Ironwood Custom Motorcycles' slogan is “Turning scrappy metal into gold.” And we saw the proof just last week—with a sharp-edged BMW cafe racer that almost fried our servers. But while we were ogling the Beemer, Arjan van den Boom and his Amsterdam-based crew were already gearing up to unveil their next project. This time they started with a brand new donor—a mint fresh Yamaha XSR700. The XSR700 landed in their laps via Dutch watchmaker TW Steel, as part of the Sons of Time project. Working...