Getting the perfect bike fit begins with having the right frame for your height. One can adjust the cockpit depending on your riding style and comfort. People really get very scientific about the bike fit, for it dictates if the bike is right for you or not. It is as simple as if your shirt does OR does not fit you. If it does, well and good. If it doesn’t, you look sloppy.
(If ever you get the chance to steal one of these bikes, choose the right bike size for you.)
Seatpost adjustment— Is there a rule of thumb?
When we were young, we had to adjust the seat post all the way up so that the pedaling would be “easier” with extended legs. Before bombing the downhill, we dropped the seat all the way down, so it won’t hit the crotch area, we won’t be sitting on the saddle anyway. We don’t do that anymore.
Here are quick and easy steps to determine if you have the right seat post height for your bike:
1. We assume that the frame is right for your height, sit on the saddle and let a friend balance the bike ( hold on to the handlebar).
2. Point the left crankset to the 6 o’ clock position, and place your heel on the pedal.
3. If your left knee is bent while the crank is all the way down, you should raise the seat post. The heel should be resting easy on the pedal. Adjust the height of the seat post accordingly.
Remember, when you pedal, you use the ball of the foot. The ball of the foot is the one that should “feel” the axle of the pedal.
The correct pedaling position:
The knee should have a slight bend. The bend should produce a 165 degree angle. If your leg is straight up (180 degree angle) when the pedal is at the six o’ clock position, the saddle is way too high. Lower the seat post a little bit.
Ask another person to take a picture of you (SMILE FOR THE PICTURE!), side view while riding your balanced bike. See if the bending of the leg has the correct obtuse angle. If it is too straight, lower the seat post. If it is too bent, go a little higher.