davet Posted July 16, 2015 Report Share Posted July 16, 2015 Hi there I'm after some info regarding bsa c15 . I am going to fit 14 tooth front & 64 tooth rear sprocket , will a 134 link chain be long enough . There was no chain when I bought bike to restore , so knowledge lacking . Thanks in advance Dave Quote Link to comment Share on other sites More sharing options...
old trials fanatic Posted July 16, 2015 Report Share Posted July 16, 2015 520 or 428 chain ? Quote Link to comment Share on other sites More sharing options...
davet Posted July 16, 2015 Author Report Share Posted July 16, 2015 428 cheers Quote Link to comment Share on other sites More sharing options...
suzuki250 Posted July 17, 2015 Report Share Posted July 17, 2015 (edited) Measure the distance between centres then add a bit of simple maths (or use a program off the net) and that will give you the correct length 428 chain has a ½” pitch try this: http://www.rbracing-rsr.com/chainlength.html Edited July 17, 2015 by suzuki250 1 Quote Link to comment Share on other sites More sharing options...
davet Posted July 17, 2015 Author Report Share Posted July 17, 2015 Simples cheers Suzuki 250 Quote Link to comment Share on other sites More sharing options...
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