i just bought some nice ortleib back packer plus rear panniers, their biggest one.

on image 602 you can see one of the bags is way far back and this makes it a little off balance. so the other bag i adjusted the up a little which causes a wee bit of of heel strike but its very well balanced. i am currently testing both scenarios. so far it only gets a little strike if the bag is fully loaded though, not when half full. and honestly, you can live with that heel strike by adjusting your feet on the pedals.

honestly, you could easily fashion two longer extensions to get this rack back even further, but I am satisfied with it as is. I don't think you could get any better other then those racks with the extra tubes for panniers.

being a newish member, every time i try to post pics from links they don't work, so my account must not be premium. so all i can do is post these thumbnails you see below.