air v's water cooled

[YamFazFan]

air cooled engines need larger clearances on parts due the the greater temperature range they have to work in, anyone whos been stuck in traffic on a hot summers day know how hot air cooled engines can get?

It has always surprised me how,on a steaming hot summers day,stuck in traffic,with no air-flow,all air cooled bikes don't overheat/seize up!.