Originally Posted by
N00dle
Sorry. So the Hardcore fenders have 2 single stays per side on the rear so the eyelets overlap and with the rack installed makes it more difficult to judge the lengths of bolt needed and the way it attaches to a single braze-on compared to a single vstay with a single eyelet.
Max fender width of course would be 45mm.
Well then it sounds like you have two choices...
1) Mount the fender and stack the stays along with the rack. You'll need longer screws, but how much longer is dependent on the rack and stay thickness. The good news is that the screws are cheap, so make your best guess and buy a few pairs in different lengths. If you stick with bicycling you'll use all of them eventually. If you're concerned, track down stainless steel so they don't rust.
2) Buy a set of
these fender stays which combine the two stays into one. The screws you're already using for the rack might even have enough length. If not, take one with you to the hardware store and buy a pair slightly longer -- stainless or whatever.
Put a single drop of BLUE locktite on the threads before tightening down on the final fit.
-Kedosto
Edited to add: 3) Cut off the middle stay mount so the fender will only mount at three attachment points; down at the bottom bracket, the seatstay bridge, and single stay at the tail end of the fender.