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Whats that bike under the blue blanket Spook?

Nice vid Hotcam Broadford has changed a bit since I raced there last in the late 80s early 90s. I still remember my first C grade race there with Hartwell – absolutely manic! I think half the field crashed and the rest blew their bikes up! I remember drafting this old RS125 going up the back strait ...

Thanks for that...

I am assuming that the increased contact surface area of the valve face would more effectively (particularly the exhaust valve) dissipate heat to the cylinder head material? Do valves tend to be more robust with multiple angle cuts?

Hi All Can anyone out there advise me on the effects of 3 angle valve cuts - performance/efficiency gains if any and does it effect the longevity of the valve to face seal compared to a conventional single cut? Just wondering if it would be a worthwhile procedure next time I have the head off my FZR...