Looking around at some web sites this morning and I came across the site for Sturmey Archer. Man did that bring back memories to my childhood. One thing I do remember is that the three speed hub was like a tank. Never in all the years growing up did I have a problem. I'll never forget my old three speed Raleigh that I had for years. I must have road that thing everywhere, and like I mentioned, never a problem. Are any of you guys using a three speed Sturmey Archer hub on your folding bike? I'm sure it would be somewhat expensive to swap out.