Bike fitting is a complex topic as it is related to art and science. The purposes of bike fitting to deliver a comfort, performance and full potential of riding the road bike. To make it easy understandable to everyone, there are 3 key important parameters of bike fitting which is sufficient to establish comfort and performance riding.
Before do that, warm up your body by riding the current adjusted position bicycle. Get a helper (friend, brother & sister), measurement tape, and pendulum string.
Step 1: Saddle Height Position
Ideally, at the bottom of a pedal stroke you want to feel a slight bend in your knee. Aim to come within 80% or 90% of full leg extension or 10 – 20 Degree of bending.
NOTE: A small change of height could affect much on the degree of knee bend. Do it slowly.
Step 2: Fore & Aft Saddle Position
- Put the leg on the pedal
- Turn the pedal crank (at 3 o’clock position) parallel the ground
- put a pendulum string from the knee
- The pendulum ball should meet the pedal axle position
NOTE: If the pendulum ball is far forward from pedal axle, adjust the saddle backward. Else adjust the saddle forward.
Step 3: Horizontal Body Position
Shorter handle stem: Create more comfort / touring riding
Longer handle stem: create more bending of body (aero dynamic)
Handlebar width: 400mm, 410mm, 420mm. It is depending the rider preference. Width of the handle should slight wider than rider shoulders.
The most important thing bike fitting is COMFORT instead of following Pro-level bike fitting figures.
* above mentioned bike fitting steps are just for your own reference.