Serious lack of talent in an M4
Discussion
Posted this in the youtube thread but if you haven't seen it, this bloke has a major fail in a BMW M4, just how?
http://youtu.be/T3d0FUlZmBk
http://youtu.be/T3d0FUlZmBk
Evolved said:
Tried to catch the slide with no power to help out as he panicked and lifted off.
Did you see the rigidity of the chassis though, lifted the front left with the turn!
No.Did you see the rigidity of the chassis though, lifted the front left with the turn!
There was absolutely no attempt to 'catch the slide' or even any understanding that a slide was occurring.
When the car was perpendicular to the soon to be mounted pavement, the wheels that could have been used to deal with the lateral movement of the car due to the camber of the road (as alluded to by Wills2) were still pointing amidships. Hence the pilot hadn't AFC what s/he'd just induced.
As with Wills2, in my old e92 M3, I found with brutal DCT upshifts on cambered roads, the sudden torque bump (for want of a better term) could result in seriously crossed hands not to mention crossed words...
In this instance, it would appear that an unfortunate novice got a first lesson in power oversteer.
Reminds me of the Ferrari California test drive which ended not unsimilarly...
https://www.youtube.com/watch?v=dFvjCpE9FPE
Evolved said:
Tried to catch the slide with no power to help out as he panicked and lifted off.
Did you see the rigidity of the chassis though, lifted the front left with the turn!
No.Did you see the rigidity of the chassis though, lifted the front left with the turn!
There was absolutely no attempt to 'catch the slide' or even any understanding that a slide was occurring.
When the car was perpendicular to the soon to be mounted pavement, the wheels that could have been used to deal with the lateral movement of the car due to the camber of the road (as alluded to by Wills2) were still pointing amidships. Hence the pilot hadn't AFC what s/he'd just induced.
As with Wills2, in my old e92 M3, I found with brutal DCT upshifts on cambered roads, the sudden torque bump (for want of a better term) could result in seriously crossed hands not to mention crossed words...
In this instance, it would appear that an unfortunate novice got a first lesson in power oversteer.
Reminds me of the Ferrari California test drive which ended not unsimilarly...
https://www.youtube.com/watch?v=dFvjCpE9FPE
t driver.ellipsis said:
I found with brutal DCT upshifts on cambered roads, the sudden torque bump (for want of a better term) could result in seriously crossed hands not to mention crossed words...
Didn't look like much of a camber... .That plus torque thump that low down in an M3 caused that you say? Righto.
goldblum said:
Didn't look like much of a camber... .
That plus torque thump that low down in an M3 caused that you say? Righto.
Here we go...That plus torque thump that low down in an M3 caused that you say? Righto.
What made the car rotate with the wheels pointing straight ahead?
The torque thump statement was a separate reference which I think (later to be cited..) Wills might confirm..
Nothing to do with this incident okay...? The camber of the road on the other hand obviously was, unless you think cars just spontaneously turn through 90 degrees under power with no steering lock for no reason. Righto indeed.
goldblum said:
Didn't look like much of a camber... .
That plus torque thump that low down in an M3 caused that you say? Righto.
Here we go...That plus torque thump that low down in an M3 caused that you say? Righto.
What made the car rotate with the wheels pointing straight ahead?
The torque thump statement was a separate reference which I think (later to be cited..) Wills might confirm..
Nothing to do with this incident okay...? The camber of the road on the other hand obviously was, unless you think cars just spontaneously turn through 90 degrees under power with no steering lock for no reason. Righto indeed.
Evolved said:
Tried to catch the slide with no power to help out as he panicked and lifted off.
Did you see the rigidity of the chassis though, lifted the front left with the turn!
1) Didn't try to catch the slide at allDid you see the rigidity of the chassis though, lifted the front left with the turn!
2) I didn't see it lifting a wheel due to chassis stiffness - what time-stamp are you looking at on the video? If you're talking about the moment just after he's landed and turns right toward the entrance, what you're seeing there is heat-haze off the hot tarmac which makes it look like the wheel isn't touching the ground.
ellipsis said:
What made the car rotate with the wheels pointing straight ahead?
Poor driving + fast car. But it's interesting that because you and someone else have similar opinions re: camber and 'torque bump' (in an M3!) you think that must have been the cause. Nothing wrong with a bit of generalisation eh? 
. I'll have to Google "M3 dangerous camber reaction under acceleration" sometime. I know what I'll find.
Urban Sports said:
Posted this in the youtube thread but if you haven't seen it, this bloke has a major fail in a BMW M4, just how?
http://youtu.be/T3d0FUlZmBk
My iPad (and iPhone) say the video is private http://youtu.be/T3d0FUlZmBk
HoHoHo said:
Urban Sports said:
Posted this in the youtube thread but if you haven't seen it, this bloke has a major fail in a BMW M4, just how?
http://youtu.be/T3d0FUlZmBk
My iPad (and iPhone) say the video is private http://youtu.be/T3d0FUlZmBk
BMW M4 Crash @ CARS & COFFEE Blackhawk 2015: http://youtu.be/miA5qj5ergM
ellipsis said:
As with Wills2, in my old e92 M3, I found with brutal DCT upshifts on cambered roads, the sudden torque bump (for want of a better term) could result in seriously crossed hands not to mention crossed words...
Right Jeff, let me help you...The torque bump reference was purely in relation to the gear change in my old e92 DCT M3. No-one else said this.
The point being, to me this would often highlight the camber of a given road because despite the road being straight, the car would start to yaw in the direction of the kerb. Not massively but enough to demonstrate that when the driven wheels are over-rotating (you might call this wheel spin) and therefore when lateral as well as forward grip are reduced, our old friend gravity, will do its stuff. ie the rear of the car - where the driven wheels are! - begins to slip towards the lower ground...
In this particular instance there is clearly camber on the road and when the driven wheels spun and lateral adhesion was lost, the car began to yaw. The driver then lifted off, transferring weight from the rear wheels, further exacerbating their lack of lateral grip and further contributing to the rotation of the car.
If it helps, I do agree it was a lack of driver skill. But ignoring the fact that something had to contribute to the car's rotation without driver input (that'll be the steering wheel) suggests you don't really understand the mechanics at work here.
Good luck with you're Google search though.
Funk said:
HoHoHo said:
Urban Sports said:
Posted this in the youtube thread but if you haven't seen it, this bloke has a major fail in a BMW M4, just how?
http://youtu.be/T3d0FUlZmBk
My iPad (and iPhone) say the video is private http://youtu.be/T3d0FUlZmBk
BMW M4 Crash @ CARS & COFFEE Blackhawk 2015: http://youtu.be/miA5qj5ergM
By chance I'd googled and found the same video but I wasn't sure if we were talking about the same car.
Whatever the reason I wonder how much damage was caused by the kerb and subsequent bounce?
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