---------------------------------------------------------------------------
SP Shifting Pattern
CRxFW ChainRing x FreeWheel
GI Gear Inches
GIdf Percentage of increase between present GI value and the
next sequential GI value.
DI Distance traveled in INCHES in a single pedal rotation
diff Difference in INCHES between the present DI value and
the next sequential DI value.
DF Distance traveled in FEET in a single pedal rotation
displayed as FEET' INCHES.decimal_remainder"
PRPM Pedal Rotations Per Mile
RT Gear Ratios
---------------------------------------------------------------------------
Notes:
Highlighted stoplight gear is the gear I start out on at a stop light (currently)
Highlighted spin-up gear is the gear I shift to riding away from the stoplight (standing)
Highlighted flats gears are (for the current setup) the gear I shift to from the stop
light gear and the lowest gear I tend to use on the flats.
Highlighted unused gears are, well, unused ;-)
Wheel Diameter is probably not accurate - since I didn't know mine, I just used
the default. Gear inches are probably not accurate but can be used to compare
different chainring/cassette combinations.
| current setup, 39 x 53, 12-25 |
compact FSA, 34 x 50, 12-25 |
---------------------------------------------------------------------------
Wheel Diameter: 26.70 inches
Gears: 39/53 12-13-14-15-16-17-19-21-23-25
---------------------------------------------------------------------------
SP CRxFW GI GIdf DI diff DF PRPM RT
---------------------------------------------------------------------------
1> 39x25 41.65 8.70% 130.85 11.38 10'10.85" 484.21 1:1.56
2> 39x23 45.27 9.52% 142.23 13.55 11'10.23" 445.47 1:1.70
3> 39x21 49.59 10.53% 155.78 16.40 12'11.78" 406.73 1:1.86
4> 39x19 54.81 3.28% 172.18 5.65 14' 4.18" 368.00 1:2.05
5> 53x25 56.60 8.21% 177.83 14.61 14' 9.83" 356.30 1:2.12
6> 39x17 61.25 0.45% 192.43 0.86 16' 0.43" 329.26 1:2.29
7> 53x23 61.53 5.78% 193.29 11.17 16' 1.29" 327.80 1:2.30
8> 39x16 65.08 3.54% 204.46 7.24 17' 0.46" 309.89 1:2.44
9> 53x21 67.39 3.02% 211.70 6.39 17' 7.70" 299.29 1:2.52
10> 39x15 69.42 7.14% 218.09 15.58 18' 2.09" 290.52 1:2.60
11> 39x14 74.38 0.13% 233.67 0.32 19' 5.67" 271.16 1:2.79
12> 53x19 74.48 7.55% 233.98 17.66 19' 5.98" 270.79 1:2.79
13> 39x13 80.10 3.92% 251.64 9.87 20'11.64" 251.79 1:3.00
14> 53x17 83.24 4.25% 261.51 11.10 21' 9.51" 242.29 1:3.12
15> 39x12 86.77 1.92% 272.61 5.24 22' 8.61" 232.42 1:3.25
16> 53x16 88.44 6.67% 277.85 18.52 23' 1.85" 228.03 1:3.31
17> 53x15 94.34 7.14% 296.38 21.17 24' 8.38" 213.78 1:3.53
18> 53x14 101.08 7.69% 317.55 24.43 26' 5.55" 199.53 1:3.79
19> 53x13 108.85 8.33% 341.97 28.50 28' 5.97" 185.28 1:4.08
20> 53x12 117.93 0.00% 370.47 0.00 30'10.47" 171.03 1:4.42
---------------------------------------------------------------------------
SP CRxFW GI GIdf DI diff DF PRPM RT
---------------------------------------------------------------------------
|
---------------------------------------------------------------------------
Wheel Diameter: 26.70 inches
Gears: 34/50 12-13-14-15-16-17-19-21-23-25
---------------------------------------------------------------------------
SP CRxFW GI GIdf DI diff DF PRPM RT
---------------------------------------------------------------------------
1> 34x25 36.31 8.70% 114.08 9.92 9' 6.08" 555.41 1:1.36
2> 34x23 39.47 9.52% 124.00 11.81 10' 4.00" 510.98 1:1.48
3> 34x21 43.23 10.53% 135.81 14.30 11' 3.81" 466.55 1:1.62
4> 34x19 47.78 11.76% 150.10 17.66 12' 6.10" 422.11 1:1.79
5> 50x25 53.40 0.00% 167.76 0.00 13'11.76" 377.68 1:2.00
6> 34x17 53.40 6.25% 167.76 10.49 13'11.76" 377.68 1:2.00
7> 34x16 56.74 2.30% 178.25 4.10 14'10.25" 355.46 1:2.12
8> 50x23 58.04 4.27% 182.35 7.78 15' 2.35" 347.47 1:2.17
9> 34x15 60.52 5.04% 190.13 9.59 15'10.13" 333.25 1:2.27
10> 50x21 63.57 2.00% 199.72 3.99 16' 7.72" 317.25 1:2.38
11> 34x14 64.84 7.69% 203.71 15.67 16'11.71" 311.03 1:2.43
12> 34x13 69.83 0.62% 219.38 1.36 18' 3.38" 288.81 1:2.62
13> 50x19 70.26 7.67% 220.74 16.92 18' 4.74" 287.04 1:2.63
14> 34x12 75.65 3.81% 237.66 9.05 19' 9.66" 266.60 1:2.83
15> 50x17 78.53 6.25% 246.71 15.42 20' 6.71" 256.82 1:2.94
16> 50x16 83.44 6.67% 262.13 17.48 21'10.13" 241.72 1:3.12
17> 50x15 89.00 7.14% 279.60 19.97 23' 3.60" 226.61 1:3.33
18> 50x14 95.36 7.69% 299.57 23.04 24'11.57" 211.50 1:3.57
19> 50x13 102.69 8.33% 322.62 26.88 26'10.62" 196.39 1:3.85
20> 50x12 111.25 0.00% 349.50 0.00 29' 1.50" 181.29 1:4.17
---------------------------------------------------------------------------
SP CRxFW GI GIdf DI diff DF PRPM RT
---------------------------------------------------------------------------
|
| TA Zephyr Lite, 34 x 48, 12-25 |
TA Zephyr Lite, 34 x 48, 11-23 ("flat" racing setup) |
---------------------------------------------------------------------------
Wheel Diameter: 26.70 inches
Gears: 34/48 12-13-14-15-16-17-19-21-23-25
---------------------------------------------------------------------------
SP CRxFW GI GIdf DI diff DF PRPM RT
---------------------------------------------------------------------------
1> 34x25 36.31 8.70% 114.08 9.92 9' 6.08" 555.41 1:1.36
2> 34x23 39.47 9.52% 124.00 11.81 10' 4.00" 510.98 1:1.48
3> 34x21 43.23 10.53% 135.81 14.30 11' 3.81" 466.55 1:1.62
4> 34x19 47.78 7.29% 150.10 10.95 12' 6.10" 422.11 1:1.79
5> 48x25 51.26 4.17% 161.05 6.71 13' 5.05" 393.42 1:1.92
6> 34x17 53.40 4.35% 167.76 7.29 13'11.76" 377.68 1:2.00
7> 48x23 55.72 1.82% 175.05 3.19 14' 7.05" 361.94 1:2.09
8> 34x16 56.74 6.67% 178.25 11.88 14'10.25" 355.46 1:2.12
9> 34x15 60.52 0.84% 190.13 1.60 15'10.13" 333.25 1:2.27
10> 48x21 61.03 6.25% 191.73 11.98 15'11.73" 330.47 1:2.29
11> 34x14 64.84 4.02% 203.71 8.20 16'11.71" 311.03 1:2.43
12> 48x19 67.45 3.53% 211.91 7.47 17' 7.91" 299.00 1:2.53
13> 34x13 69.83 7.96% 219.38 17.46 18' 3.38" 288.81 1:2.62
14> 48x17 75.39 0.35% 236.84 0.82 19' 8.84" 267.52 1:2.82
15> 34x12 75.65 5.88% 237.66 13.98 19' 9.66" 266.60 1:2.83
16> 48x16 80.10 6.67% 251.64 16.78 20'11.64" 251.79 1:3.00
17> 48x15 85.44 7.14% 268.42 19.17 22' 4.42" 236.05 1:3.20
18> 48x14 91.54 7.69% 287.59 22.12 23'11.59" 220.31 1:3.43
19> 48x13 98.58 8.33% 309.71 25.81 25' 9.71" 204.58 1:3.69
20> 48x12 106.80 0.00% 335.52 0.00 27'11.52" 188.84 1:4.00
---------------------------------------------------------------------------
SP CRxFW GI GIdf DI diff DF PRPM RT
---------------------------------------------------------------------------
|
---------------------------------------------------------------------------
Wheel Diameter: 26.70 inches
Gears: 34/48 11-12-13-14-15-16-17-19-21-23
---------------------------------------------------------------------------
SP CRxFW GI GIdf DI diff DF PRPM RT
---------------------------------------------------------------------------
1> 34x23 39.47 9.52% 124.00 11.81 10' 4.00" 510.98 1:1.48
2> 34x21 43.23 10.53% 135.81 14.30 11' 3.81" 466.55 1:1.62
3> 34x19 47.78 11.76% 150.10 17.66 12' 6.10" 422.11 1:1.79
4> 34x17 53.40 4.35% 167.76 7.29 13'11.76" 377.68 1:2.00
5> 48x23 55.72 1.82% 175.05 3.19 14' 7.05" 361.94 1:2.09
6> 34x16 56.74 6.67% 178.25 11.88 14'10.25" 355.46 1:2.12
7> 34x15 60.52 0.84% 190.13 1.60 15'10.13" 333.25 1:2.27
8> 48x21 61.03 6.25% 191.73 11.98 15'11.73" 330.47 1:2.29
9> 34x14 64.84 4.02% 203.71 8.20 16'11.71" 311.03 1:2.43
10> 48x19 67.45 3.53% 211.91 7.47 17' 7.91" 299.00 1:2.53
11> 34x13 69.83 7.96% 219.38 17.46 18' 3.38" 288.81 1:2.62
12> 48x17 75.39 0.35% 236.84 0.82 19' 8.84" 267.52 1:2.82
13> 34x12 75.65 5.88% 237.66 13.98 19' 9.66" 266.60 1:2.83
14> 48x16 80.10 3.03% 251.64 7.63 20'11.64" 251.79 1:3.00
15> 34x11 82.53 3.53% 259.27 9.15 21' 7.27" 244.38 1:3.09
16> 48x15 85.44 7.14% 268.42 19.17 22' 4.42" 236.05 1:3.20
17> 48x14 91.54 7.69% 287.59 22.12 23'11.59" 220.31 1:3.43
18> 48x13 98.58 8.33% 309.71 25.81 25' 9.71" 204.58 1:3.69
19> 48x12 106.80 9.09% 335.52 30.50 27'11.52" 188.84 1:4.00
20> 48x11 116.51 0.00% 366.02 0.00 30' 6.02" 173.10 1:4.36
---------------------------------------------------------------------------
SP CRxFW GI GIdf DI diff DF PRPM RT
---------------------------------------------------------------------------
|
| TA Zephyr Lite, 34 x 48, 13-26 |
flydhest setup, 39 x 53, 13-29 |
---------------------------------------------------------------------------
Wheel Diameter: 26.70 inches
Gears: 34/48 13-14-15-16-17-18-20-22-24-26
---------------------------------------------------------------------------
SP CRxFW GI GIdf DI diff DF PRPM RT
---------------------------------------------------------------------------
1> 34x26 34.92 8.33% 109.69 9.14 9' 1.69" 577.63 1:1.31
2> 34x24 37.83 9.09% 118.83 10.80 9'10.83" 533.20 1:1.42
3> 34x22 41.26 10.00% 129.63 12.96 10' 9.63" 488.76 1:1.55
4> 34x20 45.39 8.60% 142.60 12.26 11'10.60" 444.33 1:1.70
5> 48x26 49.29 2.31% 154.86 3.58 12'10.86" 409.15 1:1.85
6> 34x18 50.43 5.88% 158.44 9.32 13' 2.44" 399.90 1:1.89
7> 48x24 53.40 0.00% 167.76 0.00 13'11.76" 377.68 1:2.00
8> 34x17 53.40 6.25% 167.76 10.49 13'11.76" 377.68 1:2.00
9> 34x16 56.74 2.67% 178.25 4.77 14'10.25" 355.46 1:2.12
10> 48x22 58.25 3.89% 183.01 7.12 15' 3.01" 346.21 1:2.18
11> 34x15 60.52 5.88% 190.13 11.18 15'10.13" 333.25 1:2.27
12> 48x20 64.08 1.19% 201.31 2.40 16' 9.31" 314.73 1:2.40
13> 34x14 64.84 7.69% 203.71 15.67 16'11.71" 311.03 1:2.43
14> 34x13 69.83 1.96% 219.38 4.30 18' 3.38" 288.81 1:2.62
15> 48x18 71.20 5.88% 223.68 13.16 18' 7.68" 283.26 1:2.67
16> 48x17 75.39 6.25% 236.84 14.80 19' 8.84" 267.52 1:2.82
17> 48x16 80.10 6.67% 251.64 16.78 20'11.64" 251.79 1:3.00
18> 48x15 85.44 7.14% 268.42 19.17 22' 4.42" 236.05 1:3.20
19> 48x14 91.54 7.69% 287.59 22.12 23'11.59" 220.31 1:3.43
20> 48x13 98.58 0.00% 309.71 0.00 25' 9.71" 204.58 1:3.69
---------------------------------------------------------------------------
SP CRxFW GI GIdf DI diff DF PRPM RT
---------------------------------------------------------------------------
|
---------------------------------------------------------------------------
Wheel Diameter: 26.70 inches
Gears: 39/53 13-14-15-17-19-21-23-25-27-29
---------------------------------------------------------------------------
SP CRxFW GI GIdf DI diff DF PRPM RT
---------------------------------------------------------------------------
1> 39x29 35.91 7.41% 112.80 8.36 9' 4.80" 561.68 1:1.34
2> 39x27 38.57 8.00% 121.16 9.69 10' 1.16" 522.94 1:1.44
3> 39x25 41.65 8.70% 130.85 11.38 10'10.85" 484.21 1:1.56
4> 39x23 45.27 7.78% 142.23 11.07 11'10.23" 445.47 1:1.70
5> 53x29 48.80 1.62% 153.30 2.48 12' 9.30" 413.31 1:1.83
6> 39x21 49.59 5.70% 155.78 8.88 12'11.78" 406.73 1:1.86
7> 53x27 52.41 4.57% 164.65 7.52 13' 8.65" 384.81 1:1.96
8> 39x19 54.81 3.28% 172.18 5.65 14' 4.18" 368.00 1:2.05
9> 53x25 56.60 8.21% 177.83 14.61 14' 9.83" 356.30 1:2.12
10> 39x17 61.25 0.45% 192.43 0.86 16' 0.43" 329.26 1:2.29
11> 53x23 61.53 9.52% 193.29 18.41 16' 1.29" 327.80 1:2.30
12> 53x21 67.39 3.02% 211.70 6.39 17' 7.70" 299.29 1:2.52
13> 39x15 69.42 7.14% 218.09 15.58 18' 2.09" 290.52 1:2.60
14> 39x14 74.38 0.13% 233.67 0.32 19' 5.67" 271.16 1:2.79
15> 53x19 74.48 7.55% 233.98 17.66 19' 5.98" 270.79 1:2.79
16> 39x13 80.10 3.92% 251.64 9.87 20'11.64" 251.79 1:3.00
17> 53x17 83.24 13.33% 261.51 34.87 21' 9.51" 242.29 1:3.12
18> 53x15 94.34 7.14% 296.38 21.17 24' 8.38" 213.78 1:3.53
19> 53x14 101.08 7.69% 317.55 24.43 26' 5.55" 199.53 1:3.79
20> 53x13 108.85 0.00% 341.97 0.00 28' 5.97" 185.28 1:4.08
---------------------------------------------------------------------------
SP CRxFW GI GIdf DI diff DF PRPM RT
---------------------------------------------------------------------------
|
---------------------------------------------------------------------------
Wheel Diameter: 26.70 inches
Gears: 34/50 13-14-15-16-17-18-20-22-24-26
---------------------------------------------------------------------------
SP CRxFW GI GIdf DI diff DF PRPM RT
---------------------------------------------------------------------------
1> 34x26 34.92 8.33% 109.69 9.14 9' 1.69" 577.63 1:1.31
2> 34x24 37.83 9.09% 118.83 10.80 9'10.83" 533.20 1:1.42
3> 34x22 41.26 10.00% 129.63 12.96 10' 9.63" 488.76 1:1.55
4> 34x20 45.39 11.11% 142.60 15.84 11'10.60" 444.33 1:1.70
5> 34x18 50.43 1.81% 158.44 2.87 13' 2.44" 399.90 1:1.89
6> 50x26 51.35 4.00% 161.31 6.45 13' 5.31" 392.79 1:1.92
7> 34x17 53.40 4.17% 167.76 6.99 13'11.76" 377.68 1:2.00
8> 50x24 55.62 2.00% 174.75 3.50 14' 6.75" 362.57 1:2.08
9> 34x16 56.74 6.67% 178.25 11.88 14'10.25" 355.46 1:2.12
10> 34x15 60.52 0.27% 190.13 0.51 15'10.13" 333.25 1:2.27
11> 50x22 60.68 6.86% 190.64 13.07 15'10.64" 332.36 1:2.27
12> 34x14 64.84 2.94% 203.71 5.99 16'11.71" 311.03 1:2.43
13> 50x20 66.75 4.62% 209.70 9.68 17' 5.70" 302.14 1:2.50
14> 34x13 69.83 6.21% 219.38 13.62 18' 3.38" 288.81 1:2.62
15> 50x18 74.17 5.88% 233.00 13.71 19' 5.00" 271.93 1:2.78
16> 50x17 78.53 6.25% 246.71 15.42 20' 6.71" 256.82 1:2.94
17> 50x16 83.44 6.67% 262.13 17.48 21'10.13" 241.72 1:3.12
18> 50x15 89.00 7.14% 279.60 19.97 23' 3.60" 226.61 1:3.33
19> 50x14 95.36 7.69% 299.57 23.04 24'11.57" 211.50 1:3.57
20> 50x13 102.69 0.00% 322.62 0.00 26'10.62" 196.39 1:3.85
---------------------------------------------------------------------------
SP CRxFW GI GIdf DI diff DF PRPM RT
---------------------------------------------------------------------------
|
|
gear calculator used