Frame Sizing Instructions

We recommend printing this page for reference.

Fitting Information:
To make sure that your new Bruce Gordon bicycle fits correctly, we'll need some information about your present bike and about your body. These measurements are important. Follow the instructions; measure carefully; and don't guess. Record all measurements in either centimeters or inches.

Measurements to take from your bike
(NOTE: These measurements are meaningless if your present bike is not a good fit.):

1. Type of bike: (check one)

Road____ or Mountain____

2. Frame size:

This is the length of the seat tube, measured from the center of the bottom bracket to the intersection of the centerlines of the top tube and the seat tube.

Frame size is:______

3. Stand-over height:

Means just what it says, and measures the all-important height from the ground to the top tube. For consistency in measurement, we want you to measure straight down to the ground from a point half way along the top tube. with the bike on a level surface. Be sure to measure from the top of the top tube.

Stand-over height is:________

4. Top tube / stem length:

This is less obvious, but important to your comfort. Before measuring, look at the frame illustrations. What we're looking for is Dimension A, which is a horizontal distance; and Dimension B and Dimension C, which are actual dimensions. If your top tube is not parallel to the ground, you will have to be extra careful to get an accurate horizontal measurement.

With the measuring tape parallel to the ground, measure from the intersection of the centerlines of the top tube and the head tube to the intersection of the centerlines of the top tube and the seat post, and record as Dimension A. Then measure you stem from the center of the stem bolt to the center of the handlebar clamp, and record as Dimension B.

Finally, measure from the center of the handlebar clamp to where an imaginary line extending up from the center of the seat post would intersect with the top of the saddle,and record as Dimension C.

Dimension A is:_____ Dimension B is:_____ Dimension C is:_____

Measurements to take from your body:

1.

Inseam: This is the distance from the bottom of your pelvic bone to the floor with the shoes you will wear when cycling. It is the most important dimension for correctly fitting your bike. Follow these instructions, and don't guess. You'll need a faithful and trusted assistant. You can't do this accurately alone.

 

a.

Put on the shoes you will wear when riding your bike.

b.

Stand with your back flat against a wall and your feet two inches apart.

c.

Hold a thin book or record album in your crotch so that it is firmly against the bottom of your pelvic bone and its top is parallel to the floor. Have your assistant measure from the floor to the top of the book. Note that it is impossible to take this measurement accurately with you back against a wall unless you have an assistant.

d.

Relax; repeat the procedure at least two more times; and average the results.


Inseam measurement is:_____

2.

Height: Measure your height in your riding shoes anyhow.


Height in riding shoes is:_____