hencam Posted February 1, 2015 Report Share Posted February 1, 2015 Hi all, i am hoping to return to riding a C15 or 2! one in modified WD frame and one in a Drayton if i can raise the pennies! anyway i am currently building the motors at present, my question is what size chain do people use. 428 or 520, i always used 520 when riding 10 to 15 years ago. one bike will have cub hubs, the other probably Bultaco. Both engines are C15G they will be running B40 WD gearboxes. i have no sprockets or chain bought yet, so it makes no difference £££ wise. just wondered what everyone uses and why if they have a preference. all suggestions gratefully received. Quote Link to comment Share on other sites More sharing options...
vanman Posted February 7, 2015 Report Share Posted February 7, 2015 Hi last one I built I used 520 but I wish I stuck to the smaller chain as you don't need to remove any casing material when you reduce front sprocket size its also much lighter and plenty strong enough to cope with the c15s power. 1 Quote Link to comment Share on other sites More sharing options...
gii Posted February 14, 2015 Report Share Posted February 14, 2015 428 chain gives you more room everywhere and saves a surprising amount of weight Renthal R1 428 is an excellent quality chain that I seem to remember John Shirt recommending for Gasgas a while ago Quote Link to comment Share on other sites More sharing options...
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