Bike porn

No am not joking whatsoever. Olympic kerin medal from memory was won on a round tube steel bike with traditional wheels...no wait a minute it was Chris Hoy on a full carbon frame with carbon wheels, etc, etc

Keirin in the Olympics is not Keirin in Japan though is it. Google it and you should find a fair bit of info (restrictions, bikes being made to same criteria etc,. to make fair as possible as lots of money passes hands on these races - like horse racing in UK)