One of the best modern traditions in San Francisco is the Bring Your Own Big Wheel event held every Easter Sunday afternoon. Having photographed BYOBW 2007, BYOBW 2008 and BYOBW 2010 you’d think there would be nothing new to see, but in fact each year it keeps getting better. Last year the die hards endured cold San Francisco rain, but this year the sun came out making for a great day of tricycle carnage and wh