frame bag and wind
I've been using a full frame bag (Apidura Expedition 6L - GREAT product). I hadn't noticed it before, but on windy days I'm finding the bike gets pushed around in cross winds. This was really pronounced when I loaded the bike down with a rear rack and panniers and 30lbs of gear (NOT a touring bike so stability got worse with more weight).
My question is, is it normal for a road bike with a full frame bag to be sensitive to crosswinds? Seems like a silly question but I really didn't notice this when I loaded down the bike with only the frame bag and not panniers.
I suspect geometry and center of balance are factors
I'm using a Specialized Roubaix btw