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Re: Chain length
Posted by 'SimonS' on 16 Aug 2014 @ 17:10


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SimonS
Joined: December 2004
Total Posts: 4
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For SLK,
Just to be really depressing!

The ideal distance between the centres of the front and rear sprocket should be between 30 and 50 links

With a 10 tooth front sprocket (I race Blue) and

a 30 or 31 link centre then the chain should be n links long.

eg: for a 70 tooth rear sprocket and a 30 link centre the chain should be 103 links long

at a 31 link centre the chain should be 105 links long.

Obviously you adjust the chain centres between 30 and 31 (a distance of 7.774 mm) to use 104 links


teeth length of chain at
rear 30 link 31 link
sprocket centres
70 103.0692053 104.9686491
71 103.6732491 105.5692204
72 104.2790772 106.1715121
73 104.886693 106.7755272
74 105.4961 107.3812688
75 106.1073018 107.9887403
76 106.7203022 108.5979449
77 107.3351049 109.208886
78 107.9517138 109.821567
79 108.5701328 110.4359915
80 109.190366 111.052163
81 109.8124174 111.6700853
82 110.4362912 112.289762
83 111.0619917 112.9111971
84 111.6895234 113.5343944
85 112.3188907 114.1593578
86 112.9500981 114.7860915
87 113.5831503 115.4145996
89 114.8548083 116.676956
91 116.1339039 117.946462
93 117.4204782 119.2231539
95 118.7145739 120.5070696
97 120.0162353 121.7982485
99 121.325509 123.0967315
101 122.6424432 124.4025614

For Matt. This is a simple(?) application of trigonometry, IT (google) and Excel...there's a use for that school work.

Message Thread:

Chain length  by 'Matt97'   (15 Aug 2014 @ 16:56)
Re: Chain length  by 'Danlee'   (15 Aug 2014 @ 17:06)
Re: Chain length  by 'Matt97'   (15 Aug 2014 @ 17:25)
Re: Chain length  by 'BanzaiBoy'   (15 Aug 2014 @ 17:58)
Re: Chain length  by 'SimonS'   (15 Aug 2014 @ 21:08)
Re: Chain length  by 'SLK'   (15 Aug 2014 @ 21:36)
Re: Chain length  by 'Liam'   (15 Aug 2014 @ 21:38)
Re: Chain length  by 'Matt97'   (15 Aug 2014 @ 22:34)
Re: Chain length  by 'SimonS'  << You are here!

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