Question

求自行车辐条长度计算公式，谢谢

Answer 1

轮径	R(车圈内圆半径)	r(花鼓孔叶片半径)PCD	D(花鼓耳距)FTF	N(交叉)	H(孔数)	L1(长度)
12	93	23	31	2	20	81.7
	93	26	28	2	20	78.7
	93	22.5	26	2	16	82.9
	93	17	32.5	2	20	86.2
14	119	17	34	2	20	111.1
	119	23	28.5	2	20	105.2
	119	22.5	26	2	20	104.9
	119	17	32.5	2	20	110.6
16	145	17	32.5	4	28	138.9
	145	22.5	28	4	28	135.1
	145	17	32.5	2	28	133.9
	145	17	32.5	4	28	138.9
18	171	17	35.5	4	28	164.8
	169	22.5	31	6	36	161.9
	169	17	32.5	4	28	162.2
	169	17	32.5	4	28	162.2
20	190	19	24	0	28	172.7
	190	22.5	28.5	4	28	179.1
	194.5	22.5	21	6	36	185.5
	194.5	22.5	33	6	36	187.2
22	218.5	19	35.5	4	28	210.2
	218.5	19	35.5	4	36	207.4
	218.5	19	35.5	6	28	218.0
	218.5	19	35.5	6	36	212.6
24	245.5	19	35.5	6	36	239.2
	245.5	22.5	22	6	36	236.1
	245.5	22.5	35	6	36	237.7
	245.5	22.5	35.5	6	36	237.7
26	270	33.5	26.5	6	36	257.3
	269.85	29	35	6	32	263.5
	265.05	29	35	6	32	258.7
700C	298.65	19	35.5	4	28	289.4
	298.65	22.5	22	4	28	286.0
	298.65	22.5	35	4	28	287.3
	301.5		35.5	6	36	303.6
	259	17	35.5	6	36	253.4
	259	22.5	27.5	6	36	250.0
	261.35	22.1	36.32	0	30	242.0
	261.35	16.92	36.32	0	30	247.1
	270.85	22.1	36.32	0	30	251.4
	275	31.5	29	6	32	266.1
	275	31.5	36	6	32	267.0