building a commuter (recs needed)
I am building for a friend a commuter bike out of an old chromo Rockhopper frame. This is mostly using spare parts out of my basement, but I need drivetrain recommendations. So far here is what I have:
-Rockhopper Frame and 1 in threaded rigid fork (both to be powdercoated)
-Old 7 speed 26in wheels (Araya rims and Alivio hubs)
-New GEAX 26x1.6 Street Runner tires
-Old Acera RD
-New 7 sp Altus Cassette
-New Sram 7sp grip shifter
-New cheap Kalloy mtb riser.
-Old v-brakes of various makes.
-Old and very heavy bb and crank arms.
My question is what is the best way to run a single ring in the front? 7 speeds will be enough and I'd rather not throw on a triple and fd which will never be used. I am worried that the chain will keep bouncing off. Any help would be appreciated. Any other recommendations that make for a good solid commuter for use in the city of Chicago would be great too. Lights and locks she will get herself. Thanks