Team-BHP > Road Safety
Register New Topics New Posts Top Thanked Team-BHP FAQ


Reply
  Search this Thread
960,027 views
Old 8th June 2010, 16:37   #181
Senior - BHPian
 
bottle's Avatar
 
Join Date: Sep 2006
Location: Chennai
Posts: 1,634
Thanked: 274 Times

Quote:
Originally Posted by speedsatya View Post
I remember having a scary incident in a 1995 zen in the last month on the wet Nh48 .This car had brand new 145/70r13 tires and I was doing about 50-60 kph at 3 am in the night ,about 40 kms from Mangalore when before I could realise the car just refused to take the curve and headed straight to the gorge on the other side.I was very lucky that I was driving slower than my zen or the lancer (both have the potenza GIII) and that there was no oncoming traffic .

The car must have hit some oil patch on the curve .I was lucky that I was somehow able to control the skid .Parked the car and then walked back to this spot...and couldnt make out anything ..and when I was walking back to the car ..heard a loud bang ..an Accent did a 180 turn and its rear end hit the mountain side!!!

I think both of us ( the accent driver and me ) must have tapped the brakes on the turn .
I never brake in the middle of a turn ..its always gear changes for me ...dunno this time how I did this.

.
Faced something similar recently when I braked and there was some standing water at that spot (straight road) and car aquaplaned and went sliding sideways across the road. It was at a pretty low speed around 60

This was on GQ so I m guessing the fresh rains had made the surface a bit slick

Last edited by bottle : 8th June 2010 at 16:38.
bottle is offline  
Old 8th June 2010, 20:34   #182
Distinguished - BHPian
 
Thad E Ginathom's Avatar
 
Join Date: Jun 2007
Location: Chennai
Posts: 11,002
Thanked: 26,425 Times

Quote:
Originally Posted by bottle View Post
Faced something similar recently when I braked and there was some standing water at that spot (straight road) and car aquaplaned and went sliding sideways across the road. It was at a pretty low speed around 60

This was on GQ so I m guessing the fresh rains had made the surface a bit slick
You probably skidded, rather than aquaplaned. the difference is a little academic, perhaps, but it is different.

The reason I say skidded is because you say braked.

For aquaplaning, you do not need to brake, or even do anything, but suddenly, you find that anything you do do has (steering, brake) has no effect until the car slows and finds the road surface again.

(of course... I admit I wasn't there, and my comments are based entirely on my reading of your post!)
Thad E Ginathom is online now  
Old 8th June 2010, 21:17   #183
Senior - BHPian
 
bottle's Avatar
 
Join Date: Sep 2006
Location: Chennai
Posts: 1,634
Thanked: 274 Times

i guess it was a bit of both, it was a mild dab of brakes but wheels locked up completely. my guess is that due to loss of road contact this happened? after that car went sliding left across 2 lanes. felt like i was skating on ice.

it was raining really badly after that i could feel the right tyre aquaplaning when it hit the water puddles stagnating by the side of the road
bottle is offline  
Old 8th June 2010, 21:48   #184
BHPian
 
Join Date: May 2007
Location: Goa
Posts: 33
Thanked: 3 Times

Suggestions on my part:

This phenomenon occurs in cars and particularly bikes equipped with drum brakes.

Brake liners tend to expand, resulting in sharper braking response, but only initially i.e when they haven't warmed up to optimum temperature.

This can result in a hazardous situation especially when just beginning an early morning ride, or when just beginning your ride as the brakes haven't properly warmed up on a slippery stretch of road.

So at the start of your ride, i suggest you pump your brakes to get them working at optimum temperature.

Cheers and Happy Monsoons
ashwinsaval is offline  
Old 8th June 2010, 21:54   #185
BHPian
 
Join Date: May 2007
Location: Goa
Posts: 33
Thanked: 3 Times

in my opinion, if i am correct. the issue could have something to do with brand new tires.

brand new tires, as per my understanding, need to run in for some time to be at optimum grip levels.

also, for tires to be at optimum grip levels, they have to be working at the right temperature, but i dont think that could be the issue, since road going tires are designed to warm up to temperature pretty quickly.

i may be wrong, members can feel free to correct me if that is so.

cheers
Ashwin
ashwinsaval is offline  
Old 9th June 2010, 00:40   #186
Distinguished - BHPian
 
Thad E Ginathom's Avatar
 
Join Date: Jun 2007
Location: Chennai
Posts: 11,002
Thanked: 26,425 Times

skidding... aquaplaning... there is one sure way to avoid both: drive slowly!

Thad E Ginathom is online now  
Old 9th June 2010, 17:01   #187
BHPian
 
ajman28's Avatar
 
Join Date: May 2010
Location: Chennai
Posts: 281
Thanked: 24 Times

Quote:
Originally Posted by Akki_5 View Post
EDIT: A question that popped in my mind the other day: How do you slip the clutch on an AT vehicle? We can't keep revs high with slow speed in an AT vehicle.
A suggestion for vehicles with AT will be to apply the accelerator along with slight application of the brakes. In this manner you will have to rev the vehicle higher in order to move forward; thus keeping the water from entering the exhaust pipes.

This method of course would eat up your brakes so as far as possible stay away from those flooded areas.
ajman28 is offline  
Old 9th June 2010, 20:21   #188
Senior - BHPian
 
arjunrudra's Avatar
 
Join Date: Jul 2008
Location: Gurgaon/Chennai
Posts: 1,577
Thanked: 197 Times

Can someone please explain the tobacco bit in detail ? The procedure and when it should be used ?
arjunrudra is offline  
Old 9th June 2010, 22:03   #189
BHPian
 
Join Date: Nov 2006
Location: mumbai
Posts: 103
Thanked: 25 Times

Is it true that during rains one should reduce tyre pressure so as to increase the tyre patch on the road & better grip? But won't a larger tyre patch aquaplane on water puddles?
fastraj is offline  
Old 9th June 2010, 23:31   #190
Distinguished - BHPian
 
Thad E Ginathom's Avatar
 
Join Date: Jun 2007
Location: Chennai
Posts: 11,002
Thanked: 26,425 Times

I think the right tyre pressure is the right tyre pressure --- and the only instance I have ever heard in which it is clever to reduce it is when stuck in sand!

You do not aquaplane on puddles --- you aquaplane when there is a solid sheet of water in the road and your speed is sufficient.

On the other hand you can skid on any wet slippery surface so --- drive slowly!
Thad E Ginathom is online now  
Old 10th June 2010, 09:53   #191
Senior - BHPian
 
Join Date: Dec 2007
Location: Bangalore
Posts: 4,106
Thanked: 537 Times

Quote:
Originally Posted by arjunrudra View Post
Can someone please explain the tobacco bit in detail ? The procedure and when it should be used ?
Take the tobacco flakes and rub them over the windshield, with a sprinkle of water; just enough water to wet up the flakes. Rub well.
HappyWheels is offline  
Old 10th June 2010, 10:47   #192
BHPian
 
Join Date: Dec 2008
Location: Mumbai
Posts: 157
Thanked: 61 Times
Tackling the Bandra Worli Seal Link Speed Arresters

Mods Please feel free to move this post to the appropriate thread as I could not find the right one.

Hi,
The reason for this thread to be mentioned here is pretty simple, a friend of mine recently discovered that is swift front suspension arm had developed a crack and had to be sent for some expensive repairs. The culprit it seems is the speed breaks on the sea link.
Now as a daily user of the sea link i find this an extremely worrying aspect as the daily wear and tear of the speed breakers are bound to take a toll on our respective vehicles.
While the speed limit on the sea link might be 50 Kmph, approaching the speed breakers on this speed is a real back breaker. So the other approach (not the legal one though) but seems to work is to approach the speed breakers at speeds greater than 70 kmph.

So here's my question - What is the ideal approach to tackle these speed breakers and how to minimize the damage done so far if any?
siddharthdeb is offline  
Old 10th June 2010, 11:39   #193
BHPian
 
babaops's Avatar
 
Join Date: Sep 2009
Location: Bangalore
Posts: 61
Thanked: 2 Times

Quote:
Originally Posted by HappyWheels View Post
Take the tobacco flakes and rub them over the windshield, with a sprinkle of water; just enough water to wet up the flakes. Rub well.
I have seen a lot of people using tobacco but any idea of how does tobacco help? What properties of it make sure that it helps during rain?
babaops is offline  
Old 10th June 2010, 16:39   #194
BHPian
 
Join Date: Sep 2009
Location: Gurgaon
Posts: 48
Thanked: 0 Times
Wipers

Two years back i had changed the wipers of my ZEN with some local things. They didn't work to the satifaction. yesterday with one of the first few showers at navi mumbai decided to get them changed. Went to a shop and was surprised that he was having BOSH wipers. A pair costed 270 bucks but the their effect was amazing.
dkcrpl is offline  
Old 10th June 2010, 17:42   #195
BHPian
 
Join Date: Feb 2009
Location: Noida
Posts: 154
Thanked: 39 Times

Quote:
Originally Posted by dkcrpl View Post
Two years back i had changed the wipers of my ZEN with some local things. They didn't work to the---.
Do these Bosh wipers doesn't leave the fog behind on windscreen. I often face this problem of very thin film of fog on outside the windscreen after a wipe from wipers. Any pointers?
sparkguy is offline  
Reply

Most Viewed


Copyright ©2000 - 2024, Team-BHP.com
Proudly powered by E2E Networks