You got the ol' memory box working too, Spaw - thanks. I well remember the smell of 'dope' which was either the fuel or something mixed with it to make the bikes go like a rocket. Got to thinking about the bikes, which in my day were 500cc single cylinder JAP engined machine (JAP being the make - not nationality!) and guess what - By today's rules they are still 500cc, single cylinder, single carb, single spark pug jobs! Nice to see it is still about the riders skill, not the machine. Mind you - from what I remember most of that skill involved not falling off :-)

I even looked up this you tube clip and it took me back 40-odd years! Must try and get to a live meeting again some day.

Cheers

DtG