Click to go to Forum Home Click to go to maXbimmer Home

Go Back   maXbimmer Forums > Misc > Off-topic
User Name
Password


Welcome to Maxbimmer.com!

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

Reply
 
Thread Tools Rate Thread Display Modes
Old 09-24-2013, 05:37 PM   #16
jabela
5th Gear Member
 
Join Date: Apr 2007
Location: Toronto, ON, Canada
Posts: 909


Looks like it was a stuck throttle.... also here's the aftermath.




__________________

2002 E46 325ci // 5spd // ISC N1 Coilovers
www.modernapothecary.ca
jabela is online now   Reply With Quote
Old 09-24-2013, 08:45 PM   #17
canukgtp
2nd Gear Member
 
canukgtp's Avatar
 
Join Date: Sep 2011
Location: New-Brunswick
Posts: 111
crazy...at least they made it out ok
canukgtp is offline   Reply With Quote
Old 09-24-2013, 10:10 PM   #18
davericher20
black and blue
 
davericher20's Avatar
 
Join Date: Dec 2006
Location: 2 storey 3 bedroom 1 car garage
Posts: 3,608
Looks to me like driver error.
#armchairracing
__________________


Quote:
Originally Posted by JINT View Post
Some people have serious track experience from the cruise, so what is fast to you, isn't fast to them.
davericher20 is offline   Reply With Quote
Old 09-25-2013, 01:23 PM   #19
FermiParadox
2nd Gear Member
 
FermiParadox's Avatar
 
Join Date: Jul 2011
Location: North York
Posts: 230
Quote:
Originally Posted by jabela View Post
They're lucky they landed in the water. It was certainly softer than landing on solid ground upside down.
Due to the highly incompressible nature of water it's likely that that impact would be more catastrophic than hitting the ground...

Sent from my SGH-I747M using Tapatalk 2
FermiParadox is online now   Reply With Quote
Old 09-26-2013, 03:56 AM   #20
El Gato Liso
6th Gear Member
 
El Gato Liso's Avatar
 
Join Date: May 2007
Location: Brampton
Posts: 3,171
^ well it isnt that actually. It is simply the cohesion of hydrogen on the surface of water. Smack it...it hurts. Put ur hand thru it nice and easy, its soft.
__________________
R.I.P. E30
El Gato Liso is online now   Reply With Quote
Old 09-26-2013, 10:54 AM   #21
FermiParadox
2nd Gear Member
 
FermiParadox's Avatar
 
Join Date: Jul 2011
Location: North York
Posts: 230
Quote:
Originally Posted by El Gato Liso View Post
^ well it isnt that actually. It is simply the cohesion of hydrogen on the surface of water. Smack it...it hurts. Put ur hand thru it nice and easy, its soft.
It's exactly that actually. One can talk about cohesion of molecules which is the cause of surface tension but that has no bearing on the resistance of a substance, in this case water, to compression. You can put soap in that water to decrease the surface tension all you like but it won't help you with the incompressible nature of water when you hit it at high velocity. Water is viscoelastic meaning that its response to deformation is time (or velocity) dependant which amplifies the effects of impact when considering that it already has an extremely high bulk modulus of 2.2 GPa under static conditions.

QED
Sent from my SGH-I747M using Tapatalk 2
FermiParadox is online now   Reply With Quote
Old 09-26-2013, 11:03 AM   #22
slemmer
Driving in the fast lane
 
slemmer's Avatar
 
Join Date: Dec 2002
Location: Missed in 'sauga
Posts: 3,002
I knew I should have paid attention in Chemistry and Physics
__________________

'04 645cic
'05 GMC Sierra SLT Z71 CCSB 4x4
'00 740i Sport
slemmer is offline   Reply With Quote
Old 09-26-2013, 11:23 AM   #23
davericher20
black and blue
 
davericher20's Avatar
 
Join Date: Dec 2006
Location: 2 storey 3 bedroom 1 car garage
Posts: 3,608
Quote:
Originally Posted by FermiParadox View Post
It's exactly that actually. One can talk about cohesion of molecules which is the cause of surface tension but that has no bearing on the resistance of a substance, in this case water, to compression. You can put soap in that water to decrease the surface tension all you like but it won't help you with the incompressible nature of water when you hit it at high velocity. Water is viscoelastic meaning that its response to deformation is time (or velocity) dependant which amplifies the effects of impact when considering that it already has an extremely high bulk modulus of 2.2 GPa under static conditions.

QED
Sent from my SGH-I747M using Tapatalk 2
...
Attached Images
File Type: jpg image.jpg (86.5 KB, 75 views)
__________________


Quote:
Originally Posted by JINT View Post
Some people have serious track experience from the cruise, so what is fast to you, isn't fast to them.
davericher20 is offline   Reply With Quote
Old 09-26-2013, 01:05 PM   #24
325isdan
5th Gear Member
 
Join Date: Jun 2007
Location: GTA
Posts: 1,167
DaveRicher - exactly what I was thinking while reading that. lol
325isdan is online now   Reply With Quote
Old 09-27-2013, 12:04 PM   #25
EMPOWERD
Senior Moderator/Event-Coordinator
 
EMPOWERD's Avatar
 
Join Date: Dec 2001
Location: Mrs. Sauga
Posts: 10,176
Quote:
Originally Posted by Robb View Post
Porsches are too heavy for that kind of racing.
You need a nimble car or AWD.
Rob, haven't seen some keyboard-diarrhoea from you in a while.. nice of you to throw some out for a change. Verifies that you haven't learned a thing these past 12yrs.
__________________

My YouTube video
-- RANDY SPARRE --
EMPOWERD is offline   Reply With Quote
Old 09-27-2013, 12:57 PM   #26
jabela
5th Gear Member
 
Join Date: Apr 2007
Location: Toronto, ON, Canada
Posts: 909
Quote:
Originally Posted by FermiParadox View Post
Due to the highly incompressible nature of water it's likely that that impact would be more catastrophic than hitting the ground...

Sent from my SGH-I747M using Tapatalk 2
How would it be more catastrophic to hit water? (other than possibly drowning)
Solid ground isn't more compressible. The water will more easily be flow out of the way, resulting in lower peak deceleration rates.

That's why these shallow pool high divers aren't dead.


__________________

2002 E46 325ci // 5spd // ISC N1 Coilovers
www.modernapothecary.ca
jabela is online now   Reply With Quote
Old 09-27-2013, 01:38 PM   #27
SickFinga
Moderator
 
SickFinga's Avatar
 
Join Date: Jan 2002
Location: Location:
Posts: 16,688
Quote:
Originally Posted by FermiParadox View Post
Due to the highly incompressible nature of water it's likely that that impact would be more catastrophic than hitting the ground...

Sent from my SGH-I747M using Tapatalk 2
That would be true if there was place for water to escape. In this case, water definitely cushioned the impact.
SickFinga is offline   Reply With Quote
Old 09-27-2013, 06:59 PM   #28
FermiParadox
2nd Gear Member
 
FermiParadox's Avatar
 
Join Date: Jul 2011
Location: North York
Posts: 230
Quote:
Originally Posted by jabela View Post
How would it be more catastrophic to hit water? (other than possibly drowning)
Solid ground isn't more compressible. The water will more easily be flow out of the way, resulting in lower peak deceleration rates.

That's why these shallow pool high divers aren't dead.


I don't want to be rude but if you knew anything about physics you'd know that you just proved my point for me with that video as it demonstrates the incompressibility of water.
FermiParadox is online now   Reply With Quote
Old 09-27-2013, 07:11 PM   #29
FermiParadox
2nd Gear Member
 
FermiParadox's Avatar
 
Join Date: Jul 2011
Location: North York
Posts: 230
Quote:
Originally Posted by SickFinga View Post
That would be true if there was place for water to escape. In this case, water definitely cushioned the impact.
Again, the damage associated with landing on concrete would be measured in terms of a single impact which is not true when impacting water. As the car hits the water it will encounter a very large number of impacts as it shears the water out of its path. The result will be large shear, or drag gradient which will result in chassis deformation as is visible in the post-crash photos.
FermiParadox is online now   Reply With Quote
Old 09-27-2013, 07:27 PM   #30
jabela
5th Gear Member
 
Join Date: Apr 2007
Location: Toronto, ON, Canada
Posts: 909
Quote:
Originally Posted by FermiParadox View Post
I don't want to be rude but if you knew anything about physics you'd know that you just proved my point for me with that video as it demonstrates the incompressibility of water.
I wasn't disagreeing with the incompressibility of water. I was asking why you think hitting the ground would be worse.

And yes, have studied physics.
__________________

2002 E46 325ci // 5spd // ISC N1 Coilovers
www.modernapothecary.ca
jabela is online now   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -4. The time now is 02:09 AM.


Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Maxbimmer Copyright 2001 - 2015