I have found an unbelievable source for parts and he has several 26" rims with sturmey archer hubs. I would like to make my bike a 3 speed, and I could get these pretty cheap, but there is no shifter chain/cable with any of them. Since I don't know anything about SA hubs, I was hoping you guys could give me some advice. Are the shifter parts for these hubs easy to come by? If so, how easy are they to work on? I could probably pick up a few of these for about $3 to $5 each but if they aren't servicable, it isn't worth my time. Thanks for your help.