What I did was built the hexagon out of 50mm square tubing and mounted it on the front and back suspension mounts and also with a removable piece on the top to secure the to hexagons.
To make moveing it easy it I used 2 lengths of the same Square tubing then as a spacer used another tubing in between
then used a Big base plate welded togeter to the outer pieces of tubing and fitter wheels on the outer corners
so if you roll the hexagon into the wheelers then the weight acts as a the clamping force by scueezing both the outer pieces together and clamping the Hexagon tube firmly inbetween the roller frames
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Below is all the notes I have
Step one: Build a 30 degree jig out of 2 x 2 angle iron; Weld the two 23 inch angle iron sections (long point to long point) with 15 degree cuts @ a perfect 30 degree angle. To verify true degree reference length of A sq. + B sq. = C squared.
Step two: Cut your 0.23622047 decimal inch wall thickness 2" x 2" tubing @ 15 degree cuts to length. Mark all lengths, 21 inches and 23 inches. (Please see foot note). Pair the correct to plans sections in two, double check and make minor adjustments if needed. Break the rotisserie into a top and bottom, each should share parallels angles and one side. Using Jig, weld pairs, then weld pairs together. Now you have a complete multigon making a 360 degree circle, I.E. 12 30 degree angles make 360 degree multigon. Repeat this step for second multigon.
Step three: Cut your multigon "B" to a top and bottom, note location to plans. Insert "b" solid stock in bottom half and weld in place @ all four locations. Slide top half of multigon back in place and drill out a hole for a holding pin. Remove top half.
Step four: Weld "A" in place. Note "a" (receives a 2 inch x 2 inch tubing)
Step five: Make your mounting bracket arms and plates. Mount the plate's (flat 1/2" steel plate) in place on your vehicle, and get ready for some muscle work. Slide the arms in place on the multigon. Raise the vehicle to center point of gravity. Raise the bottom half multigon with all in place, steady the bottom half w/ tack welded temporary stabilizer. Weld the arms "C & D" to the 1/2 plate that is bolted on your bus. Note: the bracket arms should be removable from the "A" pockets. Note: "c & d" were designed for barndoor bus, when building rotisserie for non barndoor; mount plates in place and correct the dimension width on arms prior to welding. Allow 1/2 inch of total play.
Step six: Build a safety bar. See jpg. This is very important. You don't want the bus rolling back on your ass or squashing your precious hands! Please note safety bar jpg. Use this bar.
Step seven: Lift the top half's of the multigon's in place and safety pin. Roll that bus over, safety bar the position and fix that nasty rust to factory standards. If its worth doing, do it right!
Foot note: 21 and 23 inch length's can all be changed to 23 inches. This will simplify the layout but make the overall height taller and you should consider the height of your garage opening prior to making this change.
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