Originally Posted by
Happy Feet
That s what I was thinking.
I do not know carbon well enough but I see strapping a load to the seat, plus rider weight, flexing on a small point. It's the flexing I would question. A rider usually takes the load somewhat on their legs but a pack would just bounce up and down on a seat cantilever of sorts.
There's no requirement to use a carbon seat post. I use an Al seat post and bars on a carbon frame.
If you mount a saddlebag properly there is very little cantilevering or motion, but it's still nice to keep the weight to a minimum. My Carradice Camper fully loaded weighs 12lbs and is supported by loops on the saddle and a strap around the seat post. I have done thousands of miles with this setup and never had an issue.
