If you want to cycle efficiently and injury free, it’s important that you know how to adjust your bike saddle. A correctly positioned bike saddle makes your bike more enjoyable to ride, as well as being more efficient. The bicycle seat is the main point of contact between you and your bike and having the correct saddle height and position maximizes pedaling efficiency while reducing the risk of knee injuries. Your leg muscles are most effective when they’re almost fully extended through the pedaling motion, so getting your saddle height correct is very important.
Adjust your saddle height by loosening the clamp where the seat post slides into the frame. Raise or lower the post as needed to get the saddle somewhere close to the estimated height and then tighten the clamp.
Get on your bike and place the ball of your foot directly on top of the pedal axle point, when the crank is at the bottom of the rotation. Your leg should be just very slightly bent. If it’s too bent you will need to raise the seatpost, and if your leg is too straight you should lower the post. Another way to check this is place the heel of your foot over the pedal axle. Your leg should be perfectly straight in this position.
Saddle angle and position are adjusted by loosening the seat adjusters under the seat. The type of adjuster can vary, but these often have several of parts so be careful to only loosen the clamp enough to move the seat around.
Your seat angle should be horizontal, but you may want to play with this adjustment. Women often like to have the nose pointing just slightly downward, while men often feel more comfortable with the nose pointing slightly upwards. Personal preference is the key, and you may need to tweak this over several rides.
Using the two rails that the under seat clamp tightens onto, you can adjust the seat to slide forward and backward, which shifts your body’s position in relation to the bottom bracket. For proper positioning, place the ball of your foot on the pedal axle with the crank arm pointing directly forward. If your seat is in the correct position your knee should be directly above your pedal axle.
Following these adjustments, tighten all of your seat bolts and go for a test ride. You may have to make further small adjustments after your next few rides, until you find the seat position that is most comfortable for you.