Here is my rb2 converted to a single speed.

$ 80.00 --- 1988 RB2 from back of LBS
$ 45.00 --- B17 brooks from craigslist
$ 14.00 --- 16t freewheel
$ 7.00 --- bmx chain
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$146.00 --- 50 miles per week of happiness.

-- Andy

andy.wergedal@gmail.com