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s1000rr lowside, did his guy turn off traction control?
- Thread starter SkyRider
- Start date
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
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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...
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.
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.
Bahahahahaha.Love it!Ya that's gotta hurt. Hey Donovan... how does it feel like to crash... ah never mind.
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
This makes no difference whatsoever when the rider has already closed the throttle and sent himself to the moon.
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
Member
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?
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.
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.
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