quote  |  Print  |  Notify Moderator

I had posted on this previously, but cannot find the thread in the archives. It appears RV.net doesn't return results between a year old and 2013... D'oh!

So... Way back a few years ago I purchased a swivel seat base for our Sunseeker.

[image]

It was workable, but just barely. Swiveling meant opening the door, and in the rearward facing position, the armrest was crammed against the door armrest.

[image]

Not a good setup.

I reworked both the swivel and base:

[image]

and have a decently working setup. However, there was one annoyance that needed fixing - the seat was 1 3/4 inches higher than before, due to the thickness of the swivel plate.
To that end, I rebuilt the base by taking, you guessed it, 1 and 3/4 inches out of the height.

Here's the results:

[image]

with the swivel plate mounted:

[image]

I need to fill the holes that I used to clamp the upper and lower halves together for welding, and will probably use small carriage bolts. They are no longer needed, but would further enhance the strength of the base. My friend says I need to install Chroooome (Bop Bop DeBop Bop) bolts...

and for comparison, here's the driver's seat base:

[image]

I'll install the setup this afternoon, and all should be well. My lovely bride at 5'4" and our friend (who is about the same height) should be able to put their feet flat on the floor, as they did before the swivel seat mod.

More pictures of Seating Mods including more pics of the swivel base.


'16 Forest River Sunseeker 2250SLEC Chevrolet 6.0L
Previously:
'00 Four Winds 26Q Class C (Ford E350 V10)
'96 Kit Sportsmaster 212f Fifth Wheel/'93 GMC Sierra K2500
'91 SunLite poptop truck camper
and the first: a Wildernest flip-top canopy.


IAMICHABOD

Sunny So Cal 90713

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Posted: 08/14/20 08:09pm Link  |  Quote  |  Print  |  Notify Moderator

Nice Work!! Now if I just had the tools to do it I might just try that on mine. It is a pain to swivel without opening the door,that would be nice if I could fix that.

I did do a search also but all I could find is the one that you posted on the Forest River Forum other than that you did post on the thread I opened about aSwivel Seat back in 2012


2006 TIOGA 26Q CHEVY 6.0 WORKHORSE VORTEC
Former El Monte RV Rental

Buying A Rental Class C

Chevrolet Based Class C


CC38EL

Indiana

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Posted: 08/15/20 10:23am Link  |  Quote  |  Print  |  Notify Moderator

My Google search for swivel bases was not fruitful. Where would you find them for a 2017 Express 4500?


Jim
2019 Coachmen Mirada Select 37LS

BruceMc

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Posted: 08/15/20 10:37am Link  |  Quote  |  Print  |  Notify Moderator

Seems to me there would be a market for a combo base & swivel for the passenger seat, tailored to fit two models - The Chevy 2004-present Express/Savanna vans as we have, and the Ford E series. I'd bet they'd sell pretty well.
The drivers seat is usually not workable in a swivel configration, tho some floorplans would allow a drivers seat to swivel. Problem is, the steering wheel gets in the way!

IAMICHABOD, it's pretty easy to offset the base and swivel to reduce/eliminate the interference with the door. All you need is a drill & bits to move the base and move the swivel on the base, and a hack saw to bevel off the corners of the swivel. A file helps to de-sharpen the edges.
It's a lot more work to shorten the base, but a good welding shop could do it in an afternoon.

BruceMc

Oregon - Willamette Valley

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Posted: 08/15/20 10:59pm Link  |  Quote  |  Print  |  Notify Moderator

CC38EL wrote:

My Google search for swivel bases was not fruitful. Where would you find them for a 2017 Express 4500?


It should be the same as the number as others, and I have shown in past posts. You will need to modify the plate, tho, as I did. It will work but it is not optimum. Yet, it's better than nothing. I do appreciate having the extra seat when we have 3 or 4 folks in the Sunseeker.

ron.dittmer

North-East Illinois

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Posted: 08/16/20 05:53am Link  |  Quote  |  Print  |  Notify Moderator

Nice modification.

As others mentioned, I wonder if a "base with swivel" made at the proper height and offset, is available.


2007 Phoenix Cruiser model 2350, with 2006 Jeep Liberty in-tow


BruceMc

Oregon - Willamette Valley

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Posted: 08/16/20 07:53am Link  |  Quote  |  Print  |  Notify Moderator

Thanks Ron!

This is the swivel I ordered from Shop4Seats:
96 + GMC - Chevy Swivel Plate Factory Seat

They have Swivel Bases, but they look like they were designed in the 70's... yet they may just fit the bill. I haven't researched the dimensions to see if any would be a direct replacement.

* This post was edited 08/16/20 08:01am by BruceMc *

BruceMc

Oregon - Willamette Valley

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Posted: 08/16/20 08:23am Link  |  Quote  |  Print  |  Notify Moderator

Final results:

I painted the base again, this time in place after installation as GM's studs are white, and stand out in contrast to the black base:

[image]

In the normal travel position, the seat is now the correct height, but is shifted toward the center by an inch:

[image]

The only detriment to dropping the base is when the seat is facing the rear - it is now 1 3/4 inches lower.

[image]

But I like it. When we have a crowd, that tends to be my place to get out of the way. I prefer setting there anyway, so it has become "my spot"!

IAMICHABOD

Sunny So Cal 90713

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Posted: 08/16/20 08:28am Link  |  Quote  |  Print  |  Notify Moderator

There are 3 MFGs that make Ford seat bases.

Discount Van and Truck

Then there is Sportsmobile Now this one may be for most all Fords.

And the one that I got mine from Shop4Seats

I think it depends on the year model which one will fit.

You might look at This Video to help you along if you are doing on a Ford Chassis.

When the weather cools some I am going to try to do what Bruce did on his.[emoticon]

pnichols

The Other California

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Posted: 08/16/20 11:30pm Link  |  Quote  |  Print  |  Notify Moderator

I sure wish some manufacturer would offer a Ford swivel base with adjustable height ... for us Class C owners with coach floors higher than the E350/E450 cab floors.

For these situations, the swiveled passenger seat needs to be raised up to match the height of the regular coach seating.


Phil, 2005 E450 Itasca Spirit 24V

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