Originally Posted by
Thulsadoom
A touring frame will usually have a relaxed seat tube angle. A regular road bike or racing bike will have a seat tube angle closer to 90 degrees, relative to the road. If you set up your touring bike with the bars at the same height in relation to the saddle, as a regular road bike, you'll be that much more bent over. Your butt will be way back and your pedals will be way out in front of your knees.
This would not be the case if you set your saddle position properly. Saddle position should be set with with same or very similar knee-over-pedal position (KOP), regardless of the seat-tube angle. So, if a frame has a more relaxed STA, you would move the saddle forward more to achieve KOP compared to a frame with a steeper STA. In other words, your butt should be no further back if your saddle is positioned properly, regardless of STA.