21速,24速齿比,档位,踏频/时速对照表(附python源码)

原始岛1930 · 发表于 2012-5-7 17:39

21速
齿比, 档位, 踏频/时速
0.824, 1-1(28-34), 80-90-100rpm= 8.202- 9.228-10.253km/h
1.167, 1-2(28-24), 80-90-100rpm=11.620-13.072-14.525km/h
1.273, 1-3(28-22), 80-90-100rpm=12.676-14.261-15.845km/h
1.400, 1-4(28-20), 80-90-100rpm=13.944-15.687-17.430km/h
1.727, 2-3(38-22), 80-90-100rpm=17.204-19.354-21.505km/h
1.900, 2-4(38-20), 80-90-100rpm=18.924-21.290-23.655km/h
2.111, 2-5(38-18), 80-90-100rpm=21.027-23.655-26.283km/h
2.375, 2-6(38-16), 80-90-100rpm=23.655-26.612-29.569km/h
2.667, 3-5(48-18), 80-90-100rpm=26.560-29.880-33.200km/h
3.000, 3-6(48-16), 80-90-100rpm=29.880-33.615-37.350km/h
3.429, 3-7(48-14), 80-90-100rpm=34.149-38.417-42.686km/h

24速
齿比, 档位, 踏频/时速
0.688, 1-1(22-32), 80-90-100rpm= 6.894- 7.755- 8.617km/h
0.786, 1-2(22-28), 80-90-100rpm= 7.879- 8.863- 9.848km/h
0.917, 1-3(22-24), 80-90-100rpm= 9.192-10.341-11.489km/h
1.048, 1-4(22-21), 80-90-100rpm=10.505-11.818-13.131km/h
1.333, 2-3(32-24), 80-90-100rpm=13.370-15.041-16.712km/h
1.524, 2-4(32-21), 80-90-100rpm=15.280-17.189-19.099km/h
1.778, 2-5(32-18), 80-90-100rpm=17.826-20.054-22.283km/h
2.133, 2-6(32-15), 80-90-100rpm=21.391-24.065-26.739km/h
2.444, 3-5(44-18), 80-90-100rpm=24.511-27.575-30.639km/h
2.933, 3-6(44-15), 80-90-100rpm=29.413-33.090-36.766km/h
3.385, 3-7(44-13), 80-90-100rpm=33.938-38.180-42.423km/h
4.000, 3-8(44-11), 80-90-100rpm=40.109-45.122-50.136km/h

# -*- coding: utf-8 -*- #
from __future__ import division
#8
#
#size = 2089
#front = {1:22, 2:32, 3:44}
#behind = {8:11, 7:13, 6:15, 5:18, 4:21, 3:24, 2:28, 1:32}
#besides = [[1,8], [1,7], [1,6], [1,5], [2,8], [2,7], [2,2], [2,1], [3,1], [3,2], [3,3], [3,4]]
#7
size = 2075
front = {1:28, 2:38, 3:48}
behind = {7:14, 6:16, 5:18, 4:20, 3:22, 2:24, 1:34}
besides = [[1,7], [1,6], [2,1], [2,7], [3,1], [3,2], [1,5], [3,3], [2,2], [3,4]]
if __name__ == '__main__':
dd = {}
for fk, fv in front.iteritems():
for bk, bv in behind.iteritems():
if [fk,bk] not in besides:
tv = 60 * (fv / bv) * size / 1000 / 1000
dd["%d-%d(%d-%d), 80-90-100rpm=%6.3f-%6.3f-%6.3fkm/h" % (fk, bk, fv, bv, 80 * tv, 90 * tv, 100 * tv)] = fv / bv
# print dd
# if [fk,bk] not in besides:
# print "%d-%d, %d-%d, %5.3f" % (fk, bk, fv, bv, fv / bv)
keys = dd.keys()
keys.sort(key = dd.__getitem__)
print "%5s, %11s, %23s" %("齿比", "档位", "踏频/时速")
for k in keys:
print "%5.3f, %s" % (dd[k], k)