Isn't that where they normally happen?
Load the bike with too much weight up high and towards the rear, ignore all the signs that somethings not right and just keep riding till things go all to heck. He probably had bad or missadjusted steering head bearings as well.
Pipes weren't loud enough.
The most common cause,
LOW TIRE PRESSURE!
Ouch!
He almost pulled out that 360.
Almost. 
But yeah, could be a number of contributing factors, mentioned here. Overloaded in the rear is probably the leading cause.
I read elsewhere, that the person shooting the video saw him get a little wobble earlier, and the guy ignored it and kept on going.
Bump, while not being relaxed on the bars, then fighting it.
In reply to lrrs:
His left hand wasn't even on the bars until well after it started to really weave.
Sure looked like he was grinding his face into the asphalt for a long time after his failed 360 grind attempt.
That was brutal to watch. The road rash must have been horrendous.
Good supporting evidence for a pro-gear argument. What might have been a basically injury free accident will probably involve skin grafts, months of misery, and a lifetime of heavy scarring.
dculberson wrote: That was brutal to watch. The road rash must have been horrendous. Good supporting evidence for a pro-gear argument. What might have been a basically injury free accident will probably involve skin grafts, months of misery, and a lifetime of heavy scarring.
Same thing I thought.
My kids see someone riding down the street like that and immediately point out how silly it is.
dculberson wrote: That was brutal to watch. The road rash must have been horrendous. Good supporting evidence for a pro-gear argument. What might have been a basically injury free accident will probably involve skin grafts, months of misery, and a lifetime of heavy scarring.
First thing I noticed was the pudding bowl helmet, jeans, and a wifebeater. Thank goodness he didn't look like some dork wearing a fullface helmet and hi-viz protective gear.
lrrs wrote: Bump, while not being relaxed on the bars, then fighting it.
^this
Something happened to upset the bike and he tried to fight it fixing itself. He should have left his other hand off rather than grabbing it tightly with both. Stiffening up on the bars is the worst thing you can do to a wobble. Unless it was a mechanical problem (flat, bearing, etc) - the bike is more stable without a rider.
Skinned knees and rounded off shoulders are OK-ish, but scuffing your palms along the ground; you find out who your REAL friends are when you have to pee.
biggest issues - ignoring what the bike is telling you and wifebeater as protective gear. Guy was lucky to not make a page on daily gore.
Ouch Ouch ouch. That looks really painful....
Comments said it had been wobbling on/off for awhile.
Or you could be messing around.
A video I filmed about 17 years
https://www.youtube.com/watch?v=YD6jruSIELA
ATGATT
MulletTruck wrote: Or you could be messing around. A video I filmed about 17 years https://www.youtube.com/watch?v=YD6jruSIELA
Play stupid games win stupid prizes?
He has a trophy case full of them!
NEALSMO wrote:MulletTruck wrote: Or you could be messing around. A video I filmed about 17 years https://www.youtube.com/watch?v=YD6jruSIELAhotlink Play stupid games win stupid prizes?
bentwrench wrote: The most common cause, LOW TIRE PRESSURE!
Nailed it.
I've had a rear go down at around 75 and had to deal with the rear tramlining. Also had a wicked slapper on initial throttle up while on brand spanking new tires. It's not fun.
Sorry for bumping a month old thread, I don't get around here very often anymore. 
In reply to WOW Really Paul?:
Glad to hear from you! Hope all is going well!
You heal up and get back on the bike yet?
In reply to Nick (Bo) Comstock:
Finally, I didn't ride at all last year aside from a farewell trip around the block to the green 10r. Then life hit me with a career change. Managed to get out this year every chance on the Muzzy bike. It's a bit faster than before thanks to a better tune....
Nice!
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