http://www.bikeforums.net/folding-bi...n-thorusa.html

I might be able to find one of these suspension racks ....
these would allow what you are trying to do .. I wouldn't hang 50 lbs of panniers on them ... but they are as stable as you can get with single stays ...
the nice thing is that u can take the quick rack completely off without tools
The seatpost clamp needs a longer bolt to get around the 34 mm seatpost again I might have one

thor