User's Manual

Females Percentile 20–29 30–39 40–49 50–59 60–69 70–79
Superior 95 49.6 47.4 45.3 41.1 37.8 36.7
Excellent 80 43.9 42.4 39.7 36.7 33 30.9
Good 60 39.5 37.8 36.3 33 30 28.1
Fair 40 36.1 34.4 33 30.1 27.5 25.9
Poor 0–40 <36.1 <34.4 <33 <30.1 <27.5 <25.9
Data reprinted with permission from The Cooper Institute. For more information, go to www.CooperInstitute.org.
FTP Ratings
These tables include classifications for functional threshold
power (FTP) estimates by gender.
Males Watts per Kilogram (W/kg)
Superior 5.05 and greater
Excellent From 3.93 to 5.04
Good From 2.79 to 3.92
Fair From 2.23 to 2.78
Untrained Less than 2.23
Females Watts per Kilogram (W/kg)
Superior 4.30 and greater
Excellent From 3.33 to 4.29
Good From 2.36 to 3.32
Fair From 1.90 to 2.35
Untrained Less than 1.90
FTP ratings are based on research by Hunter Allen and Andrew
Coggan, PhD, Training and Racing with a Power Meter
(Boulder, CO: VeloPress, 2010).
Wheel Size and Circumference
Your speed sensor automatically detects your wheel size. If
necessary, you can manually enter your wheel circumference in
the speed sensor settings.
The tire size is marked on both sides of the tire. This is not a
comprehensive list. You can also measure the circumference of
your wheel or use one of the calculators available on the
internet.
Tire Size Wheel Circumference (mm)
20 × 1.75 1515
20 × 1-3/8 1615
22 × 1-3/8 1770
22 × 1-1/2 1785
24 × 1 1753
24 × 3/4 Tubular 1785
24 × 1-1/8 1795
24 × 1.75 1890
24 × 1-1/4 1905
24 × 2.00 1925
24 × 2.125 1965
26 × 7/8 1920
26 × 1-1.0 1913
26 × 1 1952
26 × 1.25 1953
26 × 1-1/8 1970
26 × 1.40 2005
26 × 1.50 2010
26 × 1.75 2023
26 × 1.95 2050
26 × 2.00 2055
26 × 1-3/8 2068
Tire Size Wheel Circumference (mm)
26 × 2.10 2068
26 × 2.125 2070
26 × 2.35 2083
26 × 1-1/2 2100
26 × 3.00 2170
27 × 1 2145
27 × 1-1/8 2155
27 × 1-1/4 2161
27 × 1-3/8 2169
29 x 2.1 2288
29 x 2.2 2298
29 x 2.3 2326
650 x 20C 1938
650 x 23C 1944
650 × 35A 2090
650 × 38B 2105
650 × 38A 2125
700 × 18C 2070
700 × 19C 2080
700 × 20C 2086
700 × 23C 2096
700 × 25C 2105
700C Tubular 2130
700 × 28C 2136
700 × 30C 2146
700 × 32C 2155
700 × 35C 2168
700 × 38C 2180
700 × 40C 2200
700 × 44C 2235
700 × 45C 2242
700 × 47C 2268
Symbol Definitions
These symbols may appear on the device or accessory labels.
WEEE disposal and recycling symbol. The WEEE symbol is
attached to the product in compliance with the EU directive
2012/19/EU on Waste Electrical and Electronic Equipment (WEEE).
It is intended to deter the improper disposal of this product and to
promote reuse and recycling.
48 Appendix