I do sit upright but still lean into the bars. Not sure how best to describe that. I guess a good way is that some of my weight is carried in my arms as all my weight is not on my butt since there is some lean. I'm not leaning "Over" the bars obviously but I'm not relaxed in the back because it's straight up. My legs are perfect now, I can get a full rotation and am not totally straight legged. However, compared to when I got the bike and purposely had the seat low while practicing riding in VERY urban traffic-think Hollywood; since then I hadn't adjusted the bars. My arms are stretched pretty far, it feels like that to me anyway. I have a short torso and short arms and think that now that I've significantly raised the seat (barely tip toe touch which is proper fit) I"m thinking the bars need a tad adjusting too. Thanks for the comment and diagram!
Originally Posted by
JanMM
The sit bones are the ischial tuberosities. Not sure how they relate to rolling your hips forward.
The picture in your profile makes it look like it would be hard not to be upright on that bike.
Raising or lowering the seat should be done only to get the proper leg extension for pedaling; your leg should be slightly bent when your foot is at the bottom of the crank rotation.