Adjusting the Wheel Size (Wheel)
If you start from Time of Day display, repeat steps 1-5.
6.Start with the display showing Wheel.
7.Press OK to start setting the wheel size.
8.Scroll up or down to adjust the wheel size. Press OK.
You have the following alternatives to find out the wheel size of your bike:
METHOD 1.
Look at the wheel of your bike and find the wheel diameter in inches printed on it. On the chart below, find your wheel diameter in inches or in ERTRO reading. Match it to the wheel size in millimetres on the right.
| ERTRO | Wheel size diameter (inches) | Wheel size setting (mm) |
|
| 26x1.25 | 1953 |
| |
| 26x1.5 | 1985 |
| |
| 26x1.75 | 2030 |
| |
| 26x1.95 | 2050 |
| |
|
| 26x1 1/8 Tubular | 1970 |
|
|
| 1952 |
| |
| 700x20C | 2086 |
| |
| 700x23C | 2096 |
| |
| 700x25C | 2105 |
| |
|
| 700C Tubular | 2130 |
|
|
| 28 (700 B) | 2237 |
|
METHOD 2.
Mark the tread of the front tire with a line and roll the tire perpendicular to the ground. You can also use the valve as a mark. Mark a line on the ground. Move your bike on a flat surface straight ahead for one complete wheel rotation. Check that the tire is perpendicular to the ground. Draw another line on the ground exactly where the mark on the front tire touches the ground.
Measure the distance between the two lines on the ground. _________ mm
Substract 4 mm to account for your weight on the bike to
get your wheel circumference. | - 4 mm |
This is the value you must set on the meter. | _________ mm |
The wheel size is always indicated in millimeters as this is more accurate. Resetting the monitor enters the default values.
B 34 | B 35 |
