One question and one cool vid

[Deputyfarva252]

[ame=http://www.youtube.com/watch?v=HqYf_TP5-18&feature=related]YouTube - ‪Compilation Of Motorcycle Accidents‬‏[/ame] what would cause that head shake at 2:17 in this movie ive watched it a few times and cant really figure it out ....

and this kid is badass [ame=http://www.youtube.com/watch?v=qwsnk1pdnts&feature=related]YouTube - ‪UNBELIEVABLE! Kids Stunting on Pocket Bike!‬‏[/ame]

 

[kevin8198]

what would cause that head shake at 2:17 in this movie ive watched it a few times and cant really figure it out ....

Looks like he was going really fast and a small dip in the road caused the rear tire to jump, and at that speed one small jump could start the bike to shake like that. Freaking scary!!