An interesting head shake on the 11!

Whilst out riding with a chap on a ZH2, I was accelerating from around 200kph to 250 when I hit a series of ripples and holes in the road. The handle bars gave quite a shake which made for an interesting few seconds. A combination of speed, steering head angle and road surface were the reasons. I loosened the grip on the handlebars and made sure I did not brake and the bike sorted itself out. :-) This