Determining correct frame size
All production (non-custom) bikes are designed to fit the average proportioned male, but unless your personal
dimensions are way off the charts, a production bike will generally work quite well for you. Click on How To Fit A
Bicycle on the Peter White Cycles website for a great article on bike fit.
If you have a bike already, and you like that riding position and want to duplicate it, you can take certain
dimensions from that bike to achieve the same fit.
All production (non-custom) bikes are designed to fit the average proportioned male, but unless your personal
dimensions are way off the charts, a production bike will generally work quite well for you. Click on How To Fit A
Bicycle on the Peter White Cycles website for a great article on bike fit.
If you have a bike already, and you like that riding position and want to duplicate it, you can take certain
dimensions from that bike to achieve the same fit.
Follow these steps to duplicate position from another
bike (see diagram at right):
1. Measure from center of BB to top of seat surface
along axis of the frame's seat tube.
2. Drop a plumb line from the tip of the saddle and
measure distance from there to center of BB.
These dimensions position the seat in relation to the BB.
3. Measure from tip of seat to center of handlebar,
parallel to the floor. This positions the reach.
4. Measure from the top of the saddle surface directly
above the seat post, to the floor. Make sure you
measure perpendicularly to the floor.
5. Measure from the centerline of the handlebar to the
floor. Make sure you measure perpendicularly to the
floor.
These two measurements allow the stem height to be
positioned correctly in relation to the seat height.
Measure twice (at least)! If possible, metric dimensions
are preferred, easier to work with.
All you need to do is send or tell us the 5 measure-
ments and we can do the rest. Please also include your
height and inseam measurement (crotch to floor,
barefooted). If we have any questions, we'll let you
know.
bike (see diagram at right):
1. Measure from center of BB to top of seat surface
along axis of the frame's seat tube.
2. Drop a plumb line from the tip of the saddle and
measure distance from there to center of BB.
These dimensions position the seat in relation to the BB.
3. Measure from tip of seat to center of handlebar,
parallel to the floor. This positions the reach.
4. Measure from the top of the saddle surface directly
above the seat post, to the floor. Make sure you
measure perpendicularly to the floor.
5. Measure from the centerline of the handlebar to the
floor. Make sure you measure perpendicularly to the
floor.
These two measurements allow the stem height to be
positioned correctly in relation to the seat height.
Measure twice (at least)! If possible, metric dimensions
are preferred, easier to work with.
All you need to do is send or tell us the 5 measure-
ments and we can do the rest. Please also include your
height and inseam measurement (crotch to floor,
barefooted). If we have any questions, we'll let you
know.
If you're starting from scratch, the chart to the right
will get you in the ball park, assuming you are of fairly
average proportions. These sizes are assuming an
aggressive (but not racing) style of riding. Frame sizes
(measured in cm, center to center) are across the top,
rider height in the left column, and suggested stem
extensions are in the body of the chart.
For example, for a 6'1" person with standard
proportions, buying a 55cm size, the recommended
stem extension would be 120mm. With longer
legs/shorter torso, you might want to go to the 61cm
size, with a 100 or 110mm stem. Also, if you want a
more upright position, the stem can be mounted higher
on the steerer tube, and a shorter extension can be
used.
Again, you can contact us with any questions about fit.
will get you in the ball park, assuming you are of fairly
average proportions. These sizes are assuming an
aggressive (but not racing) style of riding. Frame sizes
(measured in cm, center to center) are across the top,
rider height in the left column, and suggested stem
extensions are in the body of the chart.
For example, for a 6'1" person with standard
proportions, buying a 55cm size, the recommended
stem extension would be 120mm. With longer
legs/shorter torso, you might want to go to the 61cm
size, with a 100 or 110mm stem. Also, if you want a
more upright position, the stem can be mounted higher
on the steerer tube, and a shorter extension can be
used.
Again, you can contact us with any questions about fit.
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Bicycle fitting is a
subject most
people find quite
mysterious. Fitting
systems with charts
and graphs,
computer software,
measuring devices
and "rules of
thumb" make for a
lot of confusion.
But I believe it's
really quite simple.
Bicycle fit involves
compromises.
Compromises
between comfort
and performance,
quick acceleration
and handling
stability, top speed
and "taking in the
scenery".
From "How To Fit A
Bicycle", by Peter
Jon White
subject most
people find quite
mysterious. Fitting
systems with charts
and graphs,
computer software,
measuring devices
and "rules of
thumb" make for a
lot of confusion.
But I believe it's
really quite simple.
Bicycle fit involves
compromises.
Compromises
between comfort
and performance,
quick acceleration
and handling
stability, top speed
and "taking in the
scenery".
From "How To Fit A
Bicycle", by Peter
Jon White