rmk2112, thanks a lot! This is a pretty sweet mod, and definitely more ergonomically better storage. I've been acquiring parts here all fall and finally got around to start doing this. So far, I'm pretty happy. I don't want to hijack your thread, but I have some hints and suggestions for anyone else who may be interested in doing this:
The seat cover doesn't need to come off (although, it's easier). There are two stapled pieces of fabric right behind the holes where the nuts go...pull the staples out and the upper washers can be jimmied in there.
As far as the washers go, the upper washers need to be 3/4" OD and 3/8" ID. the lower washers need to be 1" OD and 3/8" ID. All of mine are stainless steel, and I couldn't find 3/8" fender washers that were smaller than 1 1/4" OD, so I bought 1/4" fender washers (1" OD) and drilled them out to 3/8" ID.
I wanted the washers to fit the hole better, so I took a bolt, put the washer on it, put it in a 13/16", 1/2" drive socket and hit the bolt with a hammer to make the washers concave.
In between the finished seat hardware and the seat post, I used a concave-type washer that had rubber molded to it. I installed these as I put the bolt through so the rubber faced the seat post. I figured it would grip better this way.
It is VERY important that the RivNuts are at LEAST .180" grip range. Anything smaller and it won't grip both washers.
As of right now, mine isn't completed yet, but I plan on trimming the OEM gas can rack just a little bit (because the seat post and the gas can rack interfere roughly 1" - 1 1/4"), so it still has a factory appearance. Between the post and the rack, there will still be enough room for all the mounting hardware for everything, so it all should still fit nice and tight. This only really needs to be done on the SwitchBack, 144" and 151" RMK's, because the gas rack covers up the rear cooler inlets. The longer RMK's don't need to do this because the shovel rack covers up the rear cooler inlet. I think it would be really slick to find a longer shovel rack and mold it somehow to the shorter shovel rack, so it's the best of both worlds. If this were the case, a craigerbuilt quick release gas-can rack would adapt nicely in this area between the seat post and the rear cooler (total of 8 3/4" length, craigerbuilt system is only 7 1/2"). If anyone is willing to donate the longer RMK shovel rack, I'm accepting!!!!(hint, hint)
