s1000rr lowside, did his guy turn off traction control?

[BusaBob]

Sometimes, its hard to let go of $30k, and it happens so fast you don't realize what's happened.

It was all peachy until he hit the dirt, that's when it went pear shaped. Must suck to watch that much money go end over end.

my eyes teared up as i watched that....

[JohnnyP636]

How do wheel speed sensors detect lateral slide?

I dont know, how does the traction control in my truck straighten itself out when my rear steps out? I can let it get as sideways as possible, few beeps and it straightens out....

From my limited experience any slide is a loss of traction, loss of traction creates more wheel speed... If your rear wheel is spinning faster then your front your either sliding it or doing a wheelie...I was under the assumption that motorcycle traction control would do something about that, just like it does in cars...Obviously not

[JohnnyP636]

Seems like he wants to sell it now...
http://www.youtube.com/watch?v=SHWjghMVWgs

If hes lucky his frame isnt broken, I had one in the shop that was crashed pretty good. The bike didnt look that bad but after further inspection the frame had cracked right through on one side...

[reciprocity]

I dont know, how does the traction control in my truck straighten itself out when my rear steps out? I can let it get as sideways as possible, few beeps and it straightens out....

independent braking from the stability control system.

Automotive systems are very different from from Motorcycle-based TC systems, with 4 wheels, you have many more capabilities.

[caboose483]

I dont know, how does the traction control in my truck straighten itself out when my rear steps out? I can let it get as sideways as possible, few beeps and it straightens out....

You can't steer a bike with the front or rear brake, applicaiton of the brake on just the left or right in a 4-wheeled vehicle can help steer the vehicle to regain traction.

Just think about the physics behind the situation. A rider on a S1000RR chops the throttle mid corner and upsets the chassis. As a result the rear loses traction and starts to wash out. At 0% throttle what action can the computer controlled TC take that will bring it back? Application of front or rear brake will not help (I'm pretty sure the BMW TC system does not use the brakes anyhow.. the ABS and TC function separately), it can't cut the throttle because it's already at 0%, it won't add throttle because not TC system will ever add throttle.

[Wingboy]

Ya that's gotta hurt. Hey Donovan... how does it feel like to crash... ah never mind.

Bahahahahaha.Love it!

[HA3AP]

How do wheel speed sensors detect lateral slide?

From my understanding there are sensors in both the front and rear wheel that monitor the spin ratio between the two, if you are hard on gas in a corner and the rear steps out the sensors sense the difference in speed and cut the throttle, so the rear wheel matches the front spin, once that is attained the TC will enable throttle again.

[reciprocity]

From my understanding there are sensors in both the front and rear wheel that monitor the spin ratio between the two, if you are hard on gas in a corner and the rear steps out the sensors sense the difference in speed and cut the throttle, so the rear wheel matches the front spin, once that is attained the TC will enable throttle again.

this has nothing to do with lateral slide

[mmmnaked]

From my understanding there are sensors in both the front and rear wheel that monitor the spin ratio between the two, if you are hard on gas in a corner and the rear steps out the sensors sense the difference in speed and cut the throttle, so the rear wheel matches the front spin, once that is attained the TC will enable throttle again.

This makes no difference whatsoever when the rider has already closed the throttle and sent himself to the moon.

[El Zilcho]

I dont know, how does the traction control in my truck straighten itself out when my rear steps out?

I don't know about your truck, but BMW's DSC (Dynamic Stability Control) uses gyroscopic sensors to monitor the position of the car relative to the line of driving. It will use brakes to bring the car back to alignment when a skid is detected.

[nwilliams]

Personally...I don't see him chopping the throttle....the rpm's drop after the rear washes out...meaning he let off the throttle after the bike slid out.

What I do see...is him getting on the throttle at excessive lean angle and doing so before the apex with no sign of DTC activating. If he got on the throttle while leaned too much and too early in the turn the gyroscope and DTC should of kicked in before the rear wheel completely washed out.

You guys are pointing out that he let off the throttle around 0:28...isn't the bike already sliding out at that point?

[reciprocity]

Personally...I don't see him chopping the throttle....the rpm's drop after the rear washes out...meaning he let off the throttle after the bike slid out.

What I do see...is him getting on the throttle at excessive lean angle and doing so before the apex with no sign of DTC activating. If he got on the throttle while leaned too much and too early in the turn the gyroscope and DTC should of kicked in before the rear wheel completely washed out.

You guys are pointing out that he let off the throttle around 0:28...isn't the bike already sliding out at that point?

The DTC only deals with wheel spin, even at extreme lean angle if there is no spin, the DTC should not activate, wheelspin in a corner like that is often required get the bike to turn

There was no wheelspin condition in this crash, so the DTC cannot do anything to remedy.

[dricked]

I had no idea that just rolling off would do this till I sat here and thought about it. Also that strobe light/shift light....wtf?

[mmmnaked]

You can't steer a bike with the front or rear brake, applicaiton of the brake on just the left or right in a 4-wheeled vehicle can help steer the vehicle to regain traction.

Can't say I agree with this 100%... if you scrub speed off the rear tire the bike wants to pivot around a turn tighter. Same goes for gently applying the handbrake in a car while turning, it tightens the radius.

Obviously to apply this to the real world requires ultimate finesse, but from my experience it works both in cars and on bikes. If you're running wide, slowing the rear wheel(s) can tighten up your line. No?

[Baggsy]

Can't say I agree with this 100%... if you scrub speed off the rear tire the bike wants to pivot around a turn tighter. Same goes for gently applying the handbrake in a car while turning, it tightens the radius.

Obviously to apply this to the real world requires ultimate finesse, but from my experience it works both in cars and on bikes. If you're running wide, slowing the rear wheel(s) can tighten up your line. No?

His turn was tightening. You can see by the degree that he has the bike countersteered during the slide.

If he doesn't know not to chop the throttle does anyone think that he would know how to get back on the throttle gently enough to not go over the other way? It seems to me that knowing just how much and how fast to get back on the throttle to save it, is a more advanced skill than not chopping the throttle.

[mmmnaked]

I'm not talking about the video, I'm responding to the quoted text.

[reciprocity]

Can't say I agree with this 100%... if you scrub speed off the rear tire the bike wants to pivot around a turn tighter. Same goes for gently applying the handbrake in a car while turning, it tightens the radius.

Obviously to apply this to the real world requires ultimate finesse, but from my experience it works both in cars and on bikes. If you're running wide, slowing the rear wheel(s) can tighten up your line. No?

This is correct.

[Moreno636]

He rolled of the throttle..you can hear and see him do it.

[Sundie]

i don't think he rolled off the throttle until the slide was already happening - which only exacerbated it, of course.

Anyway. I think he pegged it. He's taking the corner too hot.

[mobius]

he was not even trying to hand of the side. you can see the reflection of his head on the tach.
his entire body is over the bike.
center of gravity was way off, not enough speed maybe. probably the result of a few things.
kinna just looks like he ran out of tire.