Go Back   Team-BHP > Buckle Up > Street Experiences


Reply
 
Thread Tools Search this Thread
Old 27th February 2009, 19:00   #16
Team-BHP Support
 
tsk1979's Avatar
 
Join Date: Feb 2005
Location: New Delhi
Posts: 22,852
Thanked: 15,406 Times
Default

Mostly I had found "stock" fog lamps mounted on bumper aimed low, and blind much less than normal headlights. I think OP is talking about aux lights.

anyways about fuel argument. An engine produces around 50KW(70BHP)
Thats 50,000W
A pair of fog lamps consumes 120W
so lets say due to wastage etc., its actually 200W extra load on engine which means 0.4%
So if your car gives 10kmpl now it will give 9.996 that means for every liter of fuel it will go 4 meters less.
However if extra lights prevent even one braking incident, it will mean atleast 20 meters more
tsk1979 is offline   Reply With Quote
Old 27th February 2009, 19:04   #17
Senior - BHPian
 
gd1418's Avatar
 
Join Date: May 2006
Location: Gurgaon
Posts: 3,578
Thanked: 651 Times
Default

Company fitted fog lamps or auxillary lights as some call are prefocussed to illuminate downwards. It is only when after market fitting is done, I've seen people asking for an upwards focus. Now these certainly would be blinding.

Most of the fog/auxillary lights are white in colour. it is only the after market ones that come in yellow colour.

Fog lamps without fog-bull.jpg
gd1418 is offline   Reply With Quote
Old 27th February 2009, 19:13   #18
Senior - BHPian
 
akshay4587's Avatar
 
Join Date: Mar 2005
Location: Chandigarh/Mohali/Ambala Cantt
Posts: 3,759
Thanked: 1,534 Times
Default

i have fog lights in my accents bumper and they are connected to parking lamps,so i have them switched on most of the times,but they are proper fog lights in the bumper and are aimed directly towards the road and they just dont cause any glare.

@guruji what do you do with so many lights
akshay4587 is offline   Reply With Quote
Old 28th February 2009, 03:12   #19
Senior - BHPian
 
abhibh's Avatar
 
Join Date: Sep 2005
Location: Back in the HOOD near you!
Posts: 2,767
Thanked: 33 Times
Default

gd1418 Any chance you were in Chandigarh recently ? I think I have seen your car in Chandigarh just recently sometime back.
abhibh is offline   Reply With Quote
Old 28th February 2009, 08:46   #20
BHPian
 
arsudarsan's Avatar
 
Join Date: Nov 2008
Location: Chennai
Posts: 91
Thanked: 13 Times
Default

Many folks think that driving with fog lamps on give their car more style. They don't know the main use of it. I have seen people drive with fog lamps & hi beam on well lit roads.
arsudarsan is offline   Reply With Quote
Old 28th February 2009, 09:02   #21
Senior - BHPian
 
Join Date: Sep 2007
Location: New Delhi
Posts: 3,079
Thanked: 251 Times
Default

Quote:
Originally Posted by tsk1979 View Post
anyways about fuel argument. An engine produces around 50KW(70BHP)
Thats 50,000W
A pair of fog lamps consumes 120W
so lets say due to wastage etc., its actually 200W extra load on engine which means 0.4%
So if your car gives 10kmpl now it will give 9.996 that means for every liter of fuel it will go 4 meters less.
However if extra lights prevent even one braking incident, it will mean atleast 20 meters more
This calculation is highly flawed in making the assumption that the engine is actually being run at FULL power ALL the time!
Typically in city it would average 20% or so and on moderate highway driving at constant speed it might be at about 40% of rated power.
The lights will consume the same 200 watts always.
All figures would need to be amended accordingly. The 0.4% could easily become 2% in a real life situation.
Still very low, LOL!
anupmathur is offline   Reply With Quote
Old 28th February 2009, 09:19   #22
Senior - BHPian
 
headers's Avatar
 
Join Date: May 2006
Location: Greater Chennai
Posts: 4,548
Thanked: 424 Times
Default

Quote:
Originally Posted by akshay4587 View Post
i have fog lights in my accents bumper and they are connected to parking lamps,so i have them switched on most of the times,but they are proper fog lights in the bumper and are aimed directly towards the road and they just dont cause any glare.
Hi, the fog lamps in accent are NOT connected to the parking lamps, but come ON if you switch ON the parking lamps AND FOG lamps..


Quote:
Originally Posted by akshay4587 View Post
@guruji what do you do with so many lights
Guruji lights up the world with his lights
headers is offline   Reply With Quote
Old 28th February 2009, 09:27   #23
Senior - BHPian
 
gd1418's Avatar
 
Join Date: May 2006
Location: Gurgaon
Posts: 3,578
Thanked: 651 Times
Default

Your answer lies here - http://www.team-bhp.com/forum/modifi...inders-10.html (Revenge on full beam blinders)

Quote:
Originally Posted by akshay4587 View Post
@guruji what do you do with so many lights
Your question is answered here - http://www.team-bhp.com/forum/travel...h-gurgaon.html (Gurgaon - Chandigarh - Gurgaon)

Quote:
Originally Posted by abhibh View Post
gd1418 Any chance you were in Chandigarh recently ? I think I have seen your car in Chandigarh just recently sometime back.
Thanks headers...
Quote:
Originally Posted by headers View Post
Guruji lights up the world with his lights
gd1418 is offline   Reply With Quote
Old 28th February 2009, 09:47   #24
BHPian
 
Join Date: Feb 2008
Location: Mumbai, Scottsdale, AZ
Posts: 142
Thanked: Once
Default

I use fog-lights at night in the city, on the streets of bombay, headlights are not needed at all, unless there is a power outage or something, The only reason for using them is they light up potholes and road aberrations much much better than the regular headlamps, so even though with all my previous cars, I never used anything besides the regular parking lights, with the Fabia I use the fog lamps only for the poor roads, I don't really think they get into oncoming driver's eyes, because they are really low, and when they're on and you sit down in front of the car they are not irritating even then.

The worst thing is high-beam used even on properly lit roads, my solution, if that person doesn't switch to low beam when you blink, keep going on and off, that is far worse than keeping high-beam on continously, and you can target just one car for driving like that.
naikpranav is offline   Reply With Quote
Old 28th February 2009, 09:51   #25
Senior - BHPian
 
akshay4587's Avatar
 
Join Date: Mar 2005
Location: Chandigarh/Mohali/Ambala Cantt
Posts: 3,759
Thanked: 1,534 Times
Default

Quote:
Originally Posted by headers View Post
Hi, the fog lamps in accent are NOT connected to the parking lamps, but come ON if you switch ON the parking lamps AND FOG lamps..
I removed the switch after it was broken by a moron in front passenger seat
akshay4587 is offline   Reply With Quote
Old 28th February 2009, 11:55   #26
BHPian
 
WasavaTyres's Avatar
 
Join Date: Aug 2006
Location: Indore
Posts: 721
Thanked: 222 Times
Wink

Quote:
Originally Posted by dushmish View Post
Class 6 physics - energy can not be created, it just changes form. So for every unit of fuel burnt there is a certain amount of energy produced as heat. This heat energy is used to push the piston and then the crank chaft and ultimately the wheel. There is a lot of energy loss that happens in the process. All the sound generated is a loss, all the heat that escapes is a loss. The heat energy which has been converted to kinetic energy is used to run an alternator or dynamo to generate current for running the electricals on the car. The more electricals you run, wipers, lights, more lights, ICE, etc. the more energy is consumed. Total energy produced per unit fuel is fixed. If you divert the energy to run systems other than wheels, your car will run for lesser kilometres. Meaning lesser fuel economy.
Dushmish I don't know on what logic you've based your conviction on regarding the fuel efficiency claim. I'm no scientist but I do know that an alternator does not power the electricals of the car,it merely produces electric current to charge the storage battery of the car. You can check this by switching on the lights of your car when it's stationary and no " The heat energy which has been converted to kinetic energy is used to run an alternator or dynamo to generate current for running the electricals on the car" is happening.

Coming to the thread topic itself, It may visually annoy you to see 4 headlamps switched on driving in your direction,but the fact is that all fog lamps ( the ones that are OE fitment and like some members have mention,auxillary lights) are 35W rated hence lesser light output and do not produce a focussed beam like the headlamps in a straight direction but are more dispersed towards the sides of the road on a lower angle.
WasavaTyres is offline   Reply With Quote
Old 28th February 2009, 12:03   #27
BHPian
 
Sowmya's Avatar
 
Join Date: May 2007
Location: Bangalore
Posts: 495
Thanked: 16 Times
Default

Fog lamp really help in driving High way @ dark night. You can focus you Head light to High Beam and switch on the Fog lamp. It will help us for clear visibilty at night and help us to find the pothole and sudden divider in the HW.
But at the same time we should always switch off the fog light at City. It really irritated oncoming vehicle. Now people have started putting HID on fog lamp too...
Sowmya is offline   Reply With Quote
Old 28th February 2009, 13:01   #28
BHPian
 
BenjiRoss's Avatar
 
Join Date: Jul 2008
Location: Tamilnadu
Posts: 563
Thanked: 74 Times
Default

I find that fog lamps illuminate the nearest part of the road better and I can see potholes and even the median/divider much better on darker roads inside the city.
I switch it on in darker roads when near visibility is an issue. I have company fitted fog lamps and find they dont really hurt the eyes (unless you're lying on the road directly in front of the car).
Fog lamps also help in very dusty roads or in dusty conditions inside the city.
I dont really like those extra lamps fitted all over the cars in the city - but these are quite useful in dark barren roads.
BenjiRoss is offline   Reply With Quote
Old 28th February 2009, 13:29   #29
Senior - BHPian
 
Join Date: Sep 2007
Location: New Delhi
Posts: 3,079
Thanked: 251 Times
Default

Quote:
Originally Posted by WasavaTyres View Post
Dushmish I'm no scientist but I do know that an alternator does not power the electricals of the car,it merely produces electric current to charge the storage battery of the car.
WasavaTyres, surprise, surprise, you're quite wrong about this!
The alternator DOES power the electricals of the car!
When the engine is off, the battery powers them.


Please take a look at this detailed thread:
http://www.team-bhp.com/forum/techni...connected.html (Alternator Dependency: Will a vehicle run with the battery disconnected?)
anupmathur is offline   Reply With Quote
Old 28th February 2009, 13:46   #30
Distinguished - BHPian
 
SS-Traveller's Avatar
 
Join Date: Jan 2009
Location: New Delhi
Posts: 6,564
Thanked: 10,477 Times
Default

Quote:
Originally Posted by WasavaTyres View Post
It may visually annoy you to see 4 headlamps switched on driving in your direction,but the fact is that all fog lamps ( the ones that are OE fitment and like some members have mention,auxillary lights) are 35W rated hence lesser light output and do not produce a focussed beam like the headlamps in a straight direction but are more dispersed towards the sides of the road on a lower angle.
That is the whole point, WasavaTyres. The annoyance is what is best avoided on the road. OE fitment fog lamps as well as auxiliary driving lamps are a strict no-no, especially in city driving. Please don't visually annoy others, and don't get visually annoyed yourself.

Fog lamps are for driving in fog. Auxiliary driving lamps are for driving along unmarked, undivided twisting roads or for off-road use such as in rallies etc. Please switch them off otherwise.
SS-Traveller is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
How do you dispose of CFL lamps & Fluorescent lamps? Klub Class Shifting gears 13 19th April 2017 16:57
Projector Lamps(Low Beam) as Fog Lamps for Ritz LDI alexpaul Modifications & Accessories 17 13th September 2012 20:23
Wanted - Matiz Fog Lamps (Clear Full Lamp - Without Bezel) zzzehar Shifting gears 3 7th March 2012 15:47
Wanted :Fog lamps for new Lancer Lxd Maneesh Modifications & Accessories 0 6th May 2006 16:21
Zen MGA fog lamps fit WagonR ? prateekkaul Modifications & Accessories 2 9th January 2006 16:55


All times are GMT +5.5. The time now is 08:32.

Copyright 2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks