Operation Manual

Males Percentile 20–29 30–39 40–49 50–59 60–69 70–79
Superior 95 55.4 54 52.5 48.9 45.7 42.1
Excellent 80 51.1 48.3 46.4 43.4 39.5 36.7
Good 60 45.4 44 42.4 39.2 35.5 32.3
Fair 40 41.7 40.5 38.5 35.6 32.3 29.4
Poor 0–40 <41.7 <40.5 <38.5 <35.6 <32.3 <29.4
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
The wheel size is marked on both sides of the tire. This is not a
comprehensive list. You can also use one of the calculators
available on the Internet.
Wheel Size L (mm)
12 × 1.75 935
14 × 1.5 1020
14 × 1.75 1055
16 × 1.5 1185
16 × 1.75 1195
18 × 1.5 1340
18 × 1.75 1350
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 × 1-1/4 1905
24 × 1.75 1890
24 × 2.00 1925
24 × 2.125 1965
Wheel Size L (mm)
26 × 7/8 1920
26 × 1(59) 1913
26 × 1(65) 1952
26 × 1.25 1953
26 × 1-1/8 1970
26 × 1-3/8 2068
26 × 1-1/2 2100
26 × 1.40 2005
26 × 1.50 2010
26 × 1.75 2023
26 × 1.95 2050
26 × 2.00 2055
26 × 2.10 2068
26 × 2.125 2070
26 × 2.35 2083
26 × 3.00 2170
27 × 1 2145
27 × 1-1/8 2155
27 × 1-1/4 2161
27 × 1-3/8 2169
650 × 35A 2090
650 × 38A 2125
650 × 38B 2105
700 × 18C 2070
700 × 19C 2080
700 × 20C 2086
700 × 23C 2096
700 × 25C 2105
700 × 28C 2136
700 × 30C 2170
700 × 32C 2155
700C Tubular 2130
700 × 35C 2168
700 × 38C 2180
700 × 40C 2200
Symbol Definitions
These symbols may appear on the device or accessory labels.
Alternating current. The device is suitable for alternating current.
Direct current. The device is suitable for direct current only.
36 Appendix