Here's a link to what appears to be exactly the same hinges I used, mine too were sized for 1.75" x .095" wall tube, I just took a little off so they would fit in .120" wall:
RZR XP1000 / RZR 800 / Yamaha / Can-Am. Universal Heavy Duty Door Hinge. 8 Total PCS. 2 x Nylon Lock Nut. 2 x Allen Bolt.
www.ebay.com
The mount brackets are where the work is, I used some left over 3/8" x 4" steel flat bar, first I made a template from cardboard and cut the general shape and notch for the cast gusset on the hinge, then with a hammer tapped on the cardboard to transfer the bolt pattern to it and then used a hole punch, once I had the cardboard close I transferred that to plywood which allows you to account for the thickness then transferred that to steel. I made them each in two pieces to get the 90dg. If you can source some 3/8" x 4" angle that would make it easier. Fitting up the hoops is a two person job and getting the hinges parallel to each other is just plain a PITA...you will tack and cut a couple times before you get good alignment.
I've still got some finish work to do on the hinge welds but I need to move forward with latching, tire mounting, box mounting and a small rack on top of the box .
It's no small amount of work, but in the end I'll have dual swing outs with all that for less than the cost of a single aluminess carrier (not that there's anything wrong with their offering, I'm just unwilling to pay $975 for a single swing out).
