Rear wheel and final drive. This uses a five speed, 14-34 tooth freewheel (old school). I plan to upgrade to indexed shifting with a seven or eight speed freewheel at some point, mainly because axles on cassette cogs don't bend as easily as old style freewheel hubs. Those are Planet Bike polycarbonate fenders. Rear dropouts from Nova Cycles. The vertical struts are seat stays from a cheap mountain bike, mitered and brazed to the main tube.