Does anyone know what the acceptable or rule of thumb is, when it comes to how much slack in the chain is too much? Is there a way to measure what's too much when it comes to Delailures? Can a chain be too tight? I have adjusted my front derailure several times, sometimes it will shift down and sometimes not, but if I shift to the biggest front ring gear and then all the way down to the smallest front gear it works! For some reason I thought that the chain might be too loose, is this a possible cause? I don't know what is considered too loose because of the idler wheel, so I would like some guidence on what is acceptable slack in the chain!!!
Thanks to all who reply.