The SS/Fixed riders in my area tend to be anti-authority types. I thought this sub Forum might appreciate the story. Perhaps I was wrong. The bike in question has now been converted to single speed. I just had to exchange the screw-on 6 speed freewheel with a SS BMX freewheel, remove one chainring, shorten the chain, remove the derailleurs and shifters, and adjust the rear axle in the horizontal dropouts.