Filter
Top Products
Roll Out Method
The roll out method will provide the
most accurate computer calibration
and can take into account variables
such as inflation pressure, rim width
and rider weight.
1. Extend a tape measure out to
3000mm (120 inches) and lock
it in place.
2. With your tire inflated to its proper
p re s s u re, place the valve at the 6:00
position (at the bottom) directly over
the start of the measuring tape.
3. Roll the wheel one complete revolu-
tion until the valve stem is again at
the 6:00 position. Read the tape
directly under the valve and note
the distance in millimeters.
(To convert inches to millimeters,
multiply inches by 25.4). Use this
number to replace the default
(default values are 2073 for wheel
one, and 2134 for wheel two)
when programming your computer.
(See figure 8)
9
Easy Calibration Mode:
Your SpeedZone Pro has been
preprogrammed with the following
14 Specialized tire sizes:
26 X 1.0 26 X 2.2
26 X 1.25 650c X 20
26 X 1.5 700c X 20
26 X 1.95 700c X 23
26 X 1.9 700c X 26
26 X 2.0 700c X 32
26 X 2.1 700c X 38
When using Easy Calibration Mode,
the SpeedZone Pro will display the tire
size on its LCD display screen. (See
figure 7) The Easy Calibration Mode is
accessed by entering the odometer
(ODO) mode and holding down the
"FUNCTION" button for three seconds.
The display will now show the currently
selected tire size for wheel option #1.
To scroll through the preprogrammed
tire sizes tap both the "MODE" and
"FUNCTION" buttons simultaneously.
When you reach the desired tire size
press the "FUNCTION" button once to
select it and enter Easy Calibration
Mode for wheel option #2. Follow the
same procedure to program the wheel
#2 tire size and tap the "FUNCTION"
button to exit Easy Calibration Mode.
8
S t e m
Wheel
C i rc u m f e re n c e
Roll Forw a rd
FIGURE 8: ROLL OUT METHOD
FIGURE 7: EASY CALIBRATION SCREEN
01_SDZN_PRO_USA_1-24.qxd 1/24/01 12:09 PM Page 8