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Double Bimmers
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1,176 Posts
Discussion Starter #1
I went back to my accident scene and took some pictures. Please, be careful to never make the same mistake as I; the consequences for my error could have been much greater.


<img src="http://members.bellatlantic.net/~vze3673d/View01.jpg">
<img src="http://members.bellatlantic.net/~vze3673d/View02.jpg">
just getting around the corner. Nice long straight-away, let's speed up.
<img src="http://members.bellatlantic.net/~vze3673d/View03.jpg">
<img src="http://members.bellatlantic.net/~vze3673d/View03a.jpg">
<img src="http://members.bellatlantic.net/~vze3673d/View04.jpg">~vze3673d/View12.jpg">
 

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Double Bimmers
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Discussion Starter #2
<img src="http://members.bellatlantic.net/~vze3673d/View04a.jpg">
Looks like I can keep on going straight ahead...
<img src="http://members.bellatlantic.net/~vze3673d/View05.jpg">
NOW I SEE HAVE A BIG PROBLEM!!! Hit the brakes... oh no, I better try turning.
<img src="http://members.bellatlantic.net/~vze3673d/View06.jpg">
<img src="http://members.bellatlantic.net/~vze3673d/View06a.jpg">
<img src="http://members.bellatlantic.net/~vze3673d/View07.jpg">
<img src="http://members.bellatlantic.net/~vze3673d/View08.jpg">
<img src="http://members.bellatlantic.net/~vze3673d/View09.jpg">
OH NO!!! I AM GOING TO CRASH!!!
<img src="http://members.bellatlantic.net/~vze3673d/View10.jpg">
<img src="http://members.bellatlantic.net/~vze3673d/View11.jpg">
<img src="http://members.bellatlantic.net/~vze3673d/View12.jpg">
 

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I like cookies.
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dang, I can see how that could easily happen. how fast were you going when you saw the curb?

And, you're right, going straight would be the best option...I hope I would do that if I were ever in a similar situation.
 
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nate328Ci said:
dang, I can see how that could easily happen. how fast were you going when you saw the curb?

And, you're right, going straight would be the best option...I hope I would do that if I were ever in a similar situation.
It's kind of weird for me to see it spelled out like this too.

And, regardless of what Hunter says, we were probably still at 45-50 when we went over the curb into the tree. Just look at the damage to the tree and car.
 

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King of Rear Clunks
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I don't suppose one of those e-brake 180s you see in the movies woulda worked in this case...
 

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Kaz said:
I don't suppose one of those e-brake 180s you see in the movies woulda worked in this case...
Yea, you might have hit the tree going backwards :D

edit: and e-brake 180s are done while going in reverse...
 
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In case anyone didn't notice, you can see the skid mark trails heading off into the grass on many of the pics.
 

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TD said:
In case anyone didn't notice, you can see the skid mark trails heading off into the grass on many of the pics.
yes, I did.

And, if you said he was going 45-50 when you hit the curb, how fast do you think you were going when the curb was noticed? 80?

That's a lot of skid marks. Looks like the brakes were ABSing and ya'll were turning, but not very much.
 

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Double Bimmers
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Discussion Starter #10
nate328Ci said:
dang, I can see how that could easily happen. how fast were you going when you saw the curb?

And, you're right, going straight would be the best option...I hope I would do that if I were ever in a similar situation.
I don't have a good pic of it, but the curb is higher and the ditch in the median straight ahead is deeper. After reviewing the scene... I don't know what was best? The impact straight ahead would have also been very bad, plus by turning I had more pavement to use to slow down more.

I think at the curb I was going about 20 MPH. From the angle of the skid marks it looks like I was only a few MPH too fast for making it.
 
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TD said:
In case anyone didn't notice, you can see the skid mark trails heading off into the grass on many of the pics.
yeah, that's the first thing I noticed and wondered what in the heck the people that drive/park in that lot must have thought seeing those marks leading right into the tree!
 
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atyclb said:


yeah, that's the first thing I noticed and wondered what in the heck the people that drive/park in that lot must have thought seeing those marks leading right into the tree!
After crunching on all the bits of metal and plastic littering the area.... (It was a mess.)
 

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CD-55 said:


I don't have a good pic of it, but the curb is higher and the ditch in the median straight ahead is deeper. After reviewing the scene... I don't know what was best? The impact straight ahead would have also been very bad, plus by turning I had more pavement to use to slow down more.
Not true!

By attempting to turn and brake at the same time, you increase your stopping distance!

Was there no room to make a full turn w/o slowing down?
 

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Double Bimmers
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Discussion Starter #14
TD said:


It's kind of weird for me to see it spelled out like this too.

And, regardless of what Hunter says, we were probably still at 45-50 when we went over the curb into the tree. Just look at the damage to the tree and car.
No way, was I not in 2nd gear? I thought I was and I thought I was not at red-line, so I must not have been going 40+ at the curb after skiding all that ways! do you think?
 
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CD-55 said:


No way, was I not in 2nd gear? I thought I was and I thought I was not at red-line, so I must not have been going 40+ at the curb after skiding all that ways! do you think?
It was more than 20-25, that's for sure.

JST was up front. I'm curious as to his guess-timate.
 

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Whatever speed you guys were going when you hit, one thing that I've noticed is that passengers seem to think you're going 10-20MPH faster than you really are. I know I always do, and it seems like many of my passengers have, too. (One swore I was doing fifty when I took a turn at around 25-30MPH, admittedly with much squealing on my old contitourings.)
 

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Double Bimmers
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Discussion Starter #17
nate328Ci said:


Not true!

By attempting to turn and brake at the same time, you increase your stopping distance!

Was there no room to make a full turn w/o slowing down?
Yep the total distance will be greater, but I am unsure what is best way to clear an obstacle. By turning you don't need to come to a complete stop, you can go around. By swerving on the highway we have all avoided some things that it would have been impossible to stop for.

It is probably in some physics book somewhere… but I am just not sure what is the best way in my case.
 
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CD-55 said:


Yep the total distance will be greater, but I am unsure what is best way to clear an obstacle. By turning you don't need to come to a complete stop, you can go around. By swerving on the highway we have all avoided some things that it would have been impossible to stop for.

It is probably in some physics book somewhere… but I am just not sure what is the best way in my case.
Nate is referring to the limited grip of any set of tires. If you ask them to turn, then they can't brake as strongly and braking limits the tires ability to grip for a turn. So the theoretical question is, had you chosen to brake less, would the additional grip freed up for the tires have been enough to bring us around without hitting the curb.

I don't think so. Too much speed combined with too much turning necessary.
 

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Double Bimmers
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Discussion Starter #19
TD said:
snip...

I don't think so. Too much speed combined with too much turning necessary.
For this case is there any best route that would have made the impact speed slowest?
 
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CD-55 said:


For this case is there any best route that would have made the impact speed slowest?
Theoretically, you would have taken off the most speed going straight ahead with full braking. However, the angle you took also added a few extra feet of paved surface to stop on prior to going off. Does this offset the reduction in braking power from the turning grip used? I have no idea.
 
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