GCFR - The really really big guy is Gav "I ate 16 sherpas when I ascended Everest" Vickers - he makes me feel tiny, and is a superb wheel to sit on especially in a crit. Not sure what he weighs but is at least 4 inches taller than my 6'1" and he is solid. I think Gav is racing HDCC B grade but usually races A grade.
I was the next largest - I weigh about 109 kg. Race B grade everywhere but HDCC, where I am in C grade. When the HDCC handicapper starts counting crit results I might get out of C grade (can't wait - the sprints are deadly with numpties everywhere), as I very rarely race HDCC on Friday nights (which do count to grading) due to work committments in Wyong, so I usually race @ North Wyong.