I recently posted a question about handlebar bags for CF bars and got a lot of good responses. However, I have the FSA Wing bar and none of the clamps would fit so that was out of the question. My next option is a seat post rack that I could put some supplies in for ride marshaling charity rides. I have a Madone 6.2 and was wondering if the seat post and mast was strong enough for a 1.5lb rack with about 5lbs of stuff in it. This wouldn't be a everyday mount but maybe two or three times a year for long rides.
Thanks for your help.