Looking for a new challenge for the winter months? Try the Iowa Roller Race Series. Here in Iowa we have a race series every winter. Participants ride their own bikes on the Kreitler Alloy Rollers in full race trim: alloy rollers with a flywheel and a "killer headwind" resistance unit. Here Dan Galles (near) and Justin Schnee roll the 2007 Atlas / Hard Core Roller Race in Iowa City. |
Rollerhead Info and Tools:
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53 Tooth Chainring:
Rear
CogGear
InchesCadence
110 rpmCadence
100 rpmCadence
90 rpmCadence
80 rpmCadence
70 rpmCadence
60 rpm12 119.3 39.0 mph 35.5 mph 31.9 mph 28.4 mph 24.8 mph 21.3 mph 13 110.1 36.0 mph 32.7 mph 29.5 mph 26.2 mph 22.9 mph 19.6 mph 14 102.2 33.4 mph 30.4 mph 27.3 mph 24.3 mph 21.3 mph 18.2 mph 15 95.4 31.2 mph 28.4 mph 25.5 mph 22.7 mph 19.9 mph 17.0 mph 16 89.4 29.2 mph 26.6 mph 23.9 mph 21.3 mph 18.6 mph 15.9 mph 17 84.2 27.5 mph 25.0 mph 22.5 mph 20.0 mph 17.5 mph 15.0 mph 18 79.5 26.0 mph 23.6 mph 21.3 mph 18.9 mph 16.5 mph 14.2 mph 19 75.3 24.6 mph 22.4 mph 20.2 mph 17.9 mph 15.7 mph 13.4 mph 20 71.5 23.4 mph 21.3 mph 19.1 mph 17.0 mph 14.9 mph 12.8 mph 21 68.1 22.3 mph 20.2 mph 18.2 mph 16.2 mph 14.2 mph 12.1 mph 22 65.0 21.3 mph 19.3 mph 17.4 mph 15.5 mph 13.5 mph 11.6 mph 23 62.2 20.3 mph 18.5 mph 16.6 mph 14.8 mph 12.9 mph 11.1 mph 24 59.6 19.5 mph 17.7 mph 15.9 mph 14.2 mph 12.4 mph 10.6 mph 25 57.2 18.7 mph 17.0 mph 15.3 mph 13.6 mph 11.9 mph 10.2 mph 52 Tooth Chainring:
Rear
CogGear
InchesCadence
110 rpmCadence
100 rpmCadence
90 rpmCadence
80 rpmCadence
70 rpmCadence
60 rpm12 117.0 38.3 mph 34.8 mph 31.3 mph 27.8 mph 24.4 mph 20.9 mph 13 108.0 35.3 mph 32.1 mph 28.9 mph 25.7 mph 22.5 mph 19.3 mph 14 100.3 32.8 mph 29.8 mph 26.8 mph 23.9 mph 20.9 mph 17.9 mph 15 93.6 30.6 mph 27.8 mph 25.0 mph 22.3 mph 19.5 mph 16.7 mph 16 87.8 28.7 mph 26.1 mph 23.5 mph 20.9 mph 18.3 mph 15.7 mph 17 82.6 27.0 mph 24.6 mph 22.1 mph 19.6 mph 17.2 mph 14.7 mph 18 78.0 25.5 mph 23.2 mph 20.9 mph 18.6 mph 16.2 mph 13.9 mph 19 73.9 24.2 mph 22.0 mph 19.8 mph 17.6 mph 15.4 mph 13.2 mph 20 70.2 23.0 mph 20.9 mph 18.8 mph 16.7 mph 14.6 mph 12.5 mph 21 66.9 21.9 mph 19.9 mph 17.9 mph 15.9 mph 13.9 mph 11.9 mph 22 63.8 20.9 mph 19.0 mph 17.1 mph 15.2 mph 13.3 mph 11.4 mph 23 61.0 20.0 mph 18.1 mph 16.3 mph 14.5 mph 12.7 mph 10.9 mph 24 58.5 19.1 mph 17.4 mph 15.7 mph 13.9 mph 12.2 mph 10.4 mph 25 56.2 18.4 mph 16.7 mph 15.0 mph 13.4 mph 11.7 mph 10.0 mph 50 Tooth Chainring:
Rear
CogGear
InchesCadence
110 rpmCadence
100 rpmCadence
90 rpmCadence
80 rpmCadence
70 rpmCadence
60 rpm12 112.5 36.8 mph 33.5 mph 30.1 mph 26.8 mph 23.4 mph 20.1 mph 13 103.8 34.0 mph 30.9 mph 27.8 mph 24.7 mph 21.6 mph 18.5 mph 14 96.4 31.5 mph 28.7 mph 25.8 mph 22.9 mph 20.1 mph 17.2 mph 15 90.0 29.4 mph 26.8 mph 24.1 mph 21.4 mph 18.7 mph 16.1 mph 16 84.4 27.6 mph 25.1 mph 22.6 mph 20.1 mph 17.6 mph 15.1 mph 17 79.4 26.0 mph 23.6 mph 21.2 mph 18.9 mph 16.5 mph 14.2 mph 18 75.0 24.5 mph 22.3 mph 20.1 mph 17.8 mph 15.6 mph 13.4 mph 19 71.1 23.3 mph 21.1 mph 19.0 mph 16.9 mph 14.8 mph 12.7 mph 20 67.5 22.1 mph 20.1 mph 18.1 mph 16.1 mph 14.0 mph 12.0 mph 21 64.3 21.0 mph 19.1 mph 17.2 mph 15.3 mph 13.4 mph 11.5 mph 22 61.4 20.1 mph 18.3 mph 16.4 mph 14.6 mph 12.8 mph 11.0 mph 23 58.7 19.2 mph 17.5 mph 15.7 mph 14.0 mph 12.2 mph 10.5 mph 24 56.3 18.4 mph 16.7 mph 15.1 mph 13.4 mph 11.7 mph 10.0 mph 25 54.0 17.7 mph 16.1 mph 14.5 mph 12.8 mph 11.2 mph 9.6 mph
42 Tooth Chainring:
Rear
CogGear
InchesCadence
110 rpmCadence
100 rpmCadence
90 rpmCadence
80 rpmCadence
70 rpmCadence
60 rpm12 94.5 30.9 mph 28.1 mph 25.3 mph 22.5 mph 19.7 mph 16.9 mph 13 87.2 28.5 mph 25.9 mph 23.3 mph 20.7 mph 18.1 mph 15.6 mph 14 81.0 26.5 mph 24.1 mph 21.7 mph 19.3 mph 16.9 mph 14.5 mph 15 75.6 24.7 mph 22.5 mph 20.2 mph 18.0 mph 15.7 mph 13.5 mph 16 70.9 23.2 mph 21.1 mph 19.0 mph 16.9 mph 14.8 mph 12.6 mph 17 66.7 21.8 mph 19.8 mph 17.8 mph 15.9 mph 13.9 mph 11.9 mph 18 63.0 20.6 mph 18.7 mph 16.9 mph 15.0 mph 13.1 mph 11.2 mph 19 59.7 19.5 mph 17.8 mph 16.0 mph 14.2 mph 12.4 mph 10.7 mph 20 56.7 18.5 mph 16.9 mph 15.2 mph 13.5 mph 11.8 mph 10.1 mph 21 54.0 17.7 mph 16.1 mph 14.5 mph 12.8 mph 11.2 mph 9.6 mph 22 51.5 16.8 mph 15.3 mph 13.8 mph 12.3 mph 10.7 mph 9.2 mph 23 49.3 16.1 mph 14.7 mph 13.2 mph 11.7 mph 10.3 mph 8.8 mph 24 47.2 15.4 mph 14.0 mph 12.6 mph 11.2 mph 9.8 mph 8.4 mph 25 45.4 14.8 mph 13.5 mph 12.1 mph 10.8 mph 9.4 mph 8.1 mph 39 Tooth Chainring:
Rear
CogGear
InchesCadence
110 rpmCadence
100 rpmCadence
90 rpmCadence
80 rpmCadence
70 rpmCadence
60 rpm12 87.8 28.7 mph 26.1 mph 23.5 mph 20.9 mph 18.3 mph 15.7 mph 13 81.0 26.5 mph 24.1 mph 21.7 mph 19.3 mph 16.9 mph 14.5 mph 14 75.2 24.6 mph 22.4 mph 20.1 mph 17.9 mph 15.7 mph 13.4 mph 15 70.2 23.0 mph 20.9 mph 18.8 mph 16.7 mph 14.6 mph 12.5 mph 16 65.8 21.5 mph 19.6 mph 17.6 mph 15.7 mph 13.7 mph 11.7 mph 17 61.9 20.2 mph 18.4 mph 16.6 mph 14.7 mph 12.9 mph 11.0 mph 18 58.5 19.1 mph 17.4 mph 15.7 mph 13.9 mph 12.2 mph 10.4 mph 19 55.4 18.1 mph 16.5 mph 14.8 mph 13.2 mph 11.5 mph 9.9 mph 20 52.6 17.2 mph 15.6 mph 14.1 mph 12.5 mph 10.9 mph 9.4 mph 21 50.1 16.4 mph 14.9 mph 13.4 mph 11.9 mph 10.4 mph 8.9 mph 22 47.9 15.7 mph 14.2 mph 12.8 mph 11.4 mph 10.0 mph 8.5 mph 23 45.8 15.0 mph 13.6 mph 12.3 mph 10.9 mph 9.5 mph 8.2 mph 24 43.9 14.4 mph 13.1 mph 11.7 mph 10.4 mph 9.1 mph 7.8 mph 25 42.1 13.8 mph 12.5 mph 11.3 mph 10.0 mph 8.8 mph 7.5 mph 36 Tooth Chainring:
Rear
CogGear
InchesCadence
110 rpmCadence
100 rpmCadence
90 rpmCadence
80 rpmCadence
70 rpmCadence
60 rpm12 81.0 26.5 mph 24.1 mph 21.7 mph 19.3 mph 16.9 mph 14.5 mph 13 74.8 24.5 mph 22.2 mph 20.0 mph 17.8 mph 15.6 mph 13.3 mph 14 69.4 22.7 mph 20.6 mph 18.6 mph 16.5 mph 14.4 mph 12.4 mph 15 64.8 21.2 mph 19.3 mph 17.3 mph 15.4 mph 13.5 mph 11.6 mph 16 60.8 19.9 mph 18.1 mph 16.3 mph 14.5 mph 12.7 mph 10.8 mph 17 57.2 18.7 mph 17.0 mph 15.3 mph 13.6 mph 11.9 mph 10.2 mph 18 54.0 17.7 mph 16.1 mph 14.5 mph 12.8 mph 11.2 mph 9.6 mph 19 51.2 16.7 mph 15.2 mph 13.7 mph 12.2 mph 10.7 mph 9.1 mph 20 48.6 15.9 mph 14.5 mph 13.0 mph 11.6 mph 10.1 mph 8.7 mph 21 46.3 15.1 mph 13.8 mph 12.4 mph 11.0 mph 9.6 mph 8.3 mph 22 44.2 14.5 mph 13.1 mph 11.8 mph 10.5 mph 9.2 mph 7.9 mph 23 42.3 13.8 mph 12.6 mph 11.3 mph 10.1 mph 8.8 mph 7.5 mph 24 40.5 13.2 mph 12.0 mph 10.8 mph 9.6 mph 8.4 mph 7.2 mph 25 38.9 12.7 mph 11.6 mph 10.4 mph 9.3 mph 8.1 mph 6.9 mph