Can someone explain these spills?

[nwills]

Just curious to get the opinions of some of the expert riders on this forum....

I was watching some videos on Youtube and came across this one particular channel that shows a bunch of guys wipe out on Mulholland in Los Angeles....weird concept for a Youtube channel but whatever...!

I've watched these videos closely because as a novice rider I'm curious on what caused some of the wipe outs in these videos and thought some of it may be good footage to learn from ?

There's a bunch so I'll point out only a few and maybe some of you guys can chime in on what your interpretation of how this happened is...

First one:
YouTube - Kana? u?ytkownika rnickeymouse
I had a hard time identifying the cause of this one?

Second one:
YouTube - Kana? u?ytkownika rnickeymouse
Same with this one..kinda hard to determine the cause...too much lean?

Third One:
YouTube - Kana? u?ytkownika rnickeymouse
Is this simple loss of grip?

Last one:
YouTube - Kana? u?ytkownika rnickeymouse
Right in front of a cop....wow...seriously!

[Mack]

I've watched those before and there were a lot of them posted. Odd part is that the videographers are always at the places they dump their bikes. I wouldn't at all be surprised if the people doing the taping are responsible somehow for something on the roadway, maybe glass beads. Those turns are pretty close to some neighborhoods and access streets where they could beat a hasty retreat. Some aren't even going that fast and wipe out close to the exit apex.

Mack

[2000750]

To me...the first an third were caused by throttle.

That white CBR1000RR looks awesome! Or did. :-(

The second video there is too much noise from the background to hear what is going on there.

The third one with the guy on the GSXR has body pisition that forces the bike much lower than it needs to be. He arms should be bent at the elbow and his body off to the inside of the bike. With the bike forced lower than necessary (You can hear pegs scraping going into the turn) on application of the throttle (you can see him open the throttle in slow mo) the bike spins the rear and then he closes it from there.

The fourth has got to be input on the bars or a grab of the brakes. (watch the slow mo portion and you can see the bike start to stand up when he grabs the brakes.)

At least that's my take on them.

[chipset]

I agree on the 4th one. He rounds the corner, sees the cop and panics. Hits the brakes and the front washes out. He panicked because he knew he was getting a ticket. He's lucky it was a cop parked on the side of the road and not driving it.

On the first one, if you watch it in slow motion, you can see a surface change. There's a black patch in the road. It also looks like it may upset the suspension, as when he comes off that patch, the rear tire is starting to slide. I hear the engine rev, but I am not sure if it is due to the tire losing traction and the RPMs spinning up because the rear tire is unloaded or if he hit the patch and it caused him (on purpose, or through body movements due to the patch) to accelerate. Based upon the sound, it sounds more like losing grip and it spinning out.

Based upon the second video, you can see that's where the third one loses traction, too. Which leads me to believe there a surface irregularity there.

And the fourth one, you hear hard parts. Then the bike comes up. Pretty simple case there.

[Sal_R1]

On the first one the rider locks up the rear tire and causes the skid.

[miles]

Having ridden that road, I can tell you why the cameramen always set up the same spots. One is a decreasing radius turn that goes off-camber just as it tightens, and the other one is constant radius, but has a bad camber change just at the exit as you get on the gas.


If you search uTube, you can find a lot of videos of cars losing it in exactly the same spots.

[WISKEY TANGO FOXTROT OVER]

Just by looking at the vidos , I would say the first 3 were caused by the black Alpinestar jacket (anyone else notice that ?)

I would say they were all over ther limits for riding trying to get the "cool guy shot" and lost it due to poor throttle control and not enough lean for the corner. I think it was the second guy that just dove off the bike without trying to recover it at all. The last vid with the cop was a clasic case of panic, saw the cop, forgot he was in the middle of a turn ad had to scrub some speed asap ,grabbed a lever and hit the ground.

[WISKEY TANGO FOXTROT OVER]

Originally Posted by Sal_R1

On the first one the rider locks up the rear tire and causes the skid.

check the slo mo the tire never locked, it was excelerating the whole time. the first guy on the blue gsxr had his ass off to the left of the bike and knee damn near on the ground, good counter weight, and smooth on the throttl through the corner.

black alpinestar jacket guy, ass in the middle of the seat like he was cruzing main st , decell till mid corner, no body lean to speak of, jumped on the gas and lost it.you can also see in the slo mo that his foot was no where near the rear brake to lock it up.

[S1000RR ROB]

cold tyres, **** tyres, to slow, bad suspension, why do we crash????????????????????????????????????????????? ??

if only we really knew ehh WOW...........

[AMRRA12]

99.8% of all crashes are rider error, a bike in it's natural state is flawless, and that state is sitting on it's kick stand

but the truth is most new rider crashes come for lack of trust in themeless of in the bike, you will see them go into a turn too hot for there riding ability and ether sit the bike up and run wide or chop the gas and lowside.

I followed a friend of mine who is a very good street rider into a blind corner that he had hit 1000 times (it was my first time going into to it) I ran up on Dave fast! (that should have been my 1st clue) all of a sudden this turned into the tightest decreasing radius turn I have ever seen! and I was caring 20mph more then I needed and no time to get ride of it. SO I turned in hard! looked for the exit and thought to my self I'm lowsiding when my vortex peg hit the ground from a mimi slide and I still had not lowsides I was like holy **** I wish someone would have been behind me to see this!

so my point is... when in doubt TURN!!!!!