OBV Swivel Seat Mod (Very Popular Lately)

[jstenger]

I took a similar approach to the others with a few changes.

Parts:

(2) 9" X 13" X 1/4" Aluminum Plates
(1) Swivel
(4) 1/4" - 20 X 3/4" Bolts
(16) 1/4" Washers
(Eight) 1/4" Locknuts
(Eight) 5/16" - 18 X 1" Bolts
(2) 5/16" - 18 X 2 1/2" Bolts
(4) Factory Flange Nuts (Originally held seat to rails)
(12) 5/16" Washers
(4) 5/16" Nuts
(2) 3/8" Nuts
(2) 3/4" X 1 5/8 Aluminum Spacers

My factry seat did not have holes in the center to attach the swivel to, so I mounted one of the plates to the bottom of the seat using 5/16" -18 X 1" bolts, washers, and factory flange nuts.




I then drilled thru the plate into the seat. The seat was hollow in that area, so I drilled the top out to 3/4" so that a socket would fit in to hold the nut.




I set the other plate on top of the rails and shimmed up to make the plate even with the floor. The angle worked out to be 6 degrees.




I set my adjustable square to 6 degrees and mounted it to my surface grinder.

[jstenger]

Here was the fun part. I had to grind a 6 degree angle on the 5/16" nuts, 3/8" nuts, and 3/4" spacers. Only grind a little so as to just make an angled flat spot on each. A spare long bolt was used to hold the nuts while grinding.






I mounted the swivel to the bottom plate with the 1/4" - 20 X 3/4" bolts, washers, and locknuts. I offset it 3/4" to get the center of the seat inline with the center of the steering wheel.




I then mounted the assembly to the rails with the 5/16" hardware. You can see the 3/8" nuts used as spacers on the left, and the 3/4" spacers on the right. The grinded surfaces go down. The 5/16" nuts that were ground are inside the rails, and cannot be seen in the pic. The grinded surfaces on those go up. All the grinds were necessary so that the nuts would pull flat against the rails and not bend the bolts.

[kaneboats]

Nice work. I just slapped the ole angle iron in there to boost it up to level. Gonna work great.

[jstenger]

Here is the seat mounted. It rotates 180 degrees.

[wolfeman131]

Nicely done!

[NCSUmoomba]

Wow, very thourough, and well done. Doesn't the seat sit more upright now though?

[jstenger]

Yes, the seat is more upright. I made the swivel flat with the floor, and that was the result. If I didn't, it would lean way forward when facing backward. I plan to try it out this weekend. If I don't like it, I am going to raise the front of the seat above the swivel. That way the swivel will stay flat and the seat will be tilted back like the stock position no matter which way it is facing.

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[motosno963]

i like..i wanna do this on the outback