Originally Posted by Carbonfiberboy

Good for you for writing down and saving your measurements. I need to do that! What if my bikes were all stolen? Well, I think I could recreate it all by feel, but still.

I doubt that saddle setback on a safety bicycle has anything to do with it. I always point out: "Ever try to measure saddle setback on a recumbent?" Those riders seem to do just fine without measuring KOPS.

Saddle setback is about balance, which is to say, weight on the hands. Move it back to reduce, forward to increase. What changes with fore-and-aft adjustment is really hip angle and center of gravity. It's actually all the other way 'round: the standard forward lean of the road position combined with KOPS and correct knee angle (saddle height) yields the usually advised hip angle. If you want a TT position, the saddle moves way forward and thus KOPS is totally out of the question. However TT and tri riders do just fine that way. Similarly, if one wants to sit upright, the BB and pedals can be moved way forward if that's desired, see foot-forward comfort bikes: Fuji Bikes | Barnebey for instance.