Sizing a bike is not the same as fitting a bike!
Understanding that "Everybody" is custom, the bicycle must be a continuation of the cyclist.
Sizing, a bike can be a problem if your only concern is the stand-over height, rather than top tube and stem length. Of more concern is to find the "Effective Body Extension" for your hip, spine, shoulders, and arms. Some call this neutral spine. This can only be done after you find the correct cleat placement, saddle height, saddle fore aft and the correct saddle angles. Then, and only then, can you determine the correct stem length, stem rise, spacers, and handlebar rise.
For handling and dismounting the bike, the frame needs to fit you in terms of crotch clearance above the top tube. Have your bike shoes on and hold the top tube between your legs. Look for at least 2 inches clearance as you stand just ahead, and over the bottom bracket. Many pros will have as much as 4.5 inches of clearance.
Another method is to pull the top tube firmly up into the crotch, again with your bike shoes on. There should be 2 inches to 4.5 inches from the ground to tires.
Determining frame size
The only tools needed to size your bike are 1) level or book, 2) a metric tape, and 3) a calculator!
This is a very simple sizing process!!! It takes very little time.
- Take your inseam length while standing in your socks with your feet about 4 to 6 inches apart, back against a wall.
- Hold your level or book under your crotch (pull up firmly).
- Use the tape from the top of the level or book, and measure to the floor.
- Read the tape in centimeters.
- Multiply the (cm) measurement by .67
- Mountain Bikes, subtract 11 cm and round to the lower number, road bikes round to the nearest even cm.
- This should roughly be the length of the seat tube on a properly sized frame.
This should give you a good reference point on size, so that you can obtain a precision fit.
Our precision bike fitting system
It took many years of testing to develop our software. The primary aim was to provide techniques that support and provide protection to soft and hard tissues without limiting their function.
We used the very best tools known. Force plates to read the forces under the foot, EMG (electromyography) to study muscle function through the inquiry of the electrical signal emanating from the muscle. New technology allowed us to observe synergies in the energy patterns of muscles that cannot be seen with the naked eye. We observed muscle energy at rest and as it changed continuously over the course of a movement.
Our product is a quantitative solution to place your body, and its muscles in its their best position. By taking precise measurements of the bike rider's anatomy, and obtaining the correct bike geometry, we can prescribe a position that offers the best "range-of-motion", and the best "line-of-pull" for your muscles to perform work. Amateurs and World Champions alike benefit from our methods because we focus on the most scientific approach, biomechanic accuracy, and consistency while utilizing the latest tools available.
We have no bias as to what type of bike you ride, or the color of your bar tape, however, we do want you make sure you have the best fit possible. Consultations are free, and are a great way to prepare for changes, if any, that can be made to your current setup. Give us a call or stop by. We look forward to hearing from you.
WobbleNaught Bike fit: 200.00 first session includes setup of 1 bike. Additional sessions: 125.00
Special: 300.00 session includes setup of 2 bikes, plus a set of custom footbeds. You can pre-pay for your fitting session by using our store, or buy a fit for a friend! We will call you as soon as possible to schedule your fitting session. All fitting session are performed by Matt Goforth, a trained Wobble Naught dealer, and a Certified USA Cycling Coach.
|
