It has what is called an internal seatpost clamp (with adjustment screw facing upwards).
How do I loosen the seatpost to adjust the seat height. My initial attempt at loosening the one visible bolt had no effect on loosening the seatpost (up until now I am only accustomed to the good old seat clamp).
Having spent top $$$ I am reluctant to use any force whatsoever (I have a bad history in this regard
