I went out to my bike (Schwinn Trailway Hybrid) yesterday using the allen head bolt UNDERNEATH) the stem(?) was able to adjust the handlebar almost 90 degree more upright than what it was and allowed me to ride more upright (in the saddle) than the factory adjust. I had to adjust the handlebar angle and the brake/sprocket assembly as well. I was satisfied with the maximum upright adjustment I was able to do. I really like this bike even though its "Off the rack" rather than custom built. Rode it over 7 miles last evening without strain or muscle cramps and feel as if I could have gone a lot further. 72 and still riding.