Shocked beyond belief.
Since he was a fellow motorcyclist, my first thought was accident, especially given his comparative young age. That doesn't appear to be the issue, but in no way less tragic. Over the years, Dave and I talked at great length regarding our respective military careers, joked about the vagaries of British versus Japanese versus European motorcycle ownership, and specifically, the one area we both loved - naval-oriented flight sim. His knowledge of naval vessels was legendary, and he helped me in the early days of my figuring out FSX AI ship formations.
He was generous and kind, and recently began to take on some great repaint projects. My deepest condolences to his wife Alison and daughter - a terrible loss, but my memories of his friendship will remain.
dl