A friend of mine swears by this, which he uses to transport his two boys, in comfort; the gearing is supreme: http://nihola.info/en/nihola+bikes/cigar+rehab/ Expensive but worth every penny.
Work chelsea cream in and leave overnight before buffing; or the old warm wax method.
What crank length are you using on that 47:18?
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A friend of mine swears by this, which he uses to transport his two boys, in comfort; the gearing is supreme: http://nihola.info/en/nihola+bikes/cigar+rehab/
Expensive but worth every penny.