ridden. To enter a mileage into the odometer, press the "MODE" button until the flashing digit is correct. (Note: The "MODE" button may be held to scroll to the correct digit.) Press the "FUNCTION" button to select the next digit to the right. Repeat this process until all five digits are entered as your existing mileage.
3.Wheel Circumference Selection To set the circumference for the type of tires you are using, you can use Specialized’s exclusive "Easy Calibration Mode" or measure your actual tire circumference by the rollout method. Two different tire diameters may be entered into the computer’s "Second Wheel Option."
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Easy Calibration Mode:
Your SpeedZone Comp 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 will display the tire size on its LCD display screen. (See figure
5)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
FIGURE 5: EASY CALIBRATION SCREEN
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.
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 pressure, 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 con-
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