Hello from England! Please could someone help me out with a question about the chain on the CY50 I am building at the moment?
I am fitting a Honda CG125 engine to my bike but the gearbox output shaft is 20mm which is larger than I am accustomed to with the Monkey at 17mm. Do you have any suggestions what I should do for a chain and sprockets please? Can I get a 420 sprocket for my engine? I have been told my engine has a 428 sprocket so should I get a 428 sprocket for my rear hub? Can I buy one or do I have to make one?