There is a Johnny Cecotto thread elsewhere, mostly about his car racing years, but I wanted to ask the bike racing guys about his 500cc Grand Prix career. He had most success in 350cc and 750cc racing, of course, as well as a couple of 250cc wins. But how good was he on a 500, and why is it that he was never quite a title contender in that class? He only had one points finish in 1975/76, but that was a second place at the beginning of only his second GP season. However, I don’t think he went into the 500s full time until 1977. His best couple of 500 seasons followed, with three race wins, and it looks like he could have challenged Barry Sheene in ’77 if he had managed a full season. I think he had the same works Yamaha support as Kenny Roberts in 1978, but was not that close to Roberts and Sheene in the points. Then in 1979/80 he doesn’t seem to have been a real contender. What is the story here?

Here we go: I have compiled the motorcycle stats on Cecotto, top six results in world championship racing, 1975-80. All machinery: Yamaha. I don’t have all the figures for pole positions and fastest laps:

Edits: Cecotto was only entered by Yamaha Motor Co. for 500 GPs in 1977-79. He was back with Venemotos in 1980. The season he missed several races was 1977, because of a multiple rider accident in the Austrian 350cc race (when Hans Stadelmann was killed).
PS: The Yamaha picture above has been doctored, as he only raced number 4 in 1979.
(most of the above taken from a couple of my other posts elsewhere, but still worth getting your opinions.)