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
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
Tire Size
Wheel Circumference (mm)
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
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
Appendix
75
Summary of Contents for D2 MACH1
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