Originally Posted by
RedRider2009
I live in Wisconsin, the weather can vary a lot, so in the morning it may be 50, in the afternoon it may be 80. I already have a saddlebag on there, with the tools and tubes etc. The bigger bag in question would mostly be used to carry extra clothes, a camera, maybe a lunch in some of my rides go into the boonies. The size of that bag seems just about perfect, however the real question is whether it is safe to mount on carbon. Thanks for your input guys!
Some C.F.Seat post's are very light with thin walls and I would not mount anything on those. The thicker ones that are overbuilt may be OK and some are even C.F. over an alloy tube.
Providing you can keep the clamp tight enough so the box does not move- and providing you do not overtighten to Stress the post- it should be OK.
I would not chance it and an alloy seat post would be the best choice. They are not that expensive either.