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)

 

 

30-559

26x1.25

1953

 

 

35-559

26x1.5

1985

 

 

44-559

26x1.75

2030

 

 

47-559

26x1.95

2050

 

 

 

26x1 1/8 Tubular

1970

 

 

 

650-20C

1952

 

 

622-20

700x20C

2086

 

 

622-23

700x23C

2096

 

 

622-25

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

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Polar S520, S510 manual Adjusting the Wheel Size Wheel, Method

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