I came across this forum site while googling for info on the Raleigh Twenty (my neighbor threw out a 1971 R20 folder, I picked it up and now I'm hooked). I've biked regularly for years, but am just getting into the whole biking culture, which is massive in the Bay Area. In addition to the R20, I ride an Otis Guy road bike. Looking to convert one or both of the bikes to fixed gear. Now thanks to this site, I feel all the resources needed for my new addiction are mine.