I know a couple of people who’ve owned Yamaha RD350s, and both remember the 1970s air-cooled twin with great fondness. I bet they haven’t seen an RD350 like this one, though. Called “S2RD”, it was built by Tony Prust of Illinois-based Analog Motorcycles. (If the name sounds familiar, it’s because Prust also built the lovely CB550 sidecar combination we featured six months ago.) This bike started as a 1973 RD350 that was halfway towards a café racer conversion when the current owner bought it. After the bike sat around for years untouched, the owner commissioned Analog Motorcycles to finish the