I enjoy refurbishing vintage mountain bikes into practical commuters and picked up this hobby which had laid dormant for a few years again recently.  I completely tore down this gorgeous blacked chrome Schwinn Sierra ca. 1986, re-packed all the hubs, bottom bracket, cleaned every part and did a full rebuild.  Opted for a rear coaster brake and the original Deore front caliper.  Mustache bars, modern front and rear light, WTB saddle, Suomi studded tires, and a Wald front basket round out the build.